blabla/PATSTAT/CPC_data/CPCSchemeXML202302/cpc-scheme-F04D.xml

<?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="F04D" definition-exists="true" date-revised="2018-08-01" status="published"><classification-symbol>F04D</classification-symbol><class-title date-revised="2018-08-01"><title-part><text>NON-POSITIVE-DISPLACEMENT PUMPS </text><reference><text>engine fuel-injection pumps <class-ref scheme="cpc">F02M</class-ref>; ion pumps <class-ref scheme="cpc">H01J41/12</class-ref>; electrodynamic pumps <class-ref scheme="cpc">H02K44/02</class-ref></text></reference></title-part></class-title><notes-and-warnings date-revised="2013-01-01"><note type="note"><note-paragraph>This subclass <u>covers</u> non-positive-displacement pumps for liquids, for elastic fluids, or for liquids and elastic fluids whether rotary or not having pure rotation.</note-paragraph><note-paragraph>This subclass <u>does not cover</u> combinations of non-positive-displacement pumps with other pumps, which are covered by subclass <class-ref scheme="cpc">F04B</class-ref>, except that the use of such other pumps for priming or boosting non-positive-displacement is covered by this subclass.</note-paragraph><note-paragraph>Attention is drawn to the Notes preceding class <class-ref scheme="cpc">F01</class-ref>, especially as regards the definition of &quot;pump&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="F04D1/00" date-revised="2013-01-01" status="published"><classification-symbol>F04D1/00</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Pumping liquids, or liquids and elastic fluids, by rotary pumps </text><reference><text>pumping liquids and elastic fluids at the same time <class-ref scheme="cpc">F04D31/00</class-ref></text></reference></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="7" additional-only="false" sort-key="F04D1/00" definition-exists="true" ipc-concordant="F04D1/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D1/00</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Radial-flow pumps, e.g. centrifugal pumps</text></title-part><title-part><text>Helico-centrifugal pumps </text><reference><text>adapted for pumping specific fluids <class-ref scheme="cpc">F04D7/00</class-ref>; priming or boosting <class-ref scheme="cpc">F04D9/00</class-ref></text></reference></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F04D1/003" definition-exists="false" ipc-concordant="F04D1/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D1/003</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Having contrarotating 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="F04D1/006" definition-exists="false" ipc-concordant="F04D1/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D1/006</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>double suction pumps</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="F04D1/02" definition-exists="false" ipc-concordant="F04D1/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D1/02</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>having non-centrifugal stages, e.g. centripetal</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F04D1/025" definition-exists="false" ipc-concordant="F04D1/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2017-05-01" status="published"><classification-symbol>F04D1/025</classification-symbol><class-title date-revised="2017-05-01"><title-part><CPC-specific-text><text>Comprising axial and radial stages</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="F04D1/04" definition-exists="false" ipc-concordant="F04D1/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D1/04</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Helico-centrifugal pumps</text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F04D1/06" definition-exists="false" ipc-concordant="F04D1/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D1/06</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Multi-stage pumps </text><reference><text><class-ref scheme="cpc">F04D1/02</class-ref>, <class-ref scheme="cpc">F04D13/10</class-ref> take precedence</text></reference></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F04D1/063" definition-exists="false" ipc-concordant="F04D1/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D1/063</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>of the vertically split casing type</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="F04D1/066" definition-exists="false" ipc-concordant="F04D1/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D1/066</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>the casing consisting of a plurality of annuli bolted together</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="F04D1/08" definition-exists="false" ipc-concordant="F04D1/08" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D1/08</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>the stages being situated concentrically</text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F04D1/10" definition-exists="false" ipc-concordant="F04D1/10" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D1/10</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>with means for changing the flow-path through the stages, e.g. series-parallel, e.g. side loads</text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F04D1/12" definition-exists="false" ipc-concordant="F04D1/12" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D1/12</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Pumps with scoops or like paring members protruding in the fluid circulating in a bowl</text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F04D1/14" definition-exists="false" ipc-concordant="F04D1/14" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D1/14</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Pumps raising fluids by centrifugal force within a conical rotary bowl with vertical axis</text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="7" additional-only="false" sort-key="F04D3/00" definition-exists="true" ipc-concordant="F04D3/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D3/00</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Axial-flow pumps </text><reference><text>priming or boosting <class-ref scheme="cpc">F04D9/00</class-ref></text></reference></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F04D3/005" definition-exists="false" ipc-concordant="F04D3/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D3/005</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>with a conventional single stage rotor</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="F04D3/02" definition-exists="false" ipc-concordant="F04D3/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D3/02</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>of screw type</text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="7" additional-only="false" sort-key="F04D5/00" definition-exists="true" ipc-concordant="F04D5/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D5/00</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Pumps with circumferential or transverse flow </text><CPC-specific-text><reference><text>control thereof <class-ref scheme="cpc">F04D15/005</class-ref></text></reference></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F04D5/001" definition-exists="false" ipc-concordant="F04D5/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D5/001</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Shear force pumps</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="F04D5/002" definition-exists="false" ipc-concordant="F04D5/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D5/002</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Regenerative pumps </text><reference><text>for elastic fluids <class-ref scheme="cpc">F04D23/008</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="F04D5/003" definition-exists="false" ipc-concordant="F04D5/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D5/003</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>of multistage type</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="F04D5/005" definition-exists="false" ipc-concordant="F04D5/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D5/005</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>the stages being radially offset</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="F04D5/006" definition-exists="false" ipc-concordant="F04D5/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D5/006</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>the stages being axially offset</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="F04D5/007" definition-exists="false" ipc-concordant="F04D5/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D5/007</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Details of the inlet or outlet</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="F04D5/008" definition-exists="false" ipc-concordant="F04D5/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D5/008</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Details of the stator, e.g. channel shape</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="F04D7/00" definition-exists="true" ipc-concordant="F04D7/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D7/00</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts </text><reference><text><class-ref scheme="cpc">F04D11/005</class-ref>, <class-ref scheme="cpc">F04D29/22</class-ref> take precedence</text></reference></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F04D7/02" definition-exists="false" ipc-concordant="F04D7/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D7/02</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>of centrifugal type</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F04D7/04" definition-exists="false" ipc-concordant="F04D7/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D7/04</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>the fluids being viscous or non-homogenous</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="F04D7/045" definition-exists="false" ipc-concordant="F04D7/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D7/045</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>with means for comminuting, mixing stirring or otherwise treating</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="F04D7/06" definition-exists="false" ipc-concordant="F04D7/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D7/06</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>the fluids being hot or corrosive, e.g. liquid metals</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="F04D7/065" definition-exists="false" ipc-concordant="F04D7/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D7/065</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>for liquid metal</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="F04D7/08" definition-exists="false" ipc-concordant="F04D7/08" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D7/08</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>the fluids being radioactive</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="F04D9/00" definition-exists="true" ipc-concordant="F04D9/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D9/00</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Priming</text></title-part><title-part><text>Preventing vapour lock</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F04D9/001" definition-exists="false" ipc-concordant="F04D9/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D9/001</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Preventing vapour lock </text><reference><text><class-ref scheme="cpc">F04D9/041</class-ref> takes precedence</text></reference></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F04D9/002" definition-exists="false" ipc-concordant="F04D9/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D9/002</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>by means in the very pump </text><reference><text><class-ref scheme="cpc">F04D9/041</class-ref> takes precedence</text></reference></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="F04D9/003" definition-exists="false" ipc-concordant="F04D9/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D9/003</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>separating and removing the vapour</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="F04D9/004" definition-exists="false" ipc-concordant="F04D9/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D9/004</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Priming of not self-priming pumps</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F04D9/005" definition-exists="false" ipc-concordant="F04D9/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D9/005</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>by adducting or recycling liquid </text><reference><text><class-ref scheme="cpc">F04D9/006</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="F04D9/006" definition-exists="false" ipc-concordant="F04D9/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D9/006</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>by venting gas or using gas valves</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="F04D9/007" definition-exists="false" ipc-concordant="F04D9/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D9/007</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Preventing loss of prime, siphon breakers </text><reference><text>stopping of pumps <class-ref scheme="cpc">F04D15/02</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="F04D9/008" definition-exists="false" ipc-concordant="F04D9/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D9/008</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>by means in the suction mouth, e.g. foot valves</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="F04D9/02" definition-exists="false" ipc-concordant="F04D9/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D9/02</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Self-priming pumps</text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F04D9/04" definition-exists="false" ipc-concordant="F04D9/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2017-08-01" status="published"><classification-symbol>F04D9/04</classification-symbol><class-title date-revised="2017-08-01"><title-part><text>using priming pumps</text></title-part><title-part><text>using booster pumps to prevent vapour-lock</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F04D9/041" definition-exists="false" ipc-concordant="F04D9/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D9/041</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>the priming pump having evacuating action </text><reference><text><class-ref scheme="cpc">F04D9/043</class-ref> and <class-ref scheme="cpc">F04D9/06</class-ref> take precedence</text></reference></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="F04D9/042" definition-exists="false" ipc-concordant="F04D9/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D9/042</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>and means for rendering its in operative</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="F04D9/043" definition-exists="false" ipc-concordant="F04D9/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D9/043</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>the priming pump being hand operated or of the reciprocating type</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="F04D9/044" definition-exists="false" ipc-concordant="F04D9/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D9/044</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Means for rendering the priming pump inoperative</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="F04D9/045" definition-exists="false" ipc-concordant="F04D9/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D9/045</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>the means being liquid level sensors</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="F04D9/046" definition-exists="false" ipc-concordant="F04D9/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D9/046</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>the means being floats</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="F04D9/047" definition-exists="false" ipc-concordant="F04D9/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D9/047</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>the means being flow sensors</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="F04D9/048" definition-exists="false" ipc-concordant="F04D9/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D9/048</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>the means being outlet pressure sensors</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="F04D9/049" definition-exists="false" ipc-concordant="F04D9/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D9/049</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>by operator interventions</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="F04D9/06" definition-exists="false" ipc-concordant="F04D9/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D9/06</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>of jet type</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="F04D9/065" definition-exists="false" ipc-concordant="F04D9/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D9/065</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>the driving fluid being a gas or vapour, e.g. exhaust of a combustion engine</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="F04D11/00" definition-exists="true" ipc-concordant="F04D11/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D11/00</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Other rotary non-positive-displacement pumps </text><reference><text>pumping installations or systems <class-ref scheme="cpc">F04D13/00</class-ref></text></reference></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F04D11/005" definition-exists="false" ipc-concordant="F04D11/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D11/005</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Swash-type impeller pumps</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="F04D13/00" definition-exists="true" ipc-concordant="F04D13/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D13/00</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Pumping installations or systems </text><reference><text>controlling <class-ref scheme="cpc">F04D15/00</class-ref></text></reference></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F04D13/02" definition-exists="false" ipc-concordant="F04D13/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D13/02</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Units comprising pumps and their driving means </text><reference><text>predominant aspects of the driving means, <u>see</u> the relevant classes for such means</text></reference></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F04D13/021" definition-exists="false" ipc-concordant="F04D13/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D13/021</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>containing a coupling</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="F04D13/022" definition-exists="false" ipc-concordant="F04D13/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D13/022</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>a coupling allowing slip, e.g. torque converter</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="F04D13/023" definition-exists="false" ipc-concordant="F04D13/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D13/023</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>for reducing start torque</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="F04D13/024" definition-exists="false" ipc-concordant="F04D13/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D13/024</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>a magnetic coupling</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="F04D13/025" definition-exists="false" ipc-concordant="F04D13/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D13/025</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Details of the can separating the pump and drive area</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="F04D13/026" definition-exists="false" ipc-concordant="F04D13/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D13/026</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Details of the bearings</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="F04D13/027" definition-exists="false" ipc-concordant="F04D13/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D13/027</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Details of the magnetic circuit</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="F04D13/028" definition-exists="false" ipc-concordant="F04D13/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D13/028</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>the driving means being a planetary gear</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="F04D13/04" definition-exists="false" ipc-concordant="F04D13/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D13/04</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>the pump being fluid driven</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="F04D13/043" definition-exists="false" ipc-concordant="F04D13/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D13/043</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>the pump wheel carrying the fluid driving means</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="F04D13/046" definition-exists="false" ipc-concordant="F04D13/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D13/046</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>the fluid driving means being a hydraulic motor of the positive displacement type</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="F04D13/06" definition-exists="false" ipc-concordant="F04D13/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D13/06</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>the pump being electrically driven</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="F04D13/0606" definition-exists="false" ipc-concordant="F04D13/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D13/0606</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Canned motor pumps</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="F04D13/0613" definition-exists="false" ipc-concordant="F04D13/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D13/0613</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Special connection between the rotor compartments</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="F04D13/062" definition-exists="false" ipc-concordant="F04D13/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D13/062</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>pressure compensation between motor- and pump- compartment</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="F04D13/0626" definition-exists="false" ipc-concordant="F04D13/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D13/0626</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Details of the can</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="F04D13/0633" definition-exists="false" ipc-concordant="F04D13/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D13/0633</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Details of the bearings</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="F04D13/064" definition-exists="false" ipc-concordant="F04D13/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D13/064</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Details of the magnetic circuit</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="F04D13/0646" definition-exists="false" ipc-concordant="F04D13/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D13/0646</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>the hollow pump or motor shaft being the conduit for the working fluid</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="F04D13/0653" definition-exists="false" ipc-concordant="F04D13/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D13/0653</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>the motor being flooded</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="F04D13/066" definition-exists="false" ipc-concordant="F04D13/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D13/066</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Floating-units</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="F04D13/0666" definition-exists="false" ipc-concordant="F04D13/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D13/0666</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>the motor being of the plane gap 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="F04D13/0673" definition-exists="false" ipc-concordant="F04D13/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D13/0673</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>the motor being of the inside-out 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="F04D13/068" definition-exists="false" ipc-concordant="F04D13/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D13/068</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Battery powered</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="F04D13/0686" definition-exists="false" ipc-concordant="F04D13/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D13/0686</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Mechanical details of the pump control unit </text><reference><text>pump control <class-ref scheme="cpc">F04D15/00</class-ref></text></reference></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="F04D13/0693" definition-exists="false" ipc-concordant="F04D13/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D13/0693</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Details or arrangements of the wiring</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="F04D13/08" definition-exists="false" ipc-concordant="F04D13/08" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D13/08</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>for submerged use</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="F04D13/083" definition-exists="false" ipc-concordant="F04D13/08" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D13/083</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>and protected by a gas-bell</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="F04D13/086" definition-exists="false" ipc-concordant="F04D13/08" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D13/086</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>the pump and drive motor are both submerged</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="F04D13/10" definition-exists="false" ipc-concordant="F04D13/10" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D13/10</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>adapted for use in mining bore holes</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="F04D13/12" definition-exists="false" ipc-concordant="F04D13/12" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D13/12</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Combinations of two or more pumps </text><reference><text>combinations with priming pumps or booster pumps to counteract vapour-lock <class-ref scheme="cpc">F04D9/04</class-ref></text></reference></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F04D13/14" definition-exists="false" ipc-concordant="F04D13/14" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D13/14</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>the pumps being all of centrifugal type </text><CPC-specific-text><reference><text>deviation valves <class-ref scheme="cpc">F04D15/0016</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="F04D13/16" definition-exists="false" ipc-concordant="F04D13/16" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D13/16</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>with storage reservoirs</text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="7" additional-only="false" sort-key="F04D15/00" definition-exists="true" ipc-concordant="F04D15/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D15/00</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Control, e.g. regulation, of pumps, pumping installations or systems</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F04D15/0005" definition-exists="false" ipc-concordant="F04D15/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D15/0005</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>by using valves</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F04D15/0011" definition-exists="false" ipc-concordant="F04D15/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D15/0011</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>by-pass valves</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="F04D15/0016" definition-exists="false" ipc-concordant="F04D15/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D15/0016</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>mixing-reversing- or deviation valves</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="F04D15/0022" definition-exists="false" ipc-concordant="F04D15/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D15/0022</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>throttling valves or valves varying the pump inlet opening or the outlet opening</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="F04D15/0027" definition-exists="false" ipc-concordant="F04D15/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D15/0027</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Varying behaviour or the very pump </text><reference><text><class-ref scheme="cpc">F04D15/0055</class-ref> and <class-ref scheme="cpc">F04D29/46</class-ref> take precedence</text></reference></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F04D15/0033" definition-exists="false" ipc-concordant="F04D15/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D15/0033</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>By-passing by increasing clearance between impeller and its casing</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="F04D15/0038" definition-exists="false" ipc-concordant="F04D15/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D15/0038</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>by varying the effective cross-sectional area of flow through the rotor</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="F04D15/0044" definition-exists="false" ipc-concordant="F04D15/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D15/0044</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>by introducing a gas</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="F04D15/005" definition-exists="false" ipc-concordant="F04D15/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D15/005</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>the pumps being of the circumferential flow type</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="F04D15/0055" definition-exists="false" ipc-concordant="F04D15/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D15/0055</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Rotors with adjustable blades</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F04D15/0061" definition-exists="false" ipc-concordant="F04D15/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D15/0061</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>responsive to temperature</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="F04D15/0066" definition-exists="false" ipc-concordant="F04D15/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D15/0066</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>by changing the speed, e.g. of the driving engine</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="F04D15/0072" definition-exists="false" ipc-concordant="F04D15/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D15/0072</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Installation or systems with two or more pumps, wherein the flow path through the stages can be changed, e.g. series-parallel</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="F04D15/0077" definition-exists="false" ipc-concordant="F04D15/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D15/0077</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Safety measures </text><reference><text><class-ref scheme="cpc">F04D15/02</class-ref> takes precedence</text></reference></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F04D15/0083" definition-exists="false" ipc-concordant="F04D15/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D15/0083</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Protection against sudden pressure change, e.g. check valves</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="F04D15/0088" definition-exists="false" ipc-concordant="F04D15/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D15/0088</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Testing machines</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="F04D15/0094" definition-exists="false" ipc-concordant="F04D15/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D15/0094</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Indicators of rotational movement</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="F04D15/02" definition-exists="false" ipc-concordant="F04D15/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D15/02</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Stopping of pumps, or operating valves, on occurrence of unwanted conditions</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F04D15/0209" definition-exists="false" ipc-concordant="F04D15/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D15/0209</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>responsive to a condition of the working fluid </text><reference><text><class-ref scheme="cpc">F04D15/029</class-ref> takes precedence</text></reference></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="F04D15/0218" definition-exists="false" ipc-concordant="F04D15/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D15/0218</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>the condition being a liquid level or a lack of liquid supply</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="F04D15/0227" definition-exists="false" ipc-concordant="F04D15/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D15/0227</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Lack of liquid level being detected using a flow transducer</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="F04D15/0236" definition-exists="false" ipc-concordant="F04D15/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D15/0236</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Lack of liquid level being detected by analysing the parameters of the electric drive, e.g. current or power consumption</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="F04D15/0245" definition-exists="false" ipc-concordant="F04D15/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D15/0245</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>responsive to a condition of the pump</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="F04D15/0254" definition-exists="false" ipc-concordant="F04D15/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D15/0254</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>the condition being speed or load</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="F04D15/0263" definition-exists="false" ipc-concordant="F04D15/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D15/0263</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>the condition being temperature, ingress of humidity or leakage</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="F04D15/0272" definition-exists="false" ipc-concordant="F04D15/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D15/0272</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>the condition being wear or a position</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="F04D15/0281" definition-exists="false" ipc-concordant="F04D15/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D15/0281</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>responsive to a condition not otherwise provided for</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="F04D15/029" definition-exists="false" ipc-concordant="F04D15/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D15/029</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>for pumps operating in parallel</text></CPC-specific-text></title-part></class-title></classification-item></classification-item></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="true" level="6" additional-only="false" sort-key="F04D17/00" date-revised="2013-01-01" status="published"><classification-symbol>F04D17/00</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Pumping elastic fluids by rotary pumps</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="7" additional-only="false" sort-key="F04D17/00" definition-exists="true" ipc-concordant="F04D17/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2016-08-01" status="published"><classification-symbol>F04D17/00</classification-symbol><class-title date-revised="2016-08-01"><title-part><text>Radial-flow pumps, e.g. centrifugal pumps</text></title-part><title-part><text>Helico-centrifugal pumps </text><reference><text><class-ref scheme="cpc">F04D21/00</class-ref> takes precedence</text></reference></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F04D17/02" definition-exists="false" ipc-concordant="F04D17/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D17/02</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>having non-centrifugal stages, e.g. centripetal</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F04D17/025" definition-exists="false" ipc-concordant="F04D17/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D17/025</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>comprising axial flow and radial flow stages</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="F04D17/04" definition-exists="false" ipc-concordant="F04D17/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D17/04</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>of transverse-flow 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="F04D17/06" definition-exists="false" ipc-concordant="F04D17/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D17/06</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Helico-centrifugal pumps</text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F04D17/08" definition-exists="false" ipc-concordant="F04D17/08" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D17/08</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Centrifugal pumps</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F04D17/10" definition-exists="false" ipc-concordant="F04D17/10" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D17/10</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>for compressing or evacuating</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="F04D17/105" definition-exists="false" ipc-concordant="F04D17/10" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D17/105</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>with double suction</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="F04D17/12" definition-exists="false" ipc-concordant="F04D17/12" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D17/12</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Multi-stage pumps</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="F04D17/122" definition-exists="false" ipc-concordant="F04D17/12" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D17/122</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>the individual rotor discs being, one for each stage, on a common shaft and axially spaced, e.g. conventional centrifugal multi- stage compressors</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="12" additional-only="false" sort-key="F04D17/125" definition-exists="false" ipc-concordant="F04D17/12" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D17/125</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>the casing being vertically split</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="F04D17/127" definition-exists="false" ipc-concordant="F04D17/12" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D17/127</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>with radially spaced stages, e.g. for contrarotating type</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="F04D17/14" definition-exists="false" ipc-concordant="F04D17/14" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D17/14</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>with means for changing the flow-path through the stages, e.g. series-parallel, e.g. side-loads, </text><reference><text>surge control <class-ref scheme="cpc">F04D27/02</class-ref></text></reference></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="F04D17/16" definition-exists="false" ipc-concordant="F04D17/16" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D17/16</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>for displacing without appreciable compression</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="F04D17/161" definition-exists="false" ipc-concordant="F04D17/16" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D17/161</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Shear force pumps</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="F04D17/162" definition-exists="false" ipc-concordant="F04D17/16" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D17/162</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Double suction pumps</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="F04D17/164" definition-exists="false" ipc-concordant="F04D17/16" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D17/164</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Multi-stage fans, e.g. for vacuum cleaners</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="F04D17/165" definition-exists="false" ipc-concordant="F04D17/16" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D17/165</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Axial entry and discharge</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="F04D17/167" definition-exists="false" ipc-concordant="F04D17/16" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2016-08-01" status="published"><classification-symbol>F04D17/167</classification-symbol><class-title date-revised="2016-08-01"><title-part><CPC-specific-text><text>Operating by means of fibrous or porous elements </text><reference><text>suction filters <class-ref scheme="cpc">F04D29/701</class-ref></text></reference><text>, e.g. with sponge rotors</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="F04D17/168" definition-exists="false" ipc-concordant="F04D17/16" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D17/168</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Pumps specially adapted to produce a vacuum</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="F04D17/18" definition-exists="false" ipc-concordant="F04D17/18" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2016-08-01" status="published"><classification-symbol>F04D17/18</classification-symbol><class-title date-revised="2016-08-01"><title-part><text>characterised by use of centrifugal force of liquids entrained in pumps </text><CPC-specific-text><reference><text>, e.g. by means of an auxiliary liquid; fluid ring compressors <class-ref scheme="cpc">F04C19/00</class-ref></text></reference></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="F04D19/00" definition-exists="true" ipc-concordant="F04D19/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2015-11-01" status="published"><classification-symbol>F04D19/00</classification-symbol><class-title date-revised="2015-11-01"><title-part><text>Axial-flow pumps </text><reference><text><class-ref scheme="cpc">F04D21/00</class-ref> takes precedence; </text><CPC-specific-text><text>pump comprising axial flow and radial flow stages <class-ref scheme="cpc">F04D17/025</class-ref></text></CPC-specific-text></reference></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F04D19/002" definition-exists="false" ipc-concordant="F04D19/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D19/002</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Axial flow fans</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F04D19/005" definition-exists="false" ipc-concordant="F04D19/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D19/005</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>reversible fans</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="F04D19/007" definition-exists="false" ipc-concordant="F04D19/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D19/007</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>multistage fans</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="F04D19/02" definition-exists="false" ipc-concordant="F04D19/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D19/02</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Multi-stage pumps</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F04D19/022" definition-exists="false" ipc-concordant="F04D19/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D19/022</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>with concentric rows of vanes;</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="F04D19/024" definition-exists="false" ipc-concordant="F04D19/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D19/024</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>with contrarotating 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="F04D19/026" definition-exists="false" ipc-concordant="F04D19/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D19/026</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>with a plurality of shafts rotating at different speeds </text><reference><text><class-ref scheme="cpc">F04D19/022</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="F04D19/028" definition-exists="false" ipc-concordant="F04D19/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D19/028</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Layout of fluid flow through the stages</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="F04D19/04" definition-exists="false" ipc-concordant="F04D19/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D19/04</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>specially adapted to the production of a high vacuum, e.g. molecular pumps</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="F04D19/042" definition-exists="false" ipc-concordant="F04D19/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D19/042</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Turbomolecular vacuum pumps</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="F04D19/044" definition-exists="false" ipc-concordant="F04D19/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D19/044</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Holweck-type pumps</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="F04D19/046" definition-exists="false" ipc-concordant="F04D19/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D19/046</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Combinations of two or more different types of pumps</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="F04D19/048" definition-exists="false" ipc-concordant="F04D19/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D19/048</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>comprising magnetic bearings</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="F04D21/00" definition-exists="true" ipc-concordant="F04D21/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D21/00</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Pump involving supersonic speed of pumped fluids</text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="7" additional-only="false" sort-key="F04D23/00" definition-exists="true" ipc-concordant="F04D23/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D23/00</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Other rotary non-positive-displacement pumps </text><reference><text>pumping installations or systems <class-ref scheme="cpc">F04D25/00</class-ref></text></reference></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F04D23/001" definition-exists="false" ipc-concordant="F04D23/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D23/001</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Pumps adapted for conveying materials or for handling specific elastic fluids</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F04D23/003" definition-exists="false" ipc-concordant="F04D23/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D23/003</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>of radial-flow type</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="F04D23/005" definition-exists="false" ipc-concordant="F04D23/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D23/005</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>of axial-flow type</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="F04D23/006" definition-exists="false" ipc-concordant="F04D23/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D23/006</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Creating a pulsating flow</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="F04D23/008" definition-exists="false" ipc-concordant="F04D23/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D23/008</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Regenerative pumps </text><reference><text>for liquids or for liquids and elastic fluids <class-ref scheme="cpc">F04D5/002</class-ref></text></reference></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="F04D25/00" definition-exists="true" ipc-concordant="F04D25/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D25/00</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Pumping installations or systems </text><reference><text>controlling <class-ref scheme="cpc">F04D27/00</class-ref></text></reference></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F04D25/02" definition-exists="false" ipc-concordant="F04D25/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D25/02</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Units comprising pumps and their driving means </text><reference><text>predominant aspect of the driving means, <u>see</u> the relevant classes for such means</text></reference></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F04D25/022" definition-exists="false" ipc-concordant="F04D25/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D25/022</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>comprising a yielding coupling, e.g. hydraulic </text><reference><text>a magnetic coupling <class-ref scheme="cpc">F04D25/026</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="F04D25/024" definition-exists="false" ipc-concordant="F04D25/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D25/024</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>the driving means being assisted by a power recovery turbine</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="F04D25/026" definition-exists="false" ipc-concordant="F04D25/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D25/026</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>with a magnetic coupling</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="F04D25/028" definition-exists="false" ipc-concordant="F04D25/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D25/028</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>the driving means being a planetary gear</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="F04D25/04" definition-exists="false" ipc-concordant="F04D25/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D25/04</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>the pump being fluid-driven </text><CPC-specific-text><reference><text>pumps driven by exhaust gases <class-ref scheme="cpc">F02B37/00</class-ref>, <class-ref scheme="cpc">F02B39/00</class-ref>; turbochargers <class-ref scheme="cpc">F02C6/12</class-ref></text></reference></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="F04D25/045" definition-exists="false" ipc-concordant="F04D25/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D25/045</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>the pump wheel carrying the fluid driving means, e.g. turbine blades</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="F04D25/06" definition-exists="false" ipc-concordant="F04D25/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D25/06</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>the pump being electrically driven </text><reference><text><class-ref scheme="cpc">F04D25/08</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="F04D25/0606" definition-exists="false" ipc-concordant="F04D25/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D25/0606</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>the electric motor being specially adapted for integration in the pump</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="F04D25/0613" definition-exists="false" ipc-concordant="F04D25/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D25/0613</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>the electric motor being of the inside-out type, i.e. the rotor is arranged radially outside a central stator</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="12" additional-only="false" sort-key="F04D25/062" definition-exists="false" ipc-concordant="F04D25/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D25/062</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Details of the bearings</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="F04D25/0626" definition-exists="false" ipc-concordant="F04D25/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D25/0626</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Details of the lubrication</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="F04D25/0633" definition-exists="false" ipc-concordant="F04D25/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D25/0633</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Details of the magnetic circuit</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="F04D25/064" definition-exists="false" ipc-concordant="F04D25/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D25/064</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Details of the rotor</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="F04D25/0646" definition-exists="false" ipc-concordant="F04D25/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D25/0646</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Details of the stator</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="F04D25/0653" definition-exists="false" ipc-concordant="F04D25/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D25/0653</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>the motor having a plane air gap, e.g. disc-type</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="F04D25/066" definition-exists="false" ipc-concordant="F04D25/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D25/066</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Linear Motors</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="F04D25/0666" definition-exists="false" ipc-concordant="F04D25/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D25/0666</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>a sensor is integrated into the pump/motor design</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="F04D25/0673" definition-exists="false" ipc-concordant="F04D25/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D25/0673</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Battery powered</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="F04D25/068" definition-exists="false" ipc-concordant="F04D25/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D25/068</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Mechanical details of the pump control unit </text><reference><text>pump control details <class-ref scheme="cpc">F04D27/00</class-ref></text></reference></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="F04D25/0686" definition-exists="false" ipc-concordant="F04D25/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D25/0686</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>specially adapted for submerged use</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="F04D25/0693" definition-exists="false" ipc-concordant="F04D25/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D25/0693</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Details or arrangements of the wiring</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="F04D25/08" definition-exists="false" ipc-concordant="F04D25/08" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D25/08</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>the working fluid being air, e.g. for ventilation</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="F04D25/082" definition-exists="false" ipc-concordant="F04D25/08" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D25/082</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>the unit having provision for cooling the motor</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="F04D25/084" definition-exists="false" ipc-concordant="F04D25/08" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D25/084</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>hand fans</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="F04D25/086" definition-exists="false" ipc-concordant="F04D25/08" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D25/086</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>hand operated</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="F04D25/088" definition-exists="false" ipc-concordant="F04D25/08" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D25/088</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Ceiling fans</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="F04D25/10" definition-exists="false" ipc-concordant="F04D25/10" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D25/10</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>the unit having provisions for automatically changing direction of output air</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="F04D25/105" definition-exists="false" ipc-concordant="F04D25/10" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D25/105</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>by changing rotor axis direction, e.g. oscillating fans </text><reference><text>interconnecting rotary motion and oscillating motion <class-ref scheme="cpc">F16H</class-ref></text></reference></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="F04D25/12" definition-exists="false" ipc-concordant="F04D25/12" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D25/12</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>the unit being adapted for mounting in apertures</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="F04D25/14" definition-exists="false" ipc-concordant="F04D25/14" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D25/14</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>and having shutters, e.g. automatically closed when not in use</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="F04D25/16" definition-exists="false" ipc-concordant="F04D25/16" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D25/16</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Combinations of two or more pumps </text><CPC-specific-text><text>Producing two or more separate gas flows</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F04D25/163" definition-exists="false" ipc-concordant="F04D25/16" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D25/163</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>driven by a common gearing arrangement</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="F04D25/166" definition-exists="false" ipc-concordant="F04D25/16" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D25/166</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>using fans</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="F04D27/00" definition-exists="true" ipc-concordant="F04D27/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2023-01-01" status="published"><classification-symbol>F04D27/00</classification-symbol><class-title date-revised="2023-01-01"><title-part><text>Control, e.g. regulation, of pumps, pumping installations or pumping systems 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="F04D27/001" definition-exists="false" ipc-concordant="F04D27/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D27/001</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Testing thereof; Determination or simulation of flow characteristics; Stall or surge detection, e.g. condition monitoring</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="F04D27/002" definition-exists="false" ipc-concordant="F04D27/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2016-05-01" status="published"><classification-symbol>F04D27/002</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>by varying geometry within the pumps, e.g. by adjusting vanes</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="F04D27/003" definition-exists="false" ipc-concordant="F04D27/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2016-05-01" status="published"><classification-symbol>F04D27/003</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>by throttling </text><reference><text><class-ref scheme="cpc">F04D27/002</class-ref> takes precedence</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="F04D27/004" definition-exists="false" ipc-concordant="F04D27/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2016-05-01" status="published"><classification-symbol>F04D27/004</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>by varying driving speed</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="F04D27/005" definition-exists="false" ipc-concordant="F04D27/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2016-05-01" status="published"><classification-symbol>F04D27/005</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>by changing flow path between different stages or between a plurality of compressors; Load distribution between compressors</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="F04D27/006" definition-exists="false" ipc-concordant="F04D27/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2016-05-01" status="published"><classification-symbol>F04D27/006</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>by influencing fluid temperatures</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="F04D27/007" definition-exists="false" ipc-concordant="F04D27/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2016-05-01" status="published"><classification-symbol>F04D27/007</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Conjoint control of two or more different functions</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="F04D27/008" definition-exists="false" ipc-concordant="F04D27/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2016-05-01" status="published"><classification-symbol>F04D27/008</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Stop safety or alarm devices, e.g. stop-and-go control; Disposition of check-valves</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="F04D27/009" definition-exists="false" ipc-concordant="F04D27/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2016-05-01" status="published"><classification-symbol>F04D27/009</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>by bleeding, by passing or recycling fluid</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="F04D27/02" definition-exists="false" ipc-concordant="F04D27/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D27/02</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Surge control </text><CPC-specific-text><reference><text>surge detection <class-ref scheme="cpc">F04D27/001</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="F04D27/0207" definition-exists="false" ipc-concordant="F04D27/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2015-09-01" status="published"><classification-symbol>F04D27/0207</classification-symbol><class-title date-revised="2015-09-01"><title-part><CPC-specific-text><text>by bleeding, bypassing or recycling fluids </text><reference><text>influencing the boundary layer by an uncontrolled bleeding of the working fluid <class-ref scheme="cpc">F04D29/681</class-ref></text></reference></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="F04D27/0215" definition-exists="false" ipc-concordant="F04D27/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D27/0215</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Arrangements therefor, e.g. bleed or by-pass valves</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="F04D27/0223" definition-exists="false" ipc-concordant="F04D27/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D27/0223</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Control schemes therefor</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="F04D27/023" definition-exists="false" ipc-concordant="F04D27/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D27/023</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Details or means for fluid extraction</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="F04D27/0238" definition-exists="false" ipc-concordant="F04D27/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D27/0238</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Details or means for fluid reinjection</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="F04D27/0246" definition-exists="false" ipc-concordant="F04D27/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D27/0246</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>by varying geometry within the pumps, e.g. by adjusting vanes</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="F04D27/0253" definition-exists="false" ipc-concordant="F04D27/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D27/0253</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>by throttling </text><reference><text><class-ref scheme="cpc">F04D27/0246</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="F04D27/0261" definition-exists="false" ipc-concordant="F04D27/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D27/0261</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>by varying driving speed</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="F04D27/0269" definition-exists="false" ipc-concordant="F04D27/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D27/0269</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>by changing flow path between different stages or between a plurality of compressors; load distribution between compressors</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="F04D27/0276" definition-exists="false" ipc-concordant="F04D27/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D27/0276</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>by influencing fluid temperature</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="F04D27/0284" definition-exists="false" ipc-concordant="F04D27/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D27/0284</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Conjoint control of two or more different functions</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="F04D27/0292" definition-exists="false" ipc-concordant="F04D27/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D27/0292</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Stop safety or alarm devices, e.g. stop-and-go control; Disposition of check-valves</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="F04D29/00" definition-exists="true" ipc-concordant="F04D29/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D29/00</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Details, component parts, or accessories </text><reference><text>machine elements in general <class-ref scheme="cpc">F16</class-ref></text></reference></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F04D29/002" definition-exists="false" ipc-concordant="F04D29/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D29/002</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>especially adapted for elastic fluid pumps</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="F04D29/005" definition-exists="false" ipc-concordant="F04D29/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D29/005</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Decorative aspects, i.e. features which have no effect on the functioning of the pump</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="F04D29/007" definition-exists="false" ipc-concordant="F04D29/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D29/007</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>especially adapted for liquid pumps</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="F04D29/02" definition-exists="false" ipc-concordant="F04D29/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D29/02</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Selection of particular materials </text><reference><text>for handling specific liquids <class-ref scheme="cpc">F04D7/00</class-ref> </text><CPC-specific-text><text><class-ref scheme="cpc">F04D23/001</class-ref></text></CPC-specific-text></reference></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F04D29/023" definition-exists="false" ipc-concordant="F04D29/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D29/023</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>especially adapted for elastic fluid 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="F04D29/026" definition-exists="false" ipc-concordant="F04D29/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D29/026</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>especially adapted for liquid 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="F04D29/04" definition-exists="false" ipc-concordant="F04D29/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D29/04</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Shafts or bearings, or assemblies thereof </text><reference><text>specially adapted for elastic fluid pumps <class-ref scheme="cpc">F04D29/05</class-ref></text></reference></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F04D29/0405" definition-exists="false" ipc-concordant="F04D29/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D29/0405</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>joining shafts, e.g. rigid couplings, quill shafts</text></CPC-specific-text></title-part></class-title><notes-and-warnings><note type="warning"><note-paragraph warning-type="reclass-source">The group <class-ref scheme="cpc">F04D29/0405</class-ref> is no longer used for the classification of new documents as from July 1st, 2007. The backlog of this group is being continuously reclassified to <class-ref scheme="cpc">F04D29/044</class-ref> and <class-ref scheme="cpc">F04D29/054</class-ref></note-paragraph></note></notes-and-warnings></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F04D29/041" definition-exists="false" ipc-concordant="F04D29/041" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D29/041</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Axial thrust balancing</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="F04D29/0413" definition-exists="false" ipc-concordant="F04D29/041" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D29/0413</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>hydrostatic; hydrodynamic thrust bearings</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="F04D29/0416" definition-exists="false" ipc-concordant="F04D29/041" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D29/0416</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>balancing pistons</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="F04D29/042" definition-exists="false" ipc-concordant="F04D29/042" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D29/042</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Axially shiftable rotors </text><reference><text><class-ref scheme="cpc">F04D29/041</class-ref> takes precedence </text><CPC-specific-text><text>; control by creating a by-pass <class-ref scheme="cpc">F04D15/0027</class-ref></text></CPC-specific-text></reference></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F04D29/043" definition-exists="false" ipc-concordant="F04D29/043" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D29/043</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Shafts</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="F04D29/044" definition-exists="false" ipc-concordant="F04D29/044" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D29/044</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Arrangements for joining or assembling shafts</text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F04D29/046" definition-exists="false" ipc-concordant="F04D29/046" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D29/046</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Bearings</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="F04D29/0462" definition-exists="false" ipc-concordant="F04D29/046" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D29/0462</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Bearing cartridges</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="F04D29/0465" definition-exists="false" ipc-concordant="F04D29/046" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D29/0465</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Ceramic bearing designs</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="F04D29/0467" definition-exists="false" ipc-concordant="F04D29/046" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D29/0467</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Spherical bearings</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="F04D29/047" definition-exists="false" ipc-concordant="F04D29/047" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D29/047</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>hydrostatic</text></title-part><title-part><text>hydrodynamic</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="F04D29/0473" definition-exists="false" ipc-concordant="F04D29/047" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D29/0473</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>for radial pumps</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="F04D29/0476" definition-exists="false" ipc-concordant="F04D29/047" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D29/0476</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>for axial pumps</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="F04D29/048" definition-exists="false" ipc-concordant="F04D29/048" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D29/048</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>magnetic</text></title-part><title-part><text>electromagnetic</text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="F04D29/049" definition-exists="false" ipc-concordant="F04D29/049" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D29/049</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Roller bearings</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="F04D29/05" definition-exists="false" ipc-concordant="F04D29/05" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D29/05</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Shafts or bearings, or assemblies thereof, specially adapted for elastic fluid pumps</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F04D29/051" definition-exists="false" ipc-concordant="F04D29/051" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D29/051</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Axial thrust balancing</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="F04D29/0513" definition-exists="false" ipc-concordant="F04D29/051" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D29/0513</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>hydrostatic; hydrodynamic thrust bearings</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="F04D29/0516" definition-exists="false" ipc-concordant="F04D29/051" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D29/0516</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>balancing pistons</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="F04D29/052" definition-exists="false" ipc-concordant="F04D29/052" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D29/052</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Axially shiftable rotors </text><reference><text><class-ref scheme="cpc">F04D29/051</class-ref> takes precedence </text><CPC-specific-text><text>; control by creating a by-pass <class-ref scheme="cpc">F04D27/0246</class-ref></text></CPC-specific-text></reference></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F04D29/053" definition-exists="false" ipc-concordant="F04D29/053" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D29/053</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Shafts</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="F04D29/054" definition-exists="false" ipc-concordant="F04D29/054" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D29/054</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Arrangements for joining or assembling shafts</text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F04D29/056" definition-exists="false" ipc-concordant="F04D29/056" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D29/056</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Bearings</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="F04D29/0563" definition-exists="false" ipc-concordant="F04D29/056" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D29/0563</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Bearings cartridges</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="F04D29/0566" definition-exists="false" ipc-concordant="F04D29/056" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D29/0566</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Ceramic bearing designs</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="F04D29/057" definition-exists="false" ipc-concordant="F04D29/057" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D29/057</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>hydrostatic</text></title-part><title-part><text>hydrodynamic</text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="F04D29/058" definition-exists="false" ipc-concordant="F04D29/058" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D29/058</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>magnetic</text></title-part><title-part><text>electromagnetic</text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="F04D29/059" definition-exists="false" ipc-concordant="F04D29/059" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D29/059</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Roller bearings</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="F04D29/06" definition-exists="false" ipc-concordant="F04D29/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D29/06</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Lubrication </text><CPC-specific-text><reference><text><class-ref scheme="cpc">F04D13/0606</class-ref>, <class-ref scheme="cpc">F04D13/0646</class-ref>, <class-ref scheme="cpc">F04D13/0653</class-ref> take precedence</text></reference></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F04D29/061" definition-exists="false" ipc-concordant="F04D29/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D29/061</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>especially adapted for liquid 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="F04D29/063" definition-exists="false" ipc-concordant="F04D29/063" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2017-08-01" status="published"><classification-symbol>F04D29/063</classification-symbol><class-title date-revised="2017-08-01"><title-part><text>specially adapted for elastic fluid pumps</text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F04D29/08" definition-exists="false" ipc-concordant="F04D29/08" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D29/08</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Sealings</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F04D29/083" definition-exists="false" ipc-concordant="F04D29/08" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D29/083</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>especially adapted for elastic fluid 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="F04D29/086" definition-exists="false" ipc-concordant="F04D29/08" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D29/086</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>especially adapted for liquid 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="F04D29/10" definition-exists="false" ipc-concordant="F04D29/10" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D29/10</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Shaft sealings</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="F04D29/102" definition-exists="false" ipc-concordant="F04D29/10" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D29/102</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>especially adapted for elastic fluid pumps</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="F04D29/104" definition-exists="false" ipc-concordant="F04D29/10" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D29/104</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>the sealing fluid being other than the working fluid or being the working fluid treated</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="F04D29/106" definition-exists="false" ipc-concordant="F04D29/10" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D29/106</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>especially adapted for liquid pumps</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="F04D29/108" definition-exists="false" ipc-concordant="F04D29/10" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D29/108</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>the sealing fluid being other than the working liquid or being the working liquid treated</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="F04D29/12" definition-exists="false" ipc-concordant="F04D29/12" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D29/12</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>using sealing-rings</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="F04D29/122" definition-exists="false" ipc-concordant="F04D29/12" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D29/122</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>especially adapted for elastic fluid pumps</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="12" additional-only="false" sort-key="F04D29/124" definition-exists="false" ipc-concordant="F04D29/12" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D29/124</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>with special means for adducting cooling or sealing fluid</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="F04D29/126" definition-exists="false" ipc-concordant="F04D29/12" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D29/126</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>especially adapted for liquid pumps</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="12" additional-only="false" sort-key="F04D29/128" definition-exists="false" ipc-concordant="F04D29/12" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D29/128</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>with special means for adducting cooling or sealing fluid</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="F04D29/14" definition-exists="false" ipc-concordant="F04D29/14" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D29/14</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>operative only when pump is inoperative</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="F04D29/143" definition-exists="false" ipc-concordant="F04D29/14" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D29/143</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>especially adapted for elastic fluid pumps</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="F04D29/146" definition-exists="false" ipc-concordant="F04D29/14" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D29/146</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>especially adapted for liquid pumps</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="F04D29/16" definition-exists="false" ipc-concordant="F04D29/16" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D29/16</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>between pressure and suction sides</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="F04D29/161" definition-exists="false" ipc-concordant="F04D29/16" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D29/161</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>especially adapted for elastic fluid pumps</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="F04D29/162" definition-exists="false" ipc-concordant="F04D29/16" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D29/162</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>of a centrifugal flow wheel</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="F04D29/164" definition-exists="false" ipc-concordant="F04D29/16" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D29/164</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>of an axial flow wheel</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="F04D29/165" definition-exists="false" ipc-concordant="F04D29/16" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D29/165</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>especially adapted for liquid pumps</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="F04D29/167" definition-exists="false" ipc-concordant="F04D29/16" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D29/167</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>of a centrifugal flow wheel</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="F04D29/168" definition-exists="false" ipc-concordant="F04D29/16" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D29/168</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>of an axial flow wheel</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="F04D29/18" definition-exists="false" ipc-concordant="F04D29/18" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D29/18</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Rotors </text><reference><text>specially for elastic fluids <class-ref scheme="cpc">F04D29/26</class-ref></text></reference></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F04D29/181" definition-exists="false" ipc-concordant="F04D29/18" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D29/181</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Axial flow rotors </text><reference><text><class-ref scheme="cpc">F04D29/185</class-ref> take precedence</text></reference></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="F04D29/183" definition-exists="false" ipc-concordant="F04D29/18" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D29/183</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Semi axial flow rotors</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="F04D29/185" definition-exists="false" ipc-concordant="F04D29/18" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D29/185</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Rotors consisting of a plurality of wheels</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="F04D29/186" definition-exists="false" ipc-concordant="F04D29/18" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D29/186</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Shaftless rotors </text><reference><text><class-ref scheme="cpc">F04D13/024</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="F04D29/188" definition-exists="false" ipc-concordant="F04D29/18" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D29/188</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>specially for regenerative 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="F04D29/20" definition-exists="false" ipc-concordant="F04D29/20" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D29/20</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Mounting rotors on shafts</text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F04D29/22" definition-exists="false" ipc-concordant="F04D29/22" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D29/22</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>specially for centrifugal pumps</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="F04D29/2205" definition-exists="false" ipc-concordant="F04D29/22" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D29/2205</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Conventional flow pattern </text><reference><text><class-ref scheme="cpc">F04D29/18</class-ref> takes precedence</text></reference></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="F04D29/2211" definition-exists="false" ipc-concordant="F04D29/22" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D29/2211</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>More than one set of flow passages</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="F04D29/2216" definition-exists="false" ipc-concordant="F04D29/22" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D29/2216</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Shape, geometry </text><reference><text><class-ref scheme="cpc">F04D29/2211</class-ref> takes precedence</text></reference></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="F04D29/2222" definition-exists="false" ipc-concordant="F04D29/22" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D29/2222</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Construction and assembly </text><reference><text><class-ref scheme="cpc">F04D29/2211</class-ref> takes precedence</text></reference></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="12" additional-only="false" sort-key="F04D29/2227" definition-exists="false" ipc-concordant="F04D29/22" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D29/2227</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>for special materials</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="F04D29/2233" definition-exists="false" ipc-concordant="F04D29/22" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D29/2233</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>entirely open or stamped from one sheet</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="F04D29/2238" definition-exists="false" ipc-concordant="F04D29/22" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D29/2238</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Special flow patterns </text><reference><text><class-ref scheme="cpc">F04D11/005</class-ref> takes precedence</text></reference></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="F04D29/2244" definition-exists="false" ipc-concordant="F04D29/22" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D29/2244</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Free vortex</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="F04D29/225" definition-exists="false" ipc-concordant="F04D29/22" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D29/225</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Channel wheels, e.g. one blade or one flow channel</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="F04D29/2255" definition-exists="false" ipc-concordant="F04D29/22" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D29/2255</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>flow-channels with a special cross-section contour, e.g. ejecting, throttling or diffusing effect</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="F04D29/2261" definition-exists="false" ipc-concordant="F04D29/22" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D29/2261</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>with special measures</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="F04D29/2266" definition-exists="false" ipc-concordant="F04D29/22" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D29/2266</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>for sealing or thrust balance </text><reference><text><class-ref scheme="cpc">F04D29/04</class-ref> and <class-ref scheme="cpc">F04D29/16</class-ref> take precedence</text></reference></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="F04D29/2272" definition-exists="false" ipc-concordant="F04D29/22" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D29/2272</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>for influencing flow or boundary layer</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="F04D29/2277" definition-exists="false" ipc-concordant="F04D29/22" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D29/2277</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>for increasing NPSH or dealing with liquids near boiling-point</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="F04D29/2283" definition-exists="false" ipc-concordant="F04D29/22" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D29/2283</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>for reverse pumping action</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="F04D29/2288" definition-exists="false" ipc-concordant="F04D29/22" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D29/2288</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>for comminuting, mixing or separating</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="F04D29/2294" definition-exists="false" ipc-concordant="F04D29/22" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D29/2294</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>for protection, e.g. against abrasion</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="F04D29/24" definition-exists="false" ipc-concordant="F04D29/24" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D29/24</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Vanes</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="F04D29/242" definition-exists="false" ipc-concordant="F04D29/24" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D29/242</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Geometry, shape</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="12" additional-only="false" sort-key="F04D29/245" definition-exists="false" ipc-concordant="F04D29/24" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D29/245</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>for special effects</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="F04D29/247" definition-exists="false" ipc-concordant="F04D29/24" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D29/247</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>elastic or self-adjusting</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="F04D29/26" definition-exists="false" ipc-concordant="F04D29/26" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D29/26</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Rotors specially for elastic fluids</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F04D29/263" definition-exists="false" ipc-concordant="F04D29/26" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D29/263</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>mounting fan or blower rotors on shafts</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="F04D29/266" definition-exists="false" ipc-concordant="F04D29/26" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D29/266</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>mounting compressor rotors on shafts</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="F04D29/28" definition-exists="false" ipc-concordant="F04D29/28" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D29/28</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>for centrifugal or helico-centrifugal pumps </text><CPC-specific-text><text>for radial-flow or helico-centrifugal pumps</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="F04D29/281" definition-exists="false" ipc-concordant="F04D29/28" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D29/281</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>for fans or blowers</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="F04D29/282" definition-exists="false" ipc-concordant="F04D29/28" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D29/282</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>the leading edge of each vane being substantially parallel to the rotation axis</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="12" additional-only="false" sort-key="F04D29/283" definition-exists="false" ipc-concordant="F04D29/28" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D29/283</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>rotors of the squirrel-cage type</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="F04D29/284" definition-exists="false" ipc-concordant="F04D29/28" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D29/284</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>for compressors</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="F04D29/285" definition-exists="false" ipc-concordant="F04D29/28" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D29/285</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>the compressor wheel comprising a pair of rotatable bladed hub portions axially aligned and clamped together</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="F04D29/286" definition-exists="false" ipc-concordant="F04D29/28" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D29/286</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>multi-stage rotors</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="F04D29/287" definition-exists="false" ipc-concordant="F04D29/28" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D29/287</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>with adjusting means</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="F04D29/288" definition-exists="false" ipc-concordant="F04D29/28" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2016-08-01" status="published"><classification-symbol>F04D29/288</classification-symbol><class-title date-revised="2016-08-01"><title-part><CPC-specific-text><text>Part of the wheel having an ejecting effect, e.g. being bladeless diffuser</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="F04D29/289" definition-exists="false" ipc-concordant="F04D29/28" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D29/289</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>having provision against erosion or for dust-separation</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="F04D29/30" definition-exists="false" ipc-concordant="F04D29/30" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D29/30</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Vanes</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="F04D29/305" definition-exists="false" ipc-concordant="F04D29/30" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D29/305</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Flexible 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="F04D29/32" definition-exists="true" ipc-concordant="F04D29/32" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2018-08-01" status="published"><classification-symbol>F04D29/32</classification-symbol><class-title date-revised="2018-08-01"><title-part><text>for axial flow pumps</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="F04D29/321" definition-exists="false" ipc-concordant="F04D29/32" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D29/321</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>for axial flow compressors</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="F04D29/322" definition-exists="true" ipc-concordant="F04D29/32" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2018-08-01" status="published"><classification-symbol>F04D29/322</classification-symbol><class-title date-revised="2018-08-01"><title-part><CPC-specific-text><text>Blade mountings</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="12" additional-only="false" sort-key="F04D29/323" definition-exists="false" ipc-concordant="F04D29/32" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D29/323</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>adjustable</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="F04D29/324" definition-exists="true" ipc-concordant="F04D29/32" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2018-08-01" status="published"><classification-symbol>F04D29/324</classification-symbol><class-title date-revised="2018-08-01"><title-part><CPC-specific-text><text>Blades</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="F04D29/325" definition-exists="false" ipc-concordant="F04D29/32" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D29/325</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>for axial flow fans </text><reference><text>blade mountings <class-ref scheme="cpc">F04D29/34</class-ref>, blades <class-ref scheme="cpc">F04D29/38</class-ref></text></reference></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="F04D29/326" definition-exists="false" ipc-concordant="F04D29/32" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D29/326</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>comprising a rotating shroud</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="F04D29/327" definition-exists="false" ipc-concordant="F04D29/32" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D29/327</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>with non identical blades</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="F04D29/328" definition-exists="false" ipc-concordant="F04D29/32" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D29/328</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>with unequal distribution of blades around the hub</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="F04D29/329" definition-exists="false" ipc-concordant="F04D29/32" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D29/329</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Details of the hub</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="F04D29/34" definition-exists="false" ipc-concordant="F04D29/34" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D29/34</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Blade mountings </text><CPC-specific-text><reference><text>for axial flow compressors <class-ref scheme="cpc">F04D29/322</class-ref></text></reference></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="F04D29/36" definition-exists="false" ipc-concordant="F04D29/36" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D29/36</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>adjustable </text><CPC-specific-text><reference><text>flexible blades <class-ref scheme="cpc">F04D29/382</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="F04D29/362" definition-exists="false" ipc-concordant="F04D29/36" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D29/362</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>during rotation</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="13" additional-only="false" sort-key="F04D29/364" definition-exists="false" ipc-concordant="F04D29/36" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D29/364</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>The blades having only a predetermined number of possible positions</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="13" additional-only="false" sort-key="F04D29/366" definition-exists="false" ipc-concordant="F04D29/36" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D29/366</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Adjustment by interaction of inertion and lift</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="13" additional-only="false" sort-key="F04D29/368" definition-exists="false" ipc-concordant="F04D29/36" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D29/368</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Adjustment by differences of temperature</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="10" additional-only="false" sort-key="F04D29/38" definition-exists="false" ipc-concordant="F04D29/38" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D29/38</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Blades </text><CPC-specific-text><reference><text>for axial flow compressors <class-ref scheme="cpc">F04D29/324</class-ref></text></reference></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="F04D29/382" definition-exists="false" ipc-concordant="F04D29/38" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D29/382</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Flexible blades</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="F04D29/384" definition-exists="false" ipc-concordant="F04D29/38" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D29/384</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>characterised by form</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="12" additional-only="false" sort-key="F04D29/386" definition-exists="false" ipc-concordant="F04D29/38" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D29/386</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Skewed blades</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="F04D29/388" definition-exists="false" ipc-concordant="F04D29/38" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D29/388</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>characterised by construction</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="F04D29/40" definition-exists="false" ipc-concordant="F04D29/40" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D29/40</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Casings</text></title-part><title-part><text>Connections of working fluid </text><CPC-specific-text><reference><text>bleed or by-pass valves <class-ref scheme="cpc">F04D15/0011</class-ref>, <class-ref scheme="cpc">F04D27/0215</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="F04D29/403" definition-exists="false" ipc-concordant="F04D29/40" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D29/403</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>especially adapted for elastic fluid 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="F04D29/406" definition-exists="false" ipc-concordant="F04D29/40" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D29/406</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>especially adapted for liquid 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="F04D29/42" definition-exists="false" ipc-concordant="F04D29/42" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D29/42</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>for radial or helico-centrifugal pumps</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="F04D29/4206" definition-exists="false" ipc-concordant="F04D29/42" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D29/4206</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>especially adapted for elastic fluid pumps</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="F04D29/4213" definition-exists="false" ipc-concordant="F04D29/42" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D29/4213</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>suction ports</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="F04D29/422" definition-exists="false" ipc-concordant="F04D29/42" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D29/422</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Discharge tongues </text><reference><text><class-ref scheme="cpc">F04D17/04</class-ref> takes precedence</text></reference></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="F04D29/4226" definition-exists="false" ipc-concordant="F04D29/42" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D29/4226</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Fan casings</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="12" additional-only="false" sort-key="F04D29/4233" definition-exists="false" ipc-concordant="F04D29/42" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D29/4233</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>with volutes extending mainly in axial or radially inward direction</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="F04D29/424" definition-exists="false" ipc-concordant="F04D29/42" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D29/424</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Double entry casings</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="F04D29/4246" definition-exists="false" ipc-concordant="F04D29/42" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D29/4246</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>comprising more than one outlet</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="F04D29/4253" definition-exists="false" ipc-concordant="F04D29/42" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D29/4253</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>with axial entry and discharge</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="F04D29/426" definition-exists="false" ipc-concordant="F04D29/42" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D29/426</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>especially adapted for liquid pumps</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="F04D29/4266" definition-exists="false" ipc-concordant="F04D29/42" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D29/4266</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>made of sheet metal</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="F04D29/4273" definition-exists="false" ipc-concordant="F04D29/42" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D29/4273</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>suction eyes</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="F04D29/4286" definition-exists="false" ipc-concordant="F04D29/42" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2016-08-01" status="published"><classification-symbol>F04D29/4286</classification-symbol><class-title date-revised="2016-08-01"><title-part><CPC-specific-text><text>inside lining, e.g. rubber</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="F04D29/4293" definition-exists="false" ipc-concordant="F04D29/42" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D29/4293</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Details of fluid inlet or outlet</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="F04D29/44" definition-exists="false" ipc-concordant="F04D29/44" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D29/44</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Fluid-guiding means, e.g. diffusers</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="F04D29/441" definition-exists="false" ipc-concordant="F04D29/44" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D29/441</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>especially adapted for elastic fluid pumps</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="12" additional-only="false" sort-key="F04D29/442" definition-exists="false" ipc-concordant="F04D29/44" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D29/442</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>rotating diffusers</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="F04D29/444" definition-exists="false" ipc-concordant="F04D29/44" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D29/444</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Bladed diffusers</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="F04D29/445" definition-exists="false" ipc-concordant="F04D29/44" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D29/445</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>especially adapted for liquid pumps</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="12" additional-only="false" sort-key="F04D29/447" definition-exists="false" ipc-concordant="F04D29/44" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D29/447</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>rotating diffusers</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="F04D29/448" definition-exists="false" ipc-concordant="F04D29/44" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D29/448</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>bladed diffusers</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="F04D29/46" definition-exists="false" ipc-concordant="F04D29/46" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D29/46</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>adjustable</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="12" additional-only="false" sort-key="F04D29/462" definition-exists="false" ipc-concordant="F04D29/46" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D29/462</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>especially adapted for elastic fluid pumps</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="13" additional-only="false" sort-key="F04D29/464" definition-exists="false" ipc-concordant="F04D29/46" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D29/464</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>adjusting flow cross-section, otherwise than by using adjustable stator blades</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="F04D29/466" definition-exists="false" ipc-concordant="F04D29/46" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D29/466</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>especially adapted for liquid fluid pumps</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="13" additional-only="false" sort-key="F04D29/468" definition-exists="false" ipc-concordant="F04D29/46" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D29/468</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>adjusting flow cross-section, otherwise than by using adjustable stator blades</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="F04D29/48" definition-exists="false" ipc-concordant="F04D29/48" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D29/48</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>for unidirectional fluid flow in reversible pumps </text><CPC-specific-text><reference><text>rotors for reverse action <class-ref scheme="cpc">F04D29/2283</class-ref></text></reference></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="13" additional-only="false" sort-key="F04D29/483" definition-exists="false" ipc-concordant="F04D29/48" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D29/483</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>especially adapted for elastic fluid pumps</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="13" additional-only="false" sort-key="F04D29/486" definition-exists="false" ipc-concordant="F04D29/48" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D29/486</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>especially adapted for liquid pumps</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="F04D29/50" definition-exists="false" ipc-concordant="F04D29/50" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D29/50</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>for reversing fluid flow </text><CPC-specific-text><reference><text>rotors for reverse action <class-ref scheme="cpc">F04D29/2283</class-ref></text></reference></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="13" additional-only="false" sort-key="F04D29/503" definition-exists="false" ipc-concordant="F04D29/50" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D29/503</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>especially adapted for elastic fluid pumps</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="13" additional-only="false" sort-key="F04D29/506" definition-exists="false" ipc-concordant="F04D29/50" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D29/506</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>especially adapted for liquid pumps</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="9" additional-only="false" sort-key="F04D29/52" definition-exists="false" ipc-concordant="F04D29/52" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D29/52</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>for axial pumps</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="F04D29/522" definition-exists="false" ipc-concordant="F04D29/52" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D29/522</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>especially adapted for elastic fluid pumps</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="F04D29/524" definition-exists="false" ipc-concordant="F04D29/52" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D29/524</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>shiftable members for obturating part of the flow path</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="F04D29/526" definition-exists="false" ipc-concordant="F04D29/52" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D29/526</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Details of the casing section radially opposing blade tips </text><reference><text>ducts <class-ref scheme="cpc">F04D29/545</class-ref></text></reference></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="F04D29/528" definition-exists="false" ipc-concordant="F04D29/52" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D29/528</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>especially adapted for liquid pumps</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="F04D29/54" definition-exists="false" ipc-concordant="F04D29/54" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D29/54</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Fluid-guiding means, e.g. diffusers</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="F04D29/541" definition-exists="false" ipc-concordant="F04D29/54" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D29/541</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Specially adapted for elastic fluid pumps </text><reference><text><class-ref scheme="cpc">F04D29/56</class-ref> takes precedence</text></reference></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="12" additional-only="false" sort-key="F04D29/542" definition-exists="false" ipc-concordant="F04D29/54" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D29/542</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Bladed diffusers </text><reference><text>fixing blades to stators <class-ref scheme="cpc">F01D9/042</class-ref></text></reference></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="13" additional-only="false" sort-key="F04D29/544" definition-exists="false" ipc-concordant="F04D29/54" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D29/544</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Blade shapes</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="F04D29/545" definition-exists="false" ipc-concordant="F04D29/54" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D29/545</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Ducts</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="13" additional-only="false" sort-key="F04D29/547" definition-exists="false" ipc-concordant="F04D29/54" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D29/547</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>having a special shape in order to influence fluid flow</text></CPC-specific-text></title-part></class-title></classification-item></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="F04D29/548" definition-exists="false" ipc-concordant="F04D29/54" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D29/548</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Specially adapted for liquid pumps </text><reference><text><class-ref scheme="cpc">F04D29/56</class-ref> takes precedence</text></reference></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="F04D29/56" definition-exists="false" ipc-concordant="F04D29/56" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D29/56</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>adjustable</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="12" additional-only="false" sort-key="F04D29/563" definition-exists="false" ipc-concordant="F04D29/56" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D29/563</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>specially adapted for elastic fluid pumps</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="F04D29/566" definition-exists="false" ipc-concordant="F04D29/56" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D29/566</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>specially adapted for liquid pumps</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="8" additional-only="false" sort-key="F04D29/58" definition-exists="false" ipc-concordant="F04D29/58" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D29/58</classification-symbol><class-title date-revised="2013-01-01"><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>Heating</text></title-part><title-part><text>Diminishing heat transfer </text><CPC-specific-text><reference><text>for the motor of air-pump units <class-ref scheme="cpc">F04D25/082</class-ref>; cooling of shafts or bearings <class-ref scheme="cpc">F04D29/04</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="F04D29/5806" definition-exists="false" ipc-concordant="F04D29/58" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D29/5806</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Cooling the drive system</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="F04D29/5813" definition-exists="false" ipc-concordant="F04D29/58" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D29/5813</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Cooling the control unit</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="F04D29/582" definition-exists="false" ipc-concordant="F04D29/58" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D29/582</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>specially adapted for elastic fluid pumps</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="F04D29/5826" definition-exists="false" ipc-concordant="F04D29/58" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D29/5826</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Cooling at least part of the working fluid in a heat exchanger</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="F04D29/5833" definition-exists="false" ipc-concordant="F04D29/58" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D29/5833</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>flow schemes and regulation thereto</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="F04D29/608" definition-exists="false" ipc-concordant="F04D29/60" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D29/608</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>means for removing without depressurizing the cavity</text></CPC-specific-text></title-part></class-title></classification-item></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="F04D29/648" definition-exists="false" ipc-concordant="F04D29/64" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D29/648</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>especially adapted for liquid pumps</text></CPC-specific-text></title-part></class-title></classification-item></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="F04D29/662" definition-exists="false" ipc-concordant="F04D29/66" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D29/662</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Balancing of rotors </text><reference><text>compensating unbalance <class-ref scheme="cpc">G01M1/36</class-ref></text></reference></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="F04D29/687" definition-exists="false" ipc-concordant="F04D29/68" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D29/687</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Plasma actuators therefore</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="F04D29/688" definition-exists="false" ipc-concordant="F04D29/68" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D29/688</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>especially adapted for liquid 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="F04D29/70" definition-exists="false" ipc-concordant="F04D29/70" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D29/70</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Suction grids</text></title-part><title-part><text>Strainers</text></title-part><title-part><text>Dust separation</text></title-part><title-part><text>Cleaning</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F04D29/701" definition-exists="false" ipc-concordant="F04D29/70" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D29/701</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>especially adapted for elastic fluid pumps</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="F04D29/703" definition-exists="false" ipc-concordant="F04D29/70" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D29/703</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>specially for fans, e.g. fan guards</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="F04D29/705" definition-exists="false" ipc-concordant="F04D29/70" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D29/705</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Adding liquids</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="F04D29/706" definition-exists="false" ipc-concordant="F04D29/70" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D29/706</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Humidity separation</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="F04D29/708" definition-exists="false" ipc-concordant="F04D29/70" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D29/708</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>specially for liquid pumps</text></CPC-specific-text></title-part></class-title></classification-item></classification-item></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="true" level="6" additional-only="false" sort-key="F04D31/00" date-revised="2013-01-01" status="published"><classification-symbol>F04D31/00</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Other non-positive-displacement pumps</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="7" additional-only="false" sort-key="F04D31/00" definition-exists="true" ipc-concordant="F04D31/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D31/00</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Pumping liquids and elastic fluids at the same time</text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="7" additional-only="false" sort-key="F04D33/00" definition-exists="true" ipc-concordant="F04D33/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F04D33/00</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Non-positive-displacement pumps with other than pure rotation, e.g. of oscillating type </text><reference><text><class-ref scheme="cpc">F04D35/00</class-ref> takes precedence; hand-held fans <class-ref scheme="cpc">A45B</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="F04D35/00" definition-exists="true" ipc-concordant="F04D35/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2017-05-01" status="published"><classification-symbol>F04D35/00</classification-symbol><class-title date-revised="2017-05-01"><title-part><text>Pumps producing waves in liquids, i.e. wave-producers </text><reference><text>for bath tubs <class-ref scheme="cpc">A47K3/10</class-ref></text></reference></title-part></class-title></classification-item></classification-item></classification-item></class-scheme>