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blabla/PATSTAT/CPCSchemeXML202302/cpc-scheme-F04C.xml

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<?xml version="1.0" encoding="UTF-8"?>
<class-scheme publication-date="2023-02-01" scheme-type="cpc" publication-type="official">
<classification-item breakdown-code="false" not-allocatable="true" level="5" additional-only="false" sort-key="F04C" definition-exists="true" date-revised="2018-08-01" status="published"><classification-symbol>F04C</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS </text><reference><text>engines <class-ref scheme="cpc">F03C</class-ref></text></reference></title-part><title-part><text>ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS</text></title-part></class-title><notes-and-warnings date-revised="2013-01-01"><note type="note"><note-paragraph>Attention is drawn to the notes preceding class <class-ref scheme="cpc">F01</class-ref> especially as regards the definitions of &quot;machines&quot;, &quot;pumps&quot;, &quot;positive displacement&quot;, &quot;rotary-piston machines&quot;, &quot;oscillating-piston machines&quot;, &quot;rotary piston&quot;, &quot;co-operating members&quot;, &quot;movement of co-operating members&quot;, &quot;teeth or tooth-equivalents&quot; and &quot;internal axis&quot;.</note-paragraph></note><note type="warning"><note-paragraph>In this subclass non-limiting references (in the sense of paragraph 39 of the Guide to the IPC) may still be displayed in the scheme.</note-paragraph></note></notes-and-warnings>
<classification-item breakdown-code="false" not-allocatable="true" level="6" additional-only="false" sort-key="F04C2/00" date-revised="2013-01-01" status="published"><classification-symbol>F04C2/00</classification-symbol>
<classification-item breakdown-code="false" not-allocatable="false" level="7" additional-only="false" sort-key="F04C2/00" definition-exists="true" ipc-concordant="F04C2/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2016-05-01" status="published"><classification-symbol>F04C2/00</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Rotary-piston machines or pumps </text><reference><text>with non-parallel axes of co-operating members <class-ref scheme="cpc">F04C3/00</class-ref>; with the working-chamber walls at least partly resiliently deformable <class-ref scheme="cpc">F04C5/00</class-ref>; with fluid ring or the like <class-ref scheme="cpc">F04C7/00</class-ref>; rotary-piston pumps specially adapted for elastic fluids <class-ref scheme="cpc">F04C18/00</class-ref>; rotary-piston machines or pumps in which the working-fluid is exclusively displaced by, or exclusively displaces, one or more reciprocating pistons <class-ref scheme="cpc">F04B</class-ref></text></reference></title-part></class-title><notes-and-warnings date-revised="2013-01-01"><note type="note"><note-paragraph>Group <class-ref scheme="cpc">F04C2/30</class-ref> takes precedence over groups <class-ref scheme="cpc">F04C2/02</class-ref>&#160;-&#160;<class-ref scheme="cpc">F04C2/28</class-ref></note-paragraph></note></notes-and-warnings>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F04C2/02" definition-exists="false" ipc-concordant="F04C2/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2/02</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F04C2/025" definition-exists="false" ipc-concordant="F04C2/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2/025</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>the moving and the stationary member having co-operating elements in spiral form</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F04C2/04" definition-exists="false" ipc-concordant="F04C2/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2/04</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>of internal axis type</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="F04C2/045" definition-exists="false" ipc-concordant="F04C2/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2/045</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>having a C-shaped piston</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F04C2/06" definition-exists="false" ipc-concordant="F04C2/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2014-02-04" status="published"><classification-symbol>F04C2/06</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>of other than internal-axis type </text><reference><text><class-ref scheme="cpc">F04C2/063</class-ref> takes precedence</text></reference></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F04C2/063" definition-exists="false" ipc-concordant="F04C2/063" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2014-02-04" status="published"><classification-symbol>F04C2/063</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>with coaxially-mounted members having continuously-changing circumferential spacing between them</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="F04C2/067" definition-exists="false" ipc-concordant="F04C2/067" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2014-02-04" status="published"><classification-symbol>F04C2/067</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>having cam-and-follower type drive</text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="F04C2/07" definition-exists="false" ipc-concordant="F04C2/07" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2014-02-04" status="published"><classification-symbol>F04C2/07</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>having crankshaft-and-connecting-rod type drive</text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="F04C2/073" definition-exists="false" ipc-concordant="F04C2/073" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2014-02-04" status="published"><classification-symbol>F04C2/073</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>having pawl-and-ratchet type drive</text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="F04C2/077" definition-exists="false" ipc-concordant="F04C2/077" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2014-02-04" status="published"><classification-symbol>F04C2/077</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>having toothed-gearing type drive</text></title-part></class-title></classification-item></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F04C2/08" definition-exists="true" ipc-concordant="F04C2/08" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2/08</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F04C2/082" definition-exists="false" ipc-concordant="F04C2/08" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2/082</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Details specially related to intermeshing engagement type machines or pumps</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="F04C2/084" definition-exists="false" ipc-concordant="F04C2/08" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2/084</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Toothed wheels</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="F04C2/086" definition-exists="true" ipc-concordant="F04C2/08" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2/086</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Carter</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="F04C2/088" definition-exists="false" ipc-concordant="F04C2/08" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2/088</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Elements in the toothed wheels or the carter for relieving the pressure of fluid imprisoned in the zones of engagement</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F04C2/10" definition-exists="false" ipc-concordant="F04C2/10" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2/10</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="F04C2/101" definition-exists="false" ipc-concordant="F04C2/10" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2/101</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>with a crescent-shaped filler element, located between the inner and outer intermeshing members</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="F04C2/102" definition-exists="false" ipc-concordant="F04C2/10" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2/102</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>the two members rotating simultaneously around their respective axes</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="F04C2/103" definition-exists="false" ipc-concordant="F04C2/10" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2/103</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>one member having simultaneously a rotational movement about its own axis and an orbital movement</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="F04C2/104" definition-exists="false" ipc-concordant="F04C2/10" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2/104</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>having an articulated driving shaft</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="F04C2/105" definition-exists="false" ipc-concordant="F04C2/10" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2/105</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Details concerning timing or distribution valves</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="12" additional-only="false" sort-key="F04C2/106" definition-exists="false" ipc-concordant="F04C2/10" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2/106</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Spool type distribution valves</text></CPC-specific-text></title-part></class-title></classification-item></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="F04C2/107" definition-exists="false" ipc-concordant="F04C2/107" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2/107</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>with helical teeth</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="F04C2/1071" definition-exists="false" ipc-concordant="F04C2/107" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2/1071</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>the inner and outer member having a different number of threads and one of the two being made of elastic materials, e.g. Moineau type</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="12" additional-only="false" sort-key="F04C2/1073" definition-exists="false" ipc-concordant="F04C2/107" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2/1073</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>where one member is stationary while the other member rotates and orbits</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="13" additional-only="false" sort-key="F04C2/1075" definition-exists="true" ipc-concordant="F04C2/107" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2/1075</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Construction of the stationary member</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="12" additional-only="false" sort-key="F04C2/1076" definition-exists="false" ipc-concordant="F04C2/107" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2/1076</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>where one member orbits or wobbles relative to the other member which rotates around a fixed axis</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="12" additional-only="false" sort-key="F04C2/1078" definition-exists="false" ipc-concordant="F04C2/107" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2/1078</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>where one member rotates and both members are allowed to orbit or wobble</text></CPC-specific-text></title-part></class-title></classification-item></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="F04C2/113" definition-exists="false" ipc-concordant="F04C2/113" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2/113</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>the inner member carrying rollers intermeshing with the outer member</text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F04C2/12" definition-exists="false" ipc-concordant="F04C2/12" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2/12</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>of other than internal-axis type</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="F04C2/123" definition-exists="false" ipc-concordant="F04C2/12" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2/123</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>with radially or approximately radially from the rotor body extending tooth-like elements, co-operating with recesses in the other rotor, e.g. one tooth</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="F04C2/126" definition-exists="false" ipc-concordant="F04C2/12" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2/126</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>with radially from the rotor body extending elements, not necessarily co-operating with corresponding recesses in the other rotor, e.g. lobes, Roots type</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="F04C2/14" definition-exists="false" ipc-concordant="F04C2/14" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2/14</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>with toothed rotary pistons</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="F04C2/16" definition-exists="false" ipc-concordant="F04C2/16" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2/16</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>with helical teeth, e.g. chevron-shaped, screw type </text><CPC-specific-text><reference><text>for non-parallel axes of movement <class-ref scheme="cpc">F04C3/00</class-ref></text></reference></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="12" additional-only="false" sort-key="F04C2/165" definition-exists="false" ipc-concordant="F04C2/16" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2/165</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>having more than two rotary pistons with parallel axes</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="F04C2/18" definition-exists="false" ipc-concordant="F04C2/18" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2/18</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>with similar tooth forms </text><reference><text><class-ref scheme="cpc">F04C2/16</class-ref> takes precedence</text></reference></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="F04C2/20" definition-exists="false" ipc-concordant="F04C2/20" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2/20</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>with dissimilar tooth forms </text><reference><text><class-ref scheme="cpc">F04C2/16</class-ref> takes precedence</text></reference></title-part></class-title></classification-item></classification-item></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F04C2/22" definition-exists="false" ipc-concordant="F04C2/22" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2/22</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>of internal-axis type with equidirectional movement of co-operating members at the points of engagement, or with one of the co-operating members being stationary, the inner member having more teeth or tooth-equivalents than the outer member</text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F04C2/24" definition-exists="false" ipc-concordant="F04C2/24" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2/24</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>of counter-engagement type, i.e. the movement of co-operating members at the points of engagement being in opposite directions</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F04C2/26" definition-exists="false" ipc-concordant="F04C2/26" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2/26</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>of internal-axis type</text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F04C2/28" definition-exists="false" ipc-concordant="F04C2/28" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2/28</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>of other than internal-axis type</text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F04C2/30" definition-exists="false" ipc-concordant="F04C2/30" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2/30</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>having the characteristics covered by two or more groups <class-ref scheme="cpc">F04C2/02</class-ref>, <class-ref scheme="cpc">F04C2/08</class-ref>, <class-ref scheme="cpc">F04C2/22</class-ref>, <class-ref scheme="cpc">F04C2/24</class-ref> or having the characteristics covered by one of these groups together with some other type of movement between co-operating members</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F04C2/32" definition-exists="false" ipc-concordant="F04C2/32" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2/32</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>having both the movement defined in groups <class-ref scheme="cpc">F04C2/02</class-ref> and relative reciprocation between co-operating members</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="F04C2/321" definition-exists="false" ipc-concordant="F04C2/32" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2/321</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>with vanes hinged to the inner member and reciprocating with respect to the inner member</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="F04C2/322" definition-exists="false" ipc-concordant="F04C2/32" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2/322</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>with vanes hinged to the outer member and reciprocating with respect to the outer member</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="F04C2/324" definition-exists="false" ipc-concordant="F04C2/324" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2/324</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>with vanes hinged to the inner member and reciprocating with respect to the outer member</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="F04C2/328" definition-exists="false" ipc-concordant="F04C2/328" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2/328</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>and hinged to the outer member</text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="F04C2/332" definition-exists="false" ipc-concordant="F04C2/332" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2/332</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>with vanes hinged to the outer member and reciprocating with respect to the inner member</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="F04C2/336" definition-exists="false" ipc-concordant="F04C2/336" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2/336</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>and hinged to the inner member</text></title-part></class-title></classification-item></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F04C2/34" definition-exists="false" ipc-concordant="F04C2/34" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2/34</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>having the movement defined in groups <class-ref scheme="cpc">F04C2/08</class-ref> or <class-ref scheme="cpc">F04C2/22</class-ref> and relative reciprocation between the co-operating members</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="F04C2/344" definition-exists="false" ipc-concordant="F04C2/344" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2/344</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>with vanes reciprocating with respect to the inner member</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="F04C2/3441" definition-exists="false" ipc-concordant="F04C2/344" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2/3441</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>the inner and outer member being in contact along one line or continuous surface substantially parallel to the axis of rotation</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="12" additional-only="false" sort-key="F04C2/3442" definition-exists="false" ipc-concordant="F04C2/344" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2/3442</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>the surfaces of the inner and outer member, forming the working space, being surfaces of revolution</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="12" additional-only="false" sort-key="F04C2/3443" definition-exists="false" ipc-concordant="F04C2/344" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2/3443</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>with a separation element located between the inlet and outlet opening</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="12" additional-only="false" sort-key="F04C2/3445" definition-exists="false" ipc-concordant="F04C2/344" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2/3445</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>the vanes having the form of rollers, slippers or the like</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="F04C2/3446" definition-exists="false" ipc-concordant="F04C2/344" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2/3446</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>the inner and outer member being in contact along more than one line or surface</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="12" additional-only="false" sort-key="F04C2/3447" definition-exists="false" ipc-concordant="F04C2/344" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2/3447</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>the vanes having the form of rollers, slippers or the like</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="F04C2/3448" definition-exists="false" ipc-concordant="F04C2/344" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2/3448</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>with axially movable vanes</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="F04C2/348" definition-exists="false" ipc-concordant="F04C2/348" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2/348</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>the vanes positively engaging, with circumferential play, an outer rotatable member</text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="F04C2/352" definition-exists="false" ipc-concordant="F04C2/352" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2/352</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>the vanes being pivoted on the axis of the outer member</text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="F04C2/356" definition-exists="false" ipc-concordant="F04C2/356" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2/356</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>with vanes reciprocating with respect to the outer member</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="F04C2/3562" definition-exists="false" ipc-concordant="F04C2/356" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2/3562</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>the inner and outer member being in contact along one line or continuous surface substantially parallel to the axis of rotation</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="12" additional-only="false" sort-key="F04C2/3564" definition-exists="false" ipc-concordant="F04C2/356" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2/3564</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>the surfaces of the inner and outer member, forming the working space, being surfaces of revolution</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="F04C2/3566" definition-exists="false" ipc-concordant="F04C2/356" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2/3566</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>the inner and outer member being in contact along more than one line or surface</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="F04C2/3568" definition-exists="false" ipc-concordant="F04C2/356" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2/3568</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>with axially movable vanes</text></CPC-specific-text></title-part></class-title></classification-item></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F04C2/36" definition-exists="false" ipc-concordant="F04C2/36" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2/36</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>having both the movements defined in groups <class-ref scheme="cpc">F04C2/22</class-ref> and <class-ref scheme="cpc">F04C2/24</class-ref></text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F04C2/38" definition-exists="false" ipc-concordant="F04C2/38" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2/38</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>having the movement defined in group <class-ref scheme="cpc">F04C2/02</class-ref> and having a hinged member </text><reference><text><class-ref scheme="cpc">F04C2/32</class-ref> takes precedence</text></reference></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="F04C2/39" definition-exists="false" ipc-concordant="F04C2/39" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2/39</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>with vanes hinged to the inner as well as to the outer member</text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F04C2/40" definition-exists="false" ipc-concordant="F04C2/40" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2/40</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>having the movement defined in group <class-ref scheme="cpc">F04C2/08</class-ref> or <class-ref scheme="cpc">F04C2/22</class-ref> and having a hinged member</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="F04C2/44" definition-exists="false" ipc-concordant="F04C2/44" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2/44</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>with vanes hinged to the inner member</text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="F04C2/46" definition-exists="false" ipc-concordant="F04C2/46" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2/46</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>with vanes hinged to the outer member</text></title-part></class-title></classification-item></classification-item></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="7" additional-only="false" sort-key="F04C3/00" definition-exists="true" ipc-concordant="F04C3/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C3/00</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Rotary-piston machines or pumps, with non-parallel axes of movement of co-operating members, e.g. of screw type </text><reference><text>with the working-chamber walls at least partly resiliently deformable <class-ref scheme="cpc">F04C5/00</class-ref>; rotary-piston pumps with non-parallel axes of movement of co-operating members specially adapted for elastic fluids <class-ref scheme="cpc">F04C18/48</class-ref></text></reference></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F04C3/02" definition-exists="false" ipc-concordant="F04C3/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C3/02</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>the axes being arranged at an angle of 90 degrees</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F04C3/04" definition-exists="false" ipc-concordant="F04C3/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C3/04</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>of intermeshing engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing</text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F04C3/06" definition-exists="false" ipc-concordant="F04C3/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C3/06</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>the axes being arranged otherwise than at an angle of 90 degrees</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F04C3/08" definition-exists="false" ipc-concordant="F04C3/08" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C3/08</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>of intermeshing engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="F04C3/085" definition-exists="false" ipc-concordant="F04C3/08" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C3/085</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>the axes of cooperating members being on the same plane</text></CPC-specific-text></title-part></class-title></classification-item></classification-item></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="7" additional-only="false" sort-key="F04C5/00" definition-exists="true" ipc-concordant="F04C5/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C5/00</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Rotary-piston machines or pumps with the working-chamber walls at least partly resiliently deformable </text><reference><text>such pumps specially adapted for elastic fluids <class-ref scheme="cpc">F04C18/00</class-ref></text></reference></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="7" additional-only="false" sort-key="F04C7/00" definition-exists="true" ipc-concordant="F04C7/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C7/00</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Rotary-piston machines or pumps with fluid ring or the like </text><reference><text>such pumps specially adapted for elastic fluids <class-ref scheme="cpc">F04C19/00</class-ref></text></reference></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="7" additional-only="false" sort-key="F04C9/00" definition-exists="true" ipc-concordant="F04C9/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C9/00</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Oscillating-piston machines or pumps </text><reference><text>such pumps specially adapted for elastic fluids <class-ref scheme="cpc">F04C21/00</class-ref></text></reference></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F04C9/002" definition-exists="false" ipc-concordant="F04C9/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C9/002</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>the piston oscillating around a fixed axis</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F04C9/005" definition-exists="true" ipc-concordant="F04C9/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C9/005</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>the piston oscillating in the space, e.g. around a fixed point </text><reference><text>rotary-piston machines or pumps with non-parallel axes of movement between co-operating members <class-ref scheme="cpc">F04C3/00</class-ref></text></reference></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F04C9/007" definition-exists="false" ipc-concordant="F04C9/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C9/007</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>the points of the moving element describing approximately an alternating movement in axial direction with respect to the other element</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="7" additional-only="false" sort-key="F04C11/00" definition-exists="true" ipc-concordant="F04C11/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C11/00</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Combinations of two or more machines or pumps, each being of rotary-piston or oscillating-piston type </text><reference><text>combinations of such pumps specially adapted for elastic fluids <class-ref scheme="cpc">F04C23/00</class-ref></text></reference></title-part><title-part><text>Pumping installations </text><reference><text><class-ref scheme="cpc">F04C13/00</class-ref> takes precedence; specially adapted for elastic fluids <class-ref scheme="cpc">F04C23/00</class-ref>; fluid gearing <class-ref scheme="cpc">F16H</class-ref></text></reference></title-part></class-title><notes-and-warnings date-revised="2013-01-01"><note type="note"><note-paragraph>Multi-stage engines, motors, pumps or compressors with stages connected in series or in parallel are not considered as having complementary function</note-paragraph></note></notes-and-warnings>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F04C11/001" definition-exists="false" ipc-concordant="F04C11/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C11/001</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>of similar working principle</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F04C11/003" definition-exists="false" ipc-concordant="F04C11/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C11/003</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>having complementary function</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F04C11/005" definition-exists="false" ipc-concordant="F04C11/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C11/005</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>of dissimilar working principle</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F04C11/006" definition-exists="false" ipc-concordant="F04C11/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C11/006</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>having complementary function</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F04C11/008" definition-exists="false" ipc-concordant="F04C11/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C11/008</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Enclosed motor pump units</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="7" additional-only="false" sort-key="F04C13/00" definition-exists="true" ipc-concordant="F04C13/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C13/00</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Adaptations of machines or pumps for special use, e.g. for extremely high pressures </text><reference><text>of pumps specially adapted for elastic fluids <class-ref scheme="cpc">F04C25/00</class-ref></text></reference></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F04C13/001" definition-exists="false" ipc-concordant="F04C13/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C13/001</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Pumps for particular liquids</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F04C13/002" definition-exists="false" ipc-concordant="F04C13/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C13/002</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>for homogeneous viscous liquids</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="F04C13/004" definition-exists="false" ipc-concordant="F04C13/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C13/004</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>with means for fluidising or diluting the material being pumped</text></CPC-specific-text></title-part></class-title></classification-item></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F04C13/005" definition-exists="true" ipc-concordant="F04C13/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C13/005</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Removing contaminants, deposits or scale from the pump; Cleaning</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F04C13/007" definition-exists="false" ipc-concordant="F04C13/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C13/007</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Venting; Gas and vapour separation during pumping </text><reference><text>preventing vapour lock in fuel pumps <class-ref scheme="cpc">F02M37/20</class-ref>, in centrifugal pumps <class-ref scheme="cpc">F04D9/00</class-ref></text></reference></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F04C13/008" definition-exists="true" ipc-concordant="F04C13/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C13/008</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Pumps for submersible use, i.e. down-hole pumping</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="7" additional-only="false" sort-key="F04C14/00" definition-exists="true" ipc-concordant="F04C14/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C14/00</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations </text><reference><text>of pumps or pumping installations specially adapted for elastic fluids <class-ref scheme="cpc">F04C28/00</class-ref></text></reference></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F04C14/02" definition-exists="false" ipc-concordant="F04C14/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C14/02</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>specially adapted for several machines or pumps connected in series or in parallel</text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F04C14/04" definition-exists="false" ipc-concordant="F04C14/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C14/04</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>specially adapted for reversible machines or pumps</text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F04C14/06" definition-exists="true" ipc-concordant="F04C14/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C14/06</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>specially adapted for stopping, starting, idling or no-load operation</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F04C14/065" definition-exists="false" ipc-concordant="F04C14/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C14/065</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Capacity control using a multiplicity of units or pumping capacities, e.g. multiple chambers, individually switchable or controllable</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F04C14/08" definition-exists="false" ipc-concordant="F04C14/08" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C14/08</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>characterised by varying the rotational speed</text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F04C14/10" definition-exists="false" ipc-concordant="F04C14/10" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C14/10</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>characterised by changing the positions of the inlet or outlet openings with respect to the working chamber</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F04C14/12" definition-exists="false" ipc-concordant="F04C14/12" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C14/12</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>using sliding valves</text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F04C14/14" definition-exists="false" ipc-concordant="F04C14/14" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C14/14</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>using rotating valves</text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F04C14/16" definition-exists="false" ipc-concordant="F04C14/16" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C14/16</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>using lift valves</text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F04C14/18" definition-exists="true" ipc-concordant="F04C14/18" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C14/18</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>characterised by varying the volume of the working chamber </text><reference><text>by changing the positions of inlet or outlet openings <class-ref scheme="cpc">F04C14/10</class-ref></text></reference></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F04C14/185" definition-exists="false" ipc-concordant="F04C14/18" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C14/185</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>by varying the useful pumping length of the cooperating members in the axial direction</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F04C14/20" definition-exists="false" ipc-concordant="F04C14/20" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C14/20</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>by changing the form of the inner or outer contour of the working chamber</text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F04C14/22" definition-exists="true" ipc-concordant="F04C14/22" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C14/22</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>by changing the eccentricity between cooperating members</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="F04C14/223" definition-exists="false" ipc-concordant="F04C14/22" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C14/223</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>using a movable cam</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="F04C14/226" definition-exists="false" ipc-concordant="F04C14/22" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C14/226</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>by pivoting the cam around an eccentric axis</text></CPC-specific-text></title-part></class-title></classification-item></classification-item></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F04C14/24" definition-exists="false" ipc-concordant="F04C14/24" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2017-02-01" status="published"><classification-symbol>F04C14/24</classification-symbol><class-title date-revised="2017-02-01"><title-part><text>characterised by using valves controlling pressure or flow rate, e.g. discharge valves </text><CPC-specific-text><text>or unloading valves</text></CPC-specific-text><reference><text><class-ref scheme="cpc">F04C14/10</class-ref> takes precedence</text></reference></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F04C14/26" definition-exists="false" ipc-concordant="F04C14/26" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C14/26</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>using bypass channels</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="F04C14/265" definition-exists="false" ipc-concordant="F04C14/26" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C14/265</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>being obtained by displacing a lateral sealing face</text></CPC-specific-text></title-part></class-title></classification-item></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F04C14/28" definition-exists="false" ipc-concordant="F04C14/28" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C14/28</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Safety arrangements</text></title-part><title-part><text>Monitoring</text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="7" additional-only="false" sort-key="F04C15/00" definition-exists="true" ipc-concordant="F04C15/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2016-05-01" status="published"><classification-symbol>F04C15/00</classification-symbol><class-title date-revised="2016-05-01"><title-part><text>Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups <class-ref scheme="cpc">F04C2/00</class-ref>&#160;-&#160;<class-ref scheme="cpc">F04C14/00</class-ref> </text><reference><text>of pumps specially adapted for elastic fluids <class-ref scheme="cpc">F04C18/00</class-ref>&#160;-&#160;<class-ref scheme="cpc">F04C29/00</class-ref></text></reference></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F04C15/0003" definition-exists="false" ipc-concordant="F04C15/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C15/0003</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Sealing arrangements in rotary-piston machines or pumps </text><reference><text>sealing in general <class-ref scheme="cpc">F16J</class-ref></text></reference></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F04C15/0007" definition-exists="false" ipc-concordant="F04C15/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C15/0007</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Radial sealings for working fluid</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="F04C15/0011" definition-exists="false" ipc-concordant="F04C15/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C15/0011</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>of rigid material</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="F04C15/0015" definition-exists="false" ipc-concordant="F04C15/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C15/0015</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>of resilient material</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="F04C15/0019" definition-exists="false" ipc-concordant="F04C15/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C15/0019</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Radial sealing elements specially adapted for intermeshing-engagement type machines or pumps, e.g. gear machines or pumps</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F04C15/0023" definition-exists="false" ipc-concordant="F04C15/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C15/0023</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Axial sealings for working fluid</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="F04C15/0026" definition-exists="false" ipc-concordant="F04C15/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C15/0026</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Elements specially adapted for sealing of the lateral faces of intermeshing-engagement type machines or pumps, e.g. gear machines or pumps</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F04C15/003" definition-exists="false" ipc-concordant="F04C15/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C15/003</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Sealings for working fluid between radially and axially moving parts</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F04C15/0034" definition-exists="false" ipc-concordant="F04C15/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C15/0034</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>for other than the working fluid, i.e. the sealing arrangements are not between working chambers of the machine</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="F04C15/0038" definition-exists="false" ipc-concordant="F04C15/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C15/0038</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Shaft sealings specially adapted for rotary-piston machines or pumps</text></CPC-specific-text></title-part></class-title></classification-item></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F04C15/0042" definition-exists="true" ipc-concordant="F04C15/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C15/0042</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Systems for the equilibration of forces acting on the machines or pump </text><reference><text>interstice adjustment other than by fluid pressure <class-ref scheme="cpc">F01C21/102</class-ref></text></reference></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F04C15/0046" definition-exists="true" ipc-concordant="F04C15/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C15/0046</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Internal leakage control</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F04C15/0049" definition-exists="true" ipc-concordant="F04C15/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C15/0049</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Equalization of pressure pulses </text><reference><text>silencing for compressors <class-ref scheme="cpc">F04C29/06</class-ref></text></reference></CPC-specific-text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F04C15/0053" definition-exists="false" ipc-concordant="F04C15/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C15/0053</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Venting means for starting</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F04C15/0057" definition-exists="false" ipc-concordant="F04C15/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C15/0057</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Driving elements, brakes, couplings, transmission specially adapted for machines or pumps </text><reference><text>brakes, couplings, transmissions <u>per se</u> <class-ref scheme="cpc">F16</class-ref>, <class-ref scheme="cpc">B60</class-ref></text></reference></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F04C15/0061" definition-exists="false" ipc-concordant="F04C15/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C15/0061</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Means for transmitting movement from the prime mover to driven parts of the pump, e.g. clutches, couplings, transmissions</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="F04C15/0065" definition-exists="true" ipc-concordant="F04C15/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C15/0065</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>for eccentric movement</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="F04C15/0069" definition-exists="false" ipc-concordant="F04C15/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C15/0069</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Magnetic couplings</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="F04C15/0073" definition-exists="false" ipc-concordant="F04C15/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C15/0073</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Couplings between rotors and input or output shafts acting by interengaging or mating parts, i.e. positive coupling of rotor and shaft</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F04C15/0076" definition-exists="true" ipc-concordant="F04C15/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C15/0076</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Fixing rotors on shafts, e.g. by clamping together hub and shaft</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F04C15/008" definition-exists="false" ipc-concordant="F04C15/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C15/008</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Prime movers</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F04C15/0084" definition-exists="false" ipc-concordant="F04C15/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C15/0084</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Brakes, braking assemblies</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F04C15/0088" definition-exists="false" ipc-concordant="F04C15/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C15/0088</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Lubrication </text><reference><text>of machines or engines in general <class-ref scheme="cpc">F01M</class-ref></text></reference></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F04C15/0092" definition-exists="false" ipc-concordant="F04C15/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C15/0092</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Control systems for the circulation of the lubricant</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F04C15/0096" definition-exists="false" ipc-concordant="F04C15/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C15/0096</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Heating; Cooling </text><reference><text>of machines or engines in general <class-ref scheme="cpc">F01P</class-ref></text></reference></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F04C15/06" definition-exists="false" ipc-concordant="F04C15/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C15/06</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F04C15/062" definition-exists="false" ipc-concordant="F04C15/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C15/062</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Arrangements for supercharging the working space </text><reference><text>similar arrangements for internal combustion engines <class-ref scheme="cpc">F02B33/00</class-ref>, <class-ref scheme="cpc">F02B37/00</class-ref></text></reference></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F04C15/064" definition-exists="false" ipc-concordant="F04C15/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C15/064</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>with inlet and outlet valves specially adapted for rotary or oscillating piston machines or pumps</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="F04C15/066" definition-exists="false" ipc-concordant="F04C15/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C15/066</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>of the non-return type</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="F04C15/068" definition-exists="false" ipc-concordant="F04C15/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C15/068</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>of the elastic type, e.g. reed valves</text></CPC-specific-text></title-part></class-title></classification-item></classification-item></classification-item></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="7" additional-only="false" sort-key="F04C18/00" definition-exists="true" ipc-concordant="F04C18/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2016-05-01" status="published"><classification-symbol>F04C18/00</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Rotary-piston pumps specially adapted for elastic fluids </text><reference><text>with fluid ring or the like <class-ref scheme="cpc">F04C19/00</class-ref>; rotary-piston pumps in which the working-fluid is exclusively displaced by one or more reciprocating pistons <class-ref scheme="cpc">F04B</class-ref></text></reference></title-part></class-title><notes-and-warnings date-revised="2013-01-01"><note type="note"><note-paragraph>Group <class-ref scheme="cpc">F04C18/30</class-ref> takes precedence over groups <class-ref scheme="cpc">F04C18/02</class-ref>&#160;-&#160;<class-ref scheme="cpc">F04C18/28</class-ref> and <class-ref scheme="cpc">F04C18/48</class-ref>&#160;-&#160;<class-ref scheme="cpc">F04C18/56</class-ref>.</note-paragraph></note></notes-and-warnings>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F04C18/02" definition-exists="false" ipc-concordant="F04C18/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C18/02</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F04C18/0207" definition-exists="false" ipc-concordant="F04C18/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C18/0207</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>both members having co-operating elements in spiral form</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="F04C18/0215" definition-exists="false" ipc-concordant="F04C18/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C18/0215</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>where only one member is moving</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="F04C18/0223" definition-exists="false" ipc-concordant="F04C18/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C18/0223</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>with symmetrical double wraps</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="F04C18/023" definition-exists="false" ipc-concordant="F04C18/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C18/023</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>where both members are moving</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="F04C18/0238" definition-exists="false" ipc-concordant="F04C18/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C18/0238</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>with symmetrical double wraps</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="F04C18/0246" definition-exists="false" ipc-concordant="F04C18/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C18/0246</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Details concerning the involute wraps or their base, e.g. geometry</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="F04C18/0253" definition-exists="false" ipc-concordant="F04C18/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C18/0253</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Details concerning the base</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="12" additional-only="false" sort-key="F04C18/0261" definition-exists="false" ipc-concordant="F04C18/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C18/0261</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Details of the ports, e.g. location, number, geometry</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="F04C18/0269" definition-exists="false" ipc-concordant="F04C18/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C18/0269</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Details concerning the involute wraps</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="12" additional-only="false" sort-key="F04C18/0276" definition-exists="false" ipc-concordant="F04C18/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C18/0276</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Different wall heights</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="12" additional-only="false" sort-key="F04C18/0284" definition-exists="false" ipc-concordant="F04C18/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C18/0284</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Details of the wrap tips</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="12" additional-only="false" sort-key="F04C18/0292" definition-exists="false" ipc-concordant="F04C18/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C18/0292</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Ports or channels located in the wrap</text></CPC-specific-text></title-part></class-title></classification-item></classification-item></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F04C18/04" definition-exists="false" ipc-concordant="F04C18/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C18/04</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>of internal-axis type</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="F04C18/045" definition-exists="false" ipc-concordant="F04C18/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C18/045</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>having a C-shaped piston</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F04C18/06" definition-exists="false" ipc-concordant="F04C18/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C18/06</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>of other than internal-axis type</text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F04C18/063" definition-exists="false" ipc-concordant="F04C18/063" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2014-02-04" status="published"><classification-symbol>F04C18/063</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>with coaxially-mounted members having continuously-changing circumferential spacing between them</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="F04C18/067" definition-exists="false" ipc-concordant="F04C18/067" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2014-02-04" status="published"><classification-symbol>F04C18/067</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>having cam-and-follower type drive</text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="F04C18/07" definition-exists="false" ipc-concordant="F04C18/07" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2014-02-04" status="published"><classification-symbol>F04C18/07</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>having crankshaft-and-connecting-rod type drive</text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="F04C18/073" definition-exists="false" ipc-concordant="F04C18/073" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2014-02-04" status="published"><classification-symbol>F04C18/073</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>having pawl-and-ratchet type drive</text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="F04C18/077" definition-exists="false" ipc-concordant="F04C18/077" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2014-02-04" status="published"><classification-symbol>F04C18/077</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>having toothed-gearing type drive</text></title-part></class-title></classification-item></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F04C18/08" definition-exists="true" ipc-concordant="F04C18/08" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C18/08</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F04C18/082" definition-exists="false" ipc-concordant="F04C18/08" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C18/082</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Details specially related to intermeshing engagement type pumps</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="F04C18/084" definition-exists="false" ipc-concordant="F04C18/08" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C18/084</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Toothed wheels</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="F04C18/086" definition-exists="true" ipc-concordant="F04C18/08" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C18/086</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Carter</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="F04C18/088" definition-exists="false" ipc-concordant="F04C18/08" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C18/088</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Elements in the toothed wheels or the carter for relieving the pressure of fluid imprisoned in the zones of engagement</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F04C18/10" definition-exists="false" ipc-concordant="F04C18/10" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C18/10</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>of internal-axis type with the outer member having more teeth or tooth equivalents, e.g. rollers, than the inner member</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="F04C18/103" definition-exists="false" ipc-concordant="F04C18/10" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C18/103</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>with a crescent shaped filler element, located between the inner and outer intermeshing elements</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="F04C18/107" definition-exists="false" ipc-concordant="F04C18/107" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C18/107</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>with helical teeth</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="F04C18/1075" definition-exists="false" ipc-concordant="F04C18/107" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C18/1075</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>the inner and outer member having a different number of threads and one of the two being made of elastic material, e.g. Moineau type</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="F04C18/113" definition-exists="false" ipc-concordant="F04C18/113" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C18/113</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>the inner member carrying rollers intermeshing with the outer member</text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F04C18/12" definition-exists="false" ipc-concordant="F04C18/12" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C18/12</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>of other than internal-axis type</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="F04C18/123" definition-exists="false" ipc-concordant="F04C18/12" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C18/123</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>with radially or approximately radially from the rotor body extending tooth-like elements, co-operating with recesses in the other rotor, e.g. one tooth</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="F04C18/126" definition-exists="false" ipc-concordant="F04C18/12" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C18/126</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>with radially from the rotor body extending elements, not necessarily co-operating with corresponding recesses in the other rotor, e.g. lobes, Roots type</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="F04C18/14" definition-exists="false" ipc-concordant="F04C18/14" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C18/14</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>with toothed rotary pistons</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="F04C18/16" definition-exists="false" ipc-concordant="F04C18/16" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C18/16</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>with helical teeth, e.g. chevron-shaped, screw type </text><CPC-specific-text><reference><text>for non-parallel axes of movement <class-ref scheme="cpc">F04C18/48</class-ref></text></reference></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="12" additional-only="false" sort-key="F04C18/165" definition-exists="false" ipc-concordant="F04C18/16" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C18/165</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>having more than two rotary pistons with parallel axes</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="F04C18/18" definition-exists="false" ipc-concordant="F04C18/18" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C18/18</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>with similar tooth forms </text><reference><text><class-ref scheme="cpc">F04C18/16</class-ref> takes precedence</text></reference></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="F04C18/20" definition-exists="false" ipc-concordant="F04C18/20" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C18/20</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>with dissimilar tooth forms </text><reference><text><class-ref scheme="cpc">F04C18/16</class-ref> takes precedence</text></reference></title-part></class-title></classification-item></classification-item></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F04C18/22" definition-exists="false" ipc-concordant="F04C18/22" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C18/22</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>of internal-axis type with equidirectional movement of co-operating members at the points of engagement, or with one of the co-operating members being stationary, the inner member having more teeth or tooth equivalents than the outer member</text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F04C18/24" definition-exists="false" ipc-concordant="F04C18/24" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C18/24</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>of counter-engagement type, i.e. the movement of co-operating members at the points of engagement being in opposite directions</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F04C18/26" definition-exists="false" ipc-concordant="F04C18/26" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C18/26</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>of internal-axis type</text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F04C18/28" definition-exists="false" ipc-concordant="F04C18/28" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C18/28</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>of other than internal-axis type</text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F04C18/30" definition-exists="false" ipc-concordant="F04C18/30" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C18/30</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>having the characteristics covered by two or more of groups <class-ref scheme="cpc">F04C18/02</class-ref>, <class-ref scheme="cpc">F04C18/08</class-ref>, <class-ref scheme="cpc">F04C18/22</class-ref>, <class-ref scheme="cpc">F04C18/24</class-ref>, <class-ref scheme="cpc">F04C18/48</class-ref>, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F04C18/32" definition-exists="false" ipc-concordant="F04C18/32" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C18/32</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>having both the movement defined in group <class-ref scheme="cpc">F04C18/02</class-ref> and relative reciprocation between the co-operating members</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="F04C18/321" definition-exists="false" ipc-concordant="F04C18/32" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C18/321</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>with vanes hinged to the inner member and reciprocating with respect to the inner member</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="F04C18/322" definition-exists="false" ipc-concordant="F04C18/32" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C18/322</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>with vanes hinged to the outer member and reciprocating with respect to the outer member</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="F04C18/324" definition-exists="false" ipc-concordant="F04C18/324" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C18/324</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>with vanes hinged to the inner member and reciprocating with respect to the outer member</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="F04C18/328" definition-exists="false" ipc-concordant="F04C18/328" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C18/328</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>and hinged to the outer member</text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="F04C18/332" definition-exists="false" ipc-concordant="F04C18/332" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C18/332</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>with vanes hinged to the outer member and reciprocating with respect to the inner member</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="F04C18/336" definition-exists="false" ipc-concordant="F04C18/336" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C18/336</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>and hinged to the inner member</text></title-part></class-title></classification-item></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F04C18/34" definition-exists="false" ipc-concordant="F04C18/34" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C18/34</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>having the movement defined in group <class-ref scheme="cpc">F04C18/08</class-ref> or <class-ref scheme="cpc">F04C18/22</class-ref> and relative reciprocation between the co-operating members</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="F04C18/344" definition-exists="false" ipc-concordant="F04C18/344" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C18/344</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>with vanes reciprocating with respect to the inner member</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="F04C18/3441" definition-exists="false" ipc-concordant="F04C18/344" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C18/3441</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>the inner and outer member being in contact along one line or continuous surface substantially parallel to the axis of rotation</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="12" additional-only="false" sort-key="F04C18/3442" definition-exists="false" ipc-concordant="F04C18/344" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C18/3442</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>the surfaces of the inner and outer member, forming the inlet and outlet opening</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="12" additional-only="false" sort-key="F04C18/3443" definition-exists="false" ipc-concordant="F04C18/344" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C18/3443</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>with a separation element located between the inlet and outlet opening</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="12" additional-only="false" sort-key="F04C18/3445" definition-exists="false" ipc-concordant="F04C18/344" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C18/3445</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>the vanes having the form of rollers, slippers or the like</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="F04C18/3446" definition-exists="false" ipc-concordant="F04C18/344" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C18/3446</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>the inner and outer member being in contact along more than one line or surface</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="12" additional-only="false" sort-key="F04C18/3447" definition-exists="false" ipc-concordant="F04C18/344" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C18/3447</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>the vanes having the form of rollers, slippers or the like</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="F04C18/3448" definition-exists="false" ipc-concordant="F04C18/344" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C18/3448</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>with axially movable vanes</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="F04C18/348" definition-exists="false" ipc-concordant="F04C18/348" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C18/348</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>the vanes positively engaging, with circumferential play, an outer rotatable member</text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="F04C18/352" definition-exists="false" ipc-concordant="F04C18/352" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C18/352</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>the vanes being pivoted on the axis of the outer member</text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="F04C18/356" definition-exists="false" ipc-concordant="F04C18/356" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C18/356</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>with vanes reciprocating with respect to the outer member</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="F04C18/3562" definition-exists="false" ipc-concordant="F04C18/356" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C18/3562</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>the inner and outer member being in contact along one line or continuous surfaces substantially parallel to the axis of rotation</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="12" additional-only="false" sort-key="F04C18/3564" definition-exists="false" ipc-concordant="F04C18/356" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C18/3564</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>the surfaces of the inner and outer member, forming the working space, being surfaces of revolution</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="F04C18/3566" definition-exists="false" ipc-concordant="F04C18/356" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C18/3566</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>the inner and outer member being in contact along more than line or surface</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="F04C18/3568" definition-exists="false" ipc-concordant="F04C18/356" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C18/3568</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>with axially movable vanes</text></CPC-specific-text></title-part></class-title></classification-item></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F04C18/36" definition-exists="false" ipc-concordant="F04C18/36" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2017-08-01" status="published"><classification-symbol>F04C18/36</classification-symbol><class-title date-revised="2017-08-01"><title-part><text>having both the movements defined in groups <class-ref scheme="cpc">F04C18/22</class-ref> and <class-ref scheme="cpc">F04C18/24</class-ref></text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F04C18/38" definition-exists="false" ipc-concordant="F04C18/38" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C18/38</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>having the movement defined in group <class-ref scheme="cpc">F04C18/02</class-ref> and having a hinged member </text><reference><text><class-ref scheme="cpc">F04C18/32</class-ref> takes precedence</text></reference></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="F04C18/39" definition-exists="false" ipc-concordant="F04C18/39" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C18/39</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>with vanes hinged to the inner as well as to the outer member</text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F04C18/40" definition-exists="false" ipc-concordant="F04C18/40" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C18/40</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>having the movement defined in group <class-ref scheme="cpc">F04C18/08</class-ref> or <class-ref scheme="cpc">F04C18/22</class-ref> and having a hinged member</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="F04C18/44" definition-exists="false" ipc-concordant="F04C18/44" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C18/44</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>with vanes hinged to the inner member</text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="F04C18/46" definition-exists="false" ipc-concordant="F04C18/46" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C18/46</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>with vanes hinged to the outer member</text></title-part></class-title></classification-item></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F04C18/48" definition-exists="false" ipc-concordant="F04C18/48" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C18/48</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Rotary-piston pumps with non-parallel axes of movement of co-operating members</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F04C18/50" definition-exists="false" ipc-concordant="F04C18/50" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C18/50</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>the axes being arranged at an angle of 90 degrees</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="F04C18/52" definition-exists="false" ipc-concordant="F04C18/52" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C18/52</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>of intermeshing engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing</text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F04C18/54" definition-exists="false" ipc-concordant="F04C18/54" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C18/54</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>the axes being arranged otherwise than at an angle of 90 degrees</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="F04C18/56" definition-exists="false" ipc-concordant="F04C18/56" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C18/56</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>of intermeshing engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="F04C18/565" definition-exists="false" ipc-concordant="F04C18/56" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C18/565</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>the axes of cooperating members being on the same plane</text></CPC-specific-text></title-part></class-title></classification-item></classification-item></classification-item></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="7" additional-only="false" sort-key="F04C19/00" definition-exists="true" ipc-concordant="F04C19/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C19/00</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Rotary-piston pumps with fluid ring or the like, specially adapted for elastic fluids</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F04C19/001" definition-exists="false" ipc-concordant="F04C19/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C19/001</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>General arrangements, plants, flowsheets</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F04C19/002" definition-exists="false" ipc-concordant="F04C19/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C19/002</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>with rotating outer members</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F04C19/004" definition-exists="false" ipc-concordant="F04C19/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C19/004</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Details concerning the operating liquid, e.g. nature, separation, cooling, cleaning, control of the supply</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F04C19/005" definition-exists="false" ipc-concordant="F04C19/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C19/005</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Details concerning the admission or discharge</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F04C19/007" definition-exists="false" ipc-concordant="F04C19/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C19/007</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Port members in the form of side plates</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F04C19/008" definition-exists="false" ipc-concordant="F04C19/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C19/008</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Port members in the form of conical or cylindrical pieces situated in the centre of the impeller</text></CPC-specific-text></title-part></class-title></classification-item></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="7" additional-only="false" sort-key="F04C21/00" definition-exists="true" ipc-concordant="F04C21/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C21/00</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Oscillating-piston pumps specially adapted for elastic fluids</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F04C21/002" definition-exists="false" ipc-concordant="F04C21/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C21/002</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>the piston oscillating around a fixed axis</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F04C21/005" definition-exists="true" ipc-concordant="F04C21/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C21/005</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>the piston oscillating in the space, e.g. around a fixed point </text><reference><text>rotary-piston pumps with non-parallel axes of rotation between co-operating members <class-ref scheme="cpc">F04C18/48</class-ref></text></reference></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F04C21/007" definition-exists="false" ipc-concordant="F04C21/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C21/007</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>the points of the moving element describing approximately an alternating movement in axial direction with respect to the other element</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="7" additional-only="false" sort-key="F04C23/00" definition-exists="true" ipc-concordant="F04C23/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C23/00</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids</text></title-part><title-part><text>Pumping installations specially adapted for elastic fluids</text></title-part><title-part><text>Multi-stage pumps specially adapted for elastic fluids </text><reference><text><class-ref scheme="cpc">F04C25/00</class-ref> takes precedence</text></reference></title-part></class-title><notes-and-warnings date-revised="2013-01-01"><note type="note"><note-paragraph>Multi-stage pumps or compressors with stages connected in series or in parallel are not considered as having complementary function</note-paragraph></note></notes-and-warnings>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F04C23/001" definition-exists="false" ipc-concordant="F04C23/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C23/001</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>of similar working principle</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F04C23/003" definition-exists="false" ipc-concordant="F04C23/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C23/003</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>having complementary function</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F04C23/005" definition-exists="false" ipc-concordant="F04C23/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C23/005</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>of dissimilar working principle</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F04C23/006" definition-exists="false" ipc-concordant="F04C23/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C23/006</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>having complementary function</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F04C23/008" definition-exists="false" ipc-concordant="F04C23/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C23/008</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Hermetic pumps</text></CPC-specific-text></title-part></class-title><notes-and-warnings date-revised="2013-01-01"><note type="note"><note-paragraph>Multi-stage steam engines, motors, pumps or compressors with stages connected in series or in parallel are not considered as having complementary function</note-paragraph></note></notes-and-warnings></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F04C23/02" definition-exists="false" ipc-concordant="F04C23/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C23/02</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Pumps characterised by combination with or adaptation to specific driving engines or motors </text><reference><text>predominant aspects of the engines or motors, <u>see</u> the relevant classes</text></reference></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="7" additional-only="false" sort-key="F04C25/00" definition-exists="true" ipc-concordant="F04C25/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C25/00</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Adaptations of pumps for special use of pumps for elastic fluids</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F04C25/02" definition-exists="true" ipc-concordant="F04C25/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C25/02</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>for producing high vacuum </text><reference><text>sealing arrangements <class-ref scheme="cpc">F04C27/00</class-ref>; silencing <class-ref scheme="cpc">F04C29/06</class-ref></text></reference></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="7" additional-only="false" sort-key="F04C27/00" definition-exists="true" ipc-concordant="F04C27/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C27/00</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Sealing arrangements in rotary-piston pumps specially adapted for elastic fluids</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F04C27/001" definition-exists="false" ipc-concordant="F04C27/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C27/001</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Radial sealings for working fluid</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F04C27/002" definition-exists="false" ipc-concordant="F04C27/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C27/002</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>of rigid material</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F04C27/003" definition-exists="false" ipc-concordant="F04C27/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C27/003</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>of resilient material</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F04C27/004" definition-exists="false" ipc-concordant="F04C27/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C27/004</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Radial sealing elements specially adapted for intermeshing-engagement type pumps, e.g. gear pumps</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F04C27/005" definition-exists="true" ipc-concordant="F04C27/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C27/005</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Axial sealings for working fluid</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F04C27/006" definition-exists="false" ipc-concordant="F04C27/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C27/006</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Elements specially adapted for sealing of the lateral faces of intermeshing-engagement type pumps, e.g. gear pumps</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F04C27/007" definition-exists="false" ipc-concordant="F04C27/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C27/007</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Sealings for working fluid between radially and axially moving parts</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F04C27/008" definition-exists="false" ipc-concordant="F04C27/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C27/008</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>for other than working fluid, i.e. the sealing arrangements are not between working chambers of the machine</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F04C27/009" definition-exists="false" ipc-concordant="F04C27/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C27/009</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Shaft sealings specially adapted for pumps</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F04C27/02" definition-exists="false" ipc-concordant="F04C27/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C27/02</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Liquid sealing for high-vacuum pumps </text><CPC-specific-text><text>or for compressors</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="7" additional-only="false" sort-key="F04C28/00" definition-exists="true" ipc-concordant="F04C28/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C28/00</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F04C28/02" definition-exists="false" ipc-concordant="F04C28/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C28/02</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>specially adapted for several pumps connected in series or in parallel</text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F04C28/04" definition-exists="false" ipc-concordant="F04C28/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C28/04</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>specially adapted for reversible pumps</text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F04C28/06" definition-exists="true" ipc-concordant="F04C28/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C28/06</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>specially adapted for stopping, starting, idling or no-load operation</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F04C28/065" definition-exists="false" ipc-concordant="F04C28/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C28/065</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Capacity control using a multiplicity of units or pumping capacities, e.g. multiple chambers, individually switchable or controllable</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F04C28/08" definition-exists="false" ipc-concordant="F04C28/08" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C28/08</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>characterised by varying the rotational speed</text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F04C28/10" definition-exists="false" ipc-concordant="F04C28/10" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C28/10</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>characterised by changing the positions of the inlet or outlet openings with respect to the working chamber</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F04C28/12" definition-exists="false" ipc-concordant="F04C28/12" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C28/12</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>using sliding valves</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="F04C28/125" definition-exists="false" ipc-concordant="F04C28/12" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C28/125</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>with sliding valves controlled by the use of fluid other than the working fluid</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F04C28/14" definition-exists="false" ipc-concordant="F04C28/14" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C28/14</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>using rotating valves</text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F04C28/16" definition-exists="true" ipc-concordant="F04C28/16" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C28/16</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>using lift valves</text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F04C28/18" definition-exists="true" ipc-concordant="F04C28/18" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C28/18</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>characterised by varying the volume of the working chamber </text><reference><text>by changing the positions of inlet or outlet openings <class-ref scheme="cpc">F04C28/10</class-ref></text></reference></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F04C28/185" definition-exists="false" ipc-concordant="F04C28/18" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C28/185</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>by varying the useful pumping length of the cooperating members in the axial direction</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F04C28/20" definition-exists="false" ipc-concordant="F04C28/20" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C28/20</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>by changing the form of the inner or outer contour of the working chamber</text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F04C28/22" definition-exists="false" ipc-concordant="F04C28/22" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C28/22</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>by changing the eccentricity between cooperating members</text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F04C28/24" definition-exists="false" ipc-concordant="F04C28/24" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2017-02-01" status="published"><classification-symbol>F04C28/24</classification-symbol><class-title date-revised="2017-02-01"><title-part><text>characterised by using valves controlling pressure or flow rate, e.g. discharge valves </text><CPC-specific-text><text>or unloading valves</text></CPC-specific-text><reference><text><class-ref scheme="cpc">F04C28/10</class-ref> takes precedence</text></reference></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F04C28/26" definition-exists="false" ipc-concordant="F04C28/26" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C28/26</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>using bypass channels</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="F04C28/265" definition-exists="false" ipc-concordant="F04C28/26" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C28/265</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>being obtained by displacing a lateral sealing face</text></CPC-specific-text></title-part></class-title></classification-item></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F04C28/28" definition-exists="false" ipc-concordant="F04C28/28" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C28/28</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Safety arrangements</text></title-part><title-part><text>Monitoring</text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="7" additional-only="false" sort-key="F04C29/00" definition-exists="true" ipc-concordant="F04C29/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2016-05-01" status="published"><classification-symbol>F04C29/00</classification-symbol><class-title date-revised="2016-05-01"><title-part><text>Component parts, details or accessories of pumps or pumping installations, not provided for in groups <class-ref scheme="cpc">F04C18/00</class-ref>&#160;-&#160;<class-ref scheme="cpc">F04C28/00</class-ref></text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F04C29/0007" definition-exists="false" ipc-concordant="F04C29/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C29/0007</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Injection of a fluid in the working chamber for sealing, cooling and lubricating </text><reference><text>sealing only <class-ref scheme="cpc">F04C27/00</class-ref>; lubrication only <class-ref scheme="cpc">F04C29/02</class-ref>; cooling <class-ref scheme="cpc">F02B47/02</class-ref>, <class-ref scheme="cpc">F02D21/00</class-ref>, <class-ref scheme="cpc">F02M25/00</class-ref></text></reference></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F04C29/0014" definition-exists="false" ipc-concordant="F04C29/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C29/0014</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>with control systems for the injection of the fluid</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F04C29/0021" definition-exists="false" ipc-concordant="F04C29/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2015-09-01" status="published"><classification-symbol>F04C29/0021</classification-symbol><class-title date-revised="2015-09-01"><title-part><CPC-specific-text><text>Systems for the equilibration of forces acting on the pump </text><reference><text>interstice adjustment other than by fluid pressure <class-ref scheme="cpc">F01C21/102</class-ref></text></reference></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F04C29/0028" definition-exists="false" ipc-concordant="F04C29/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C29/0028</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Internal leakage control</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F04C29/0035" definition-exists="true" ipc-concordant="F04C29/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C29/0035</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Equalization of pressure pulses </text><reference><text>silencing <class-ref scheme="cpc">F04C29/06</class-ref></text></reference></CPC-specific-text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F04C29/0042" definition-exists="false" ipc-concordant="F04C29/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C29/0042</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Driving elements, brakes, couplings, transmissions specially adapted for pumps </text><reference><text>brakes, couplings, transmissions <u>per se</u> <class-ref scheme="cpc">F16</class-ref>, <class-ref scheme="cpc">B60</class-ref></text></reference></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F04C29/005" definition-exists="false" ipc-concordant="F04C29/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C29/005</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Means for transmitting movement from the prime mover to driven parts of the pump, e.g. clutches, couplings, transmissions</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="F04C29/0057" definition-exists="true" ipc-concordant="F04C29/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C29/0057</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>for eccentric movement</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="F04C29/0064" definition-exists="false" ipc-concordant="F04C29/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C29/0064</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Magnetic couplings</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="F04C29/0071" definition-exists="false" ipc-concordant="F04C29/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C29/0071</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Couplings between rotors and input or output shafts acting by interengaging or mating parts, i.e. positive coupling of rotor and shaft</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F04C29/0078" definition-exists="true" ipc-concordant="F04C29/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C29/0078</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Fixing rotors on shafts, e.g. by clamping together hub and shaft</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F04C29/0085" definition-exists="false" ipc-concordant="F04C29/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C29/0085</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Prime movers</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F04C29/0092" definition-exists="true" ipc-concordant="F04C29/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C29/0092</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Removing solid or liquid contaminants from the gas under pumping, e.g. by filtering or deposition; Purging; Scrubbing; Cleaning</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F04C29/02" definition-exists="true" ipc-concordant="F04C29/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C29/02</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Lubrication </text><reference><text>of machines or engines in general <class-ref scheme="cpc">F01M</class-ref></text></reference></title-part><title-part><text>Lubricant separation </text><reference><text>separation in general <class-ref scheme="cpc">B01D</class-ref></text></reference></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F04C29/021" definition-exists="false" ipc-concordant="F04C29/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C29/021</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Control systems for the circulation of the lubricant</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F04C29/023" definition-exists="false" ipc-concordant="F04C29/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C29/023</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Lubricant distribution through a hollow driving shaft </text><reference><text><class-ref scheme="cpc">F04C29/025</class-ref> takes precedence</text></reference></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F04C29/025" definition-exists="false" ipc-concordant="F04C29/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C29/025</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>using a lubricant pump</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F04C29/026" definition-exists="false" ipc-concordant="F04C29/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C29/026</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Lubricant separation</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F04C29/028" definition-exists="false" ipc-concordant="F04C29/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C29/028</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Means for improving or restricting lubricant flow</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F04C29/04" definition-exists="true" ipc-concordant="F04C29/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C29/04</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Heating</text></title-part><title-part><text>Cooling </text><reference><text>of machines or engines in general <class-ref scheme="cpc">F01P</class-ref></text></reference></title-part><title-part><text>Heat insulation </text><reference><text>heat insulation in general <class-ref scheme="cpc">F16L59/00</class-ref></text></reference></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F04C29/042" definition-exists="false" ipc-concordant="F04C29/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C29/042</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>by injecting a fluid </text><reference><text>injection of fluid for sealing, cooling or lubrication <class-ref scheme="cpc">F04C29/0007</class-ref></text></reference></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F04C29/045" definition-exists="false" ipc-concordant="F04C29/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C29/045</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>of the electric motor in hermetic pumps</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F04C29/047" definition-exists="false" ipc-concordant="F04C29/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2016-05-01" status="published"><classification-symbol>F04C29/047</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Cooling of electronic devices installed inside the pump housing, e.g. inverters</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F04C29/06" definition-exists="true" ipc-concordant="F04C29/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2016-05-01" status="published"><classification-symbol>F04C29/06</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Silencing </text><reference><text>gas-flow silencers or exhaust apparatus for machines or engines in general <class-ref scheme="cpc">F01N</class-ref></text></reference></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F04C29/061" definition-exists="false" ipc-concordant="F04C29/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C29/061</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Silencers using overlapping frequencies, e.g. Helmholtz resonators</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F04C29/063" definition-exists="false" ipc-concordant="F04C29/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C29/063</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Sound absorbing materials</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F04C29/065" definition-exists="false" ipc-concordant="F04C29/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C29/065</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Noise dampening volumes, e.g. muffler chambers</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="F04C29/066" definition-exists="false" ipc-concordant="F04C29/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C29/066</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>with means to enclose the source of noise</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F04C29/068" definition-exists="false" ipc-concordant="F04C29/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C29/068</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>the silencing means being arranged inside the pump housing</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F04C29/12" definition-exists="false" ipc-concordant="F04C29/12" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C29/12</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F04C29/122" definition-exists="false" ipc-concordant="F04C29/12" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C29/122</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Arrangements for supercharging the working space </text><reference><text>similar arrangements for internal combustion engines <class-ref scheme="cpc">F02B33/00</class-ref>, <class-ref scheme="cpc">F02B37/00</class-ref></text></reference></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F04C29/124" definition-exists="false" ipc-concordant="F04C29/12" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C29/124</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>with inlet and outlet valves specially adapted for rotary or oscillating piston pumps</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="F04C29/126" definition-exists="false" ipc-concordant="F04C29/12" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C29/126</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>of the non-return type</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="F04C29/128" definition-exists="false" ipc-concordant="F04C29/12" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C29/128</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>of the elastic type, e.g. reed valves</text></CPC-specific-text></title-part></class-title></classification-item></classification-item></classification-item></classification-item></classification-item></classification-item>
<classification-item breakdown-code="true" not-allocatable="true" level="6" additional-only="true" sort-key="F04C210/00" date-revised="2013-01-01" status="published"><classification-symbol>F04C2210/00</classification-symbol>
<classification-item breakdown-code="true" not-allocatable="false" level="7" additional-only="true" sort-key="F04C210/00" definition-exists="true" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2210/00</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Fluid</text></title-part></class-title>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F04C210/10" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2210/10</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>working</text></title-part></class-title>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="F04C210/1005" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2210/1005</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Air</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="F04C210/1011" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2210/1011</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Amine</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="F04C210/1016" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2210/1016</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Blood</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="F04C210/1022" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2016-08-01" status="published"><classification-symbol>F04C2210/1022</classification-symbol><class-title date-revised="2016-08-01"><title-part><text>C<sub>3</sub>H<sub>m</sub>F<sub>n</sub></text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="F04C210/1027" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2210/1027</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>CO<sub>2</sub></text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="F04C210/1033" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2210/1033</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Concrete</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="F04C210/1038" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2210/1038</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Cooking oil</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="F04C210/1044" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2210/1044</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Fuel</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="F04C210/105" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2210/105</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Helium (He)</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="F04C210/1055" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2210/1055</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Hydrogen (H<sub>2</sub>)</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="F04C210/1061" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2210/1061</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>LPG</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="F04C210/1066" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2210/1066</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Nitrogen (N<sub>2</sub>)</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="F04C210/1072" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2210/1072</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Oxygen (O<sub>2</sub>)</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="F04C210/1077" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2210/1077</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Steam</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="F04C210/1083" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2210/1083</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Urea</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="F04C210/1088" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2210/1088</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Vegetable oil</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="F04C210/1094" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2210/1094</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Water</text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F04C210/12" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2210/12</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>auxiliary</text></title-part></class-title>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="F04C210/122" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2210/122</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Nitrogen (N<sub>2</sub>)</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="F04C210/124" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2210/124</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Sodium (Na)</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="F04C210/126" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2210/126</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Tin</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="F04C210/128" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2210/128</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Water</text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F04C210/14" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2210/14</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Lubricant</text></title-part></class-title>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="F04C210/142" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2210/142</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Ester</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="F04C210/145" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2210/145</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>PAG</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="F04C210/147" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2210/147</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Water</text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F04C210/20" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2210/20</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>liquid, i.e. incompressible</text></title-part></class-title>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="F04C210/201" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2210/201</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>DME</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="F04C210/203" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2210/203</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Fuel</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="F04C210/205" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2210/205</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Ink</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="F04C210/206" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2210/206</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Oil</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="F04C210/208" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2210/208</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Water</text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F04C210/22" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2210/22</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>gaseous, i.e. compressible</text></title-part></class-title>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="F04C210/221" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2210/221</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Air</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="F04C210/222" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2210/222</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Carbon dioxide (CO<sub>2</sub>)</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="F04C210/224" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2210/224</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Hydrogen (H<sub>2</sub>)</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="F04C210/225" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2210/225</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Nitrogen (N<sub>2</sub>)</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="F04C210/227" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2210/227</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Steam</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="F04C210/228" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2210/228</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Vapour</text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F04C210/24" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2210/24</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>mixed, e.g. two-phase fluid</text></title-part></class-title>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="F04C210/242" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2210/242</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Steam</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="F04C210/245" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2210/245</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Vapour</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="F04C210/247" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2210/247</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Water</text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F04C210/26" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2210/26</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Refrigerants with particular properties, e.g. HFC-134a</text></title-part></class-title>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="F04C210/261" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2210/261</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Carbon dioxide (CO<sub>2</sub>)</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="F04C210/263" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2210/263</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>HFO1234YF</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="F04C210/265" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2210/265</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Ammoniac (NH<sub>3</sub>)</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="F04C210/266" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2210/266</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Propane</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="F04C210/268" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2210/268</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>R32</text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F04C210/40" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2210/40</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Properties</text></title-part></class-title>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="F04C210/42" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2210/42</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>magnetic or ferromagnetic</text></title-part><title-part><text>Ferrofluids</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="F04C210/44" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2210/44</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Viscosity</text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F04C210/60" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2210/60</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Condition</text></title-part></class-title>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="F04C210/62" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2210/62</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Purity</text></title-part></class-title></classification-item></classification-item></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="7" additional-only="true" sort-key="F04C220/00" definition-exists="true" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2220/00</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Application</text></title-part></class-title>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F04C220/10" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2220/10</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Vacuum</text></title-part></class-title>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="F04C220/12" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2220/12</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Dry running</text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F04C220/20" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2220/20</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Pumps with means for separating and evacuating the gaseous phase</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F04C220/22" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2220/22</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>for very low temperatures, i.e. cryogenic</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F04C220/24" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2220/24</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>for metering throughflow</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F04C220/26" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2220/26</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>for step-by-step output movement</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F04C220/28" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2220/28</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>for pulsed fluid flow</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F04C220/30" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2220/30</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Use in a chemical vapor deposition [CVD] process or in a similar process</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F04C220/40" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2220/40</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Pumps with means for venting areas other than the working chamber, e.g. bearings, gear chambers, shaft seals</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F04C220/50" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2220/50</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Pumps with means for introducing gas under pressure for ballasting</text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="7" additional-only="true" sort-key="F04C230/00" definition-exists="true" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2230/00</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Manufacture</text></title-part></class-title><notes-and-warnings date-revised="2013-01-01"><note type="note"><note-paragraph>Manufacture comprises also treatment, assembly or disassembly methods, repairing, handling or the like.</note-paragraph></note></notes-and-warnings>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F04C230/10" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2230/10</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>by removing material</text></title-part></class-title>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="F04C230/101" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2230/101</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>by electrochemical methods</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="F04C230/102" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2230/102</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>by spark erosion methods</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="F04C230/103" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2230/103</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>using lasers</text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F04C230/20" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2230/20</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>essentially without removing material</text></title-part></class-title>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="F04C230/21" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2230/21</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>by casting</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="F04C230/22" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2230/22</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>by sintering</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="F04C230/23" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2230/23</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>by permanently joining parts together</text></title-part></class-title>
<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="F04C230/231" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2230/231</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>by welding</text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="F04C230/24" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2230/24</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>by extrusion</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="F04C230/25" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2230/25</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>by forging</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="F04C230/26" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2230/26</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>by rolling</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="F04C230/27" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2230/27</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>by hydroforming</text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F04C230/40" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2230/40</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Heat treatment</text></title-part></class-title>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="F04C230/41" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2230/41</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Hardening</text></title-part><title-part><text>Annealing</text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F04C230/60" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2230/60</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Assembly methods</text></title-part></class-title>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="F04C230/601" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2230/601</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Adjustment</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="F04C230/602" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2230/602</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Gap</text></title-part><title-part><text>Clearance</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="F04C230/603" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2230/603</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Centering</text></title-part><title-part><text>Aligning</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="F04C230/604" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2230/604</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Mounting devices for pumps or compressors</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="F04C230/605" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2230/605</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Balancing</text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F04C230/70" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2230/70</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Disassembly methods</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F04C230/80" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2230/80</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Repairing methods</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F04C230/90" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2230/90</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Improving properties of machine parts</text></title-part></class-title>
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<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="F04C230/92" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2230/92</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Surface treatment</text></title-part></class-title></classification-item></classification-item></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="7" additional-only="true" sort-key="F04C240/00" definition-exists="true" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2240/00</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Components</text></title-part></class-title>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F04C240/10" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2240/10</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Stators</text></title-part></class-title>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="F04C240/102" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2240/102</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>with means for discharging condensate or liquid separated from the gas pumped</text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F04C240/20" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2240/20</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Rotors</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F04C240/30" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2240/30</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Casings or housings</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F04C240/40" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2240/40</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Electric motor</text></title-part></class-title>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="F04C240/401" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2240/401</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Linear motor</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="F04C240/402" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2240/402</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Plurality of electronically synchronised motors</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="F04C240/403" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2240/403</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>with inverter for speed control</text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F04C240/45" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2240/45</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Hybrid prime mover</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F04C240/50" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2240/50</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Bearings</text></title-part></class-title>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="F04C240/51" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2240/51</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>for cantilever assemblies</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="F04C240/52" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2240/52</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>for assemblies with supports on both sides</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="F04C240/54" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2240/54</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Hydrostatic or hydrodynamic bearing assemblies specially adapted for rotary positive displacement pumps or compressors</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="F04C240/56" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2240/56</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Bearing bushings or details thereof</text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F04C240/60" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2240/60</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Shafts</text></title-part></class-title>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="F04C240/601" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2240/601</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Shaft flexion</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="F04C240/603" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2240/603</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>with internal channels for fluid distribution, e.g. hollow shaft</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="F04C240/605" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2240/605</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Shaft sleeves or details thereof</text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F04C240/70" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2240/70</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Use of multiplicity of similar components</text></title-part><title-part><text>Modular construction</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F04C240/80" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2240/80</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Other components</text></title-part></class-title>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="F04C240/801" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2240/801</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Wear plates</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="F04C240/802" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2240/802</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Liners</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="F04C240/803" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2240/803</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Electric connectors or cables</text></title-part><title-part><text>Fittings therefor</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="F04C240/804" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2240/804</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Accumulators for refrigerant circuits</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="F04C240/805" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2240/805</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Fastening means, e.g. bolts</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="F04C240/806" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2240/806</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Pipes for fluids</text></title-part><title-part><text>Fittings therefor</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="F04C240/807" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2240/807</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Balance weight, counterweight</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="F04C240/808" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2240/808</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Electronic circuits (e.g. inverters) installed inside the machine</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="F04C240/809" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2240/809</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Lubricant sump</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="F04C240/81" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2240/81</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Sensor, e.g. electronic sensor for control or monitoring</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="F04C240/811" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2240/811</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Actuator for control, e.g. pneumatic, hydraulic, electric</text></title-part></class-title></classification-item></classification-item></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="7" additional-only="true" sort-key="F04C250/00" definition-exists="true" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2250/00</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Geometry</text></title-part></class-title>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F04C250/10" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2250/10</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>of the inlet or outlet</text></title-part></class-title>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="F04C250/101" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2250/101</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>of the inlet</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="F04C250/102" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2250/102</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>of the outlet</text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F04C250/20" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2250/20</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>of the rotor</text></title-part></class-title>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="F04C250/201" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2250/201</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>conical shape</text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F04C250/30" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2250/30</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>of the stator</text></title-part></class-title>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="F04C250/301" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2250/301</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>compression chamber profile defined by a mathematical expression or by parameters</text></title-part></class-title></classification-item></classification-item></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="7" additional-only="true" sort-key="F04C270/00" definition-exists="true" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2270/00</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Control</text></title-part><title-part><text>Monitoring or safety arrangements</text></title-part></class-title>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F04C270/01" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2270/01</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Load</text></title-part></class-title>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="F04C270/015" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2270/015</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Controlled or regulated</text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F04C270/02" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2270/02</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Power</text></title-part></class-title>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="F04C270/025" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2270/025</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Controlled or regulated</text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F04C270/03" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2270/03</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Torque</text></title-part></class-title>
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<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="F04C270/0445" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2270/0445</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Controlled or regulated</text></title-part></class-title></classification-item></classification-item></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="F04C270/051" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2270/051</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Controlled or regulated</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="F04C270/052" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2270/052</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>angular</text></title-part></class-title>
<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="F04C270/0525" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2270/0525</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Controlled or regulated</text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="F04C270/054" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2270/054</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>linear</text></title-part></class-title>
<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="F04C270/0545" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2270/0545</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Controlled or regulated</text></title-part></class-title></classification-item></classification-item></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F04C270/06" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2270/06</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Acceleration</text></title-part></class-title>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="F04C270/065" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2270/065</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Controlled or regulated</text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="F04C270/075" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2270/075</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Controlled or regulated</text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F04C270/09" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2270/09</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Electric current frequency</text></title-part></class-title>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="F04C270/095" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2270/095</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Controlled or regulated</text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F04C270/10" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2270/10</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Voltage</text></title-part></class-title>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="F04C270/105" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2270/105</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Controlled or regulated</text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F04C270/11" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2270/11</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Magnetic flux</text></title-part></class-title>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="F04C270/115" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2270/115</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Controlled or regulated</text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F04C270/12" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2270/12</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Vibration</text></title-part></class-title>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F04C270/13" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2270/13</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Noise</text></title-part></class-title>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="F04C270/135" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2270/135</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Controlled or regulated</text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F04C270/14" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2270/14</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Pulsations</text></title-part></class-title>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="F04C270/145" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2270/145</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Controlled or regulated</text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F04C270/15" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2270/15</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Resonance</text></title-part></class-title>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="F04C270/155" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2270/155</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Controlled or regulated</text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F04C270/16" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2270/16</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Wear</text></title-part></class-title>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="F04C270/165" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2270/165</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Controlled or regulated</text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F04C270/17" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2270/17</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Tolerance</text></title-part><title-part><text>Play</text></title-part><title-part><text>Gap</text></title-part></class-title>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="F04C270/175" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2270/175</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Controlled or regulated</text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F04C270/18" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2270/18</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Pressure</text></title-part></class-title>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="F04C270/185" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2270/185</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Controlled or regulated</text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F04C270/19" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2270/19</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Temperature</text></title-part></class-title>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="F04C270/195" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2270/195</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Controlled or regulated</text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F04C270/20" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2270/20</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Flow</text></title-part></class-title>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="F04C270/205" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2270/205</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Controlled or regulated</text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F04C270/21" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2270/21</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Pressure difference</text></title-part></class-title>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="F04C270/215" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2270/215</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Controlled or regulated</text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F04C270/22" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2270/22</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Temperature difference</text></title-part></class-title>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="F04C270/225" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2270/225</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Controlled or regulated</text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F04C270/23" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2270/23</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Working cycle timing control</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F04C270/24" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2270/24</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Level of liquid, e.g. lubricant or cooling liquid</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F04C270/40" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2270/40</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Conditions across a pump or machine</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F04C270/42" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2270/42</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Conditions at the inlet of a pump or machine</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F04C270/44" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2270/44</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Conditions at the outlet of a pump or machine</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F04C270/46" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2270/46</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Conditions in the working chamber</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F04C270/48" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2270/48</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Conditions of a reservoir linked to a pump or machine</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F04C270/50" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2270/50</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Conditions before a throttle</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F04C270/52" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2270/52</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Conditions after a throttle</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F04C270/54" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2270/54</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Conditions in a control cylinder/piston unit</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F04C270/56" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2270/56</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Number of pump/machine units in operation</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F04C270/58" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2270/58</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Valve parameters</text></title-part></class-title>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="F04C270/585" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2270/585</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Controlled or regulated</text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F04C270/60" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2270/60</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Prime mover parameters</text></title-part></class-title>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="F04C270/605" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2270/605</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Controlled or regulated</text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F04C270/70" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2270/70</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Safety, emergency conditions or requirements</text></title-part></class-title>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="F04C270/701" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2270/701</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Cold start</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="F04C270/72" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2270/72</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>preventing reverse rotation</text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F04C270/78" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2270/78</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Warnings</text></title-part></class-title>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="F04C270/782" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2270/782</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Sound</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="F04C270/784" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2270/784</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Light</text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F04C270/80" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2270/80</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Diagnostics</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F04C270/86" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2270/86</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Detection</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F04C270/90" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2270/90</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Remote control, e.g. wireless, via LAN, by radio, or by a wired connection from a central computer</text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="7" additional-only="true" sort-key="F04C280/00" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2280/00</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Arrangements for preventing or removing deposits or corrosion</text></title-part></class-title>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F04C280/02" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2280/02</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Preventing solid deposits in pumps, e.g. in vacuum pumps with chemical vapour deposition [CVD] processes</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F04C280/04" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04C2280/04</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Preventing corrosion</text></title-part></class-title></classification-item></classification-item></classification-item></classification-item></class-scheme>