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<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="F01B" definition-exists="true" date-revised="2018-08-01" status="published"><classification-symbol>F01B</classification-symbol><class-title date-revised="2018-01-01"><title-part><text>MACHINES OR ENGINES, IN GENERAL OR OF POSITIVE-DISPLACEMENT TYPE, e.g. STEAM ENGINES </text><reference><text>of rotary-piston or oscillating-piston type <class-ref scheme="cpc">F01C</class-ref>; of non-positive-displacement type <class-ref scheme="cpc">F01D</class-ref>; internal-combustion aspects of reciprocating-piston engines <class-ref scheme="cpc">F02B57/00</class-ref>, <class-ref scheme="cpc">F02B59/00</class-ref>; crankshafts, crossheads, connecting-rods <class-ref scheme="cpc">F16C</class-ref>; flywheels <class-ref scheme="cpc">F16F</class-ref>; gearings for interconverting rotary motion and reciprocating motion in general <class-ref scheme="cpc">F16H</class-ref>; pistons, piston rods, cylinders, for engines in general <class-ref scheme="cpc">F16J</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>, with the exception of the matter provided for in subclasses <class-ref scheme="cpc">F01C</class-ref>&#160;-&#160;<class-ref scheme="cpc">F01P</class-ref> : <subnote type="bullet"><note-paragraph>engines for elastic fluids, e.g. steam engines; </note-paragraph><note-paragraph>engines for liquids and elastic fluids; </note-paragraph><note-paragraph>machines for elastic fluids; </note-paragraph><note-paragraph>machines for liquids and elastic fluids.</note-paragraph></subnote></note-paragraph><note-paragraph>Attention is drawn to the note preceding class <class-ref scheme="cpc">F01</class-ref>, especially as regards the definitions of &quot;steam&quot; and &quot;special vapour&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="F01B1/00" date-revised="2013-01-01" status="published"><classification-symbol>F01B1/00</classification-symbol>
<classification-item breakdown-code="false" not-allocatable="false" level="7" additional-only="false" sort-key="F01B1/00" definition-exists="true" ipc-concordant="F01B1/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B1/00</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Reciprocating-piston machines or engines characterised by number or relative disposition of cylinders or by being built-up from separate cylinder-crankcase elements </text><reference><text><class-ref scheme="cpc">F01B3/00</class-ref>, <class-ref scheme="cpc">F01B5/00</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="F01B1/01" definition-exists="false" ipc-concordant="F01B1/01" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B1/01</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>with one single cylinder</text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F01B1/02" definition-exists="false" ipc-concordant="F01B1/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B1/02</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>with cylinders all in one line</text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F01B1/04" definition-exists="false" ipc-concordant="F01B1/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B1/04</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>with cylinders in V-arrangement</text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F01B1/06" definition-exists="false" ipc-concordant="F01B1/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B1/06</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>with cylinders in star or fan arrangement</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F01B1/0603" definition-exists="true" ipc-concordant="F01B1/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B1/0603</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>the connection of the pistons with an element being at the outer ends of the cylinders</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="F01B1/0606" definition-exists="false" ipc-concordant="F01B1/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B1/0606</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>with cam-actuated distribution member(s)</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="F01B1/061" definition-exists="false" ipc-concordant="F01B1/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B1/061</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>with two or more series radial piston-cylinder units</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="F01B1/0613" definition-exists="false" ipc-concordant="F01B1/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B1/0613</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>directly located side by side</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="F01B1/0617" definition-exists="false" ipc-concordant="F01B1/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B1/0617</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>coupling of several cylinders-barrels</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="F01B1/062" definition-exists="true" ipc-concordant="F01B1/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B1/062</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>the connection of the pistons with an actuating or actuated element being at the inner ends of the cylinders</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="F01B1/0624" definition-exists="false" ipc-concordant="F01B1/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B1/0624</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>with cam-actuated distribution member(s)</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="F01B1/0627" definition-exists="false" ipc-concordant="F01B1/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B1/0627</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>each machine piston being provided with channels, which are coacting with the cylinder and are used as a distribution member for another piston-cylinder unit</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="F01B1/0631" definition-exists="false" ipc-concordant="F01B1/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B1/0631</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>the piston-driving or -driven cam being provided with an inlet or an outlet</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="F01B1/0634" definition-exists="false" ipc-concordant="F01B1/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B1/0634</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>with two or more series radial piston-cylinder units</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="F01B1/0637" definition-exists="false" ipc-concordant="F01B1/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B1/0637</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>directly located side by side</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="F01B1/0641" definition-exists="false" ipc-concordant="F01B1/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B1/0641</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Details, component parts specially adapted for such machines</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="F01B1/0644" definition-exists="false" ipc-concordant="F01B1/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B1/0644</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Pistons</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="F01B1/0648" definition-exists="false" ipc-concordant="F01B1/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B1/0648</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Cams</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="F01B1/0651" definition-exists="false" ipc-concordant="F01B1/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B1/0651</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>consisting of several cylindrical elements, e.g. rollers</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="F01B1/0655" definition-exists="false" ipc-concordant="F01B1/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B1/0655</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>cylinders</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="F01B1/0658" definition-exists="false" ipc-concordant="F01B1/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B1/0658</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Arrangements for pressing or connecting the pistons against the actuating or actuated cam</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="F01B1/0662" definition-exists="false" ipc-concordant="F01B1/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B1/0662</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>hydraulically</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="F01B1/0665" definition-exists="false" ipc-concordant="F01B1/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B1/0665</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Disconnecting the pistons from the actuating or actuated cam </text><reference><text>in general <class-ref scheme="cpc">F01B31/24</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="F01B1/0668" definition-exists="false" ipc-concordant="F01B1/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B1/0668</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Supporting and guiding means for the piston</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="F01B1/0672" definition-exists="false" ipc-concordant="F01B1/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2018-01-01" status="published"><classification-symbol>F01B1/0672</classification-symbol><class-title date-revised="2018-01-01"><title-part><CPC-specific-text><text>Draining of the machine housing; arrangements dealing with leakage fluid</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F01B1/0675" definition-exists="false" ipc-concordant="F01B1/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B1/0675</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Controlling</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="F01B1/0679" definition-exists="false" ipc-concordant="F01B1/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B1/0679</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>by using a valve in a system with several pump or motor chambers, wherein the flow path through the chambers 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="10" additional-only="false" sort-key="F01B1/0682" definition-exists="false" ipc-concordant="F01B1/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B1/0682</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>by changing the effective cross sectional piston working surface</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="F01B1/0686" definition-exists="false" ipc-concordant="F01B1/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B1/0686</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>by changing the effective piston stroke</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="F01B1/0689" definition-exists="false" ipc-concordant="F01B1/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B1/0689</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>by changing the excentricity of one element relative to another element</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="F01B1/0693" definition-exists="false" ipc-concordant="F01B1/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B1/0693</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>by changing the phase relationship between two actuating or actuated cams</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="F01B1/0696" definition-exists="false" ipc-concordant="F01B1/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B1/0696</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>by changing the phase relationship between the actuating or actuated cam and the distributing means</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="F01B1/08" definition-exists="false" ipc-concordant="F01B1/08" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B1/08</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>with cylinders arranged oppositely relative to main shaft and of &quot;flat&quot; type</text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F01B1/10" definition-exists="false" ipc-concordant="F01B1/10" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B1/10</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>with more than one main shaft, e.g. coupled to common output shaft </text><reference><text>combinations of two or more machines or engines <class-ref scheme="cpc">F01B21/00</class-ref></text></reference></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F01B1/12" definition-exists="false" ipc-concordant="F01B1/12" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B1/12</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Separate cylinder-crankcase elements coupled together to form a unit</text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="7" additional-only="false" sort-key="F01B3/00" definition-exists="true" ipc-concordant="F01B3/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B3/00</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Reciprocating-piston machines or engines with cylinder axes coaxial with, or parallel or inclined to, main shaft axis</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F01B3/0002" definition-exists="true" ipc-concordant="F01B3/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B3/0002</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>having stationary cylinders</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F01B3/0005" definition-exists="true" ipc-concordant="F01B3/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B3/0005</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>having two or more sets of cylinders or pistons</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="F01B3/0008" definition-exists="true" ipc-concordant="F01B3/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B3/0008</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>having self-acting distribution members, e.g. actuated by working fluid</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="F01B3/0011" definition-exists="true" ipc-concordant="F01B3/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B3/0011</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Cylindrical distribution members</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="F01B3/0014" definition-exists="true" ipc-concordant="F01B3/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B3/0014</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Conical distribution members</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="F01B3/0017" definition-exists="false" ipc-concordant="F01B3/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B3/0017</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Component parts, details, e.g. sealings, lubrication</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="F01B3/002" definition-exists="false" ipc-concordant="F01B3/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B3/002</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Cylinders</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="F01B3/0023" definition-exists="false" ipc-concordant="F01B3/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B3/0023</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Actuating or actuated elements</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="F01B3/0026" definition-exists="false" ipc-concordant="F01B3/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B3/0026</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Actuating or actuated element bearing means or driving or driven axis bearing means</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="F01B3/0029" definition-exists="false" ipc-concordant="F01B3/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B3/0029</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Casings, housings</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="F01B3/0032" definition-exists="true" ipc-concordant="F01B3/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B3/0032</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>having rotary cylinder block</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F01B3/0035" definition-exists="false" ipc-concordant="F01B3/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B3/0035</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>having two or more sets of cylinders or pistons</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="F01B3/0038" definition-exists="true" ipc-concordant="F01B3/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B3/0038</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>inclined to main shaft axis</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="F01B3/0041" definition-exists="true" ipc-concordant="F01B3/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B3/0041</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Arrangements for pressing the cylinder barrel against the valve plate, e.g. fluid pressure</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="F01B3/0044" definition-exists="false" ipc-concordant="F01B3/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B3/0044</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Component parts, details, e.g. valves, sealings, lubrication</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="F01B3/0047" definition-exists="true" ipc-concordant="F01B3/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B3/0047</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Particularities in the contacting area between cylinder barrel and valve plate</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="F01B3/005" definition-exists="true" ipc-concordant="F01B3/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B3/005</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Bearing arrangements</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="F01B3/0052" definition-exists="true" ipc-concordant="F01B3/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B3/0052</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Cylinder barrel</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="F01B3/0055" definition-exists="false" ipc-concordant="F01B3/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B3/0055</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Valve means, e.g. valve plate</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="F01B3/0058" definition-exists="false" ipc-concordant="F01B3/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B3/0058</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Cylindrical valve means</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="F01B3/0061" definition-exists="true" ipc-concordant="F01B3/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B3/0061</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Conical valve means</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="F01B3/0064" definition-exists="false" ipc-concordant="F01B3/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B3/0064</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Machine housing</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="F01B3/0067" definition-exists="false" ipc-concordant="F01B3/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B3/0067</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>cylinder barrel bearing means</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="F01B3/007" definition-exists="true" ipc-concordant="F01B3/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B3/007</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Swash plate</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="F01B3/0073" definition-exists="false" ipc-concordant="F01B3/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B3/0073</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>swash plate bearing means or driving or driven axis bearing means</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="F01B3/0076" definition-exists="true" ipc-concordant="F01B3/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B3/0076</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Connection between cylinder barrel and inclined swash plate</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="F01B3/0079" definition-exists="true" ipc-concordant="F01B3/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B3/0079</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>having pistons with rotary and reciprocating motion, i.e. spinning pistons</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="F01B3/0082" definition-exists="false" ipc-concordant="F01B3/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B3/0082</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Details</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F01B3/0085" definition-exists="false" ipc-concordant="F01B3/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B3/0085</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Pistons</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="F01B3/0088" definition-exists="false" ipc-concordant="F01B3/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B3/0088</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Piston shoe retaining means</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="F01B3/0091" definition-exists="false" ipc-concordant="F01B3/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B3/0091</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Casings, housings</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="F01B3/0094" definition-exists="false" ipc-concordant="F01B3/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B3/0094</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Driving or driven means</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="F01B3/0097" definition-exists="false" ipc-concordant="F01B3/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B2003/0097</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Z-shafts, i.e. driven or driving shafts in Z-form</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="F01B3/02" definition-exists="true" ipc-concordant="F01B3/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B3/02</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>with wobble-plate</text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F01B3/04" definition-exists="true" ipc-concordant="F01B3/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B3/04</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>the piston motion being transmitted by curved surfaces</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F01B3/045" definition-exists="true" ipc-concordant="F01B3/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B3/045</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>by two or more curved surfaces, e.g. for two or more pistons in one cylinder</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="F01B3/06" definition-exists="true" ipc-concordant="F01B3/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B3/06</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>by multi-turn helical surfaces and automatic reversal</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="F01B3/08" definition-exists="true" ipc-concordant="F01B3/08" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B3/08</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>the helices being arranged on the pistons</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="F01B3/10" definition-exists="true" ipc-concordant="F01B3/10" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B3/10</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Control of working-fluid admission or discharge peculiar thereto </text><reference><text>suitable for more general application <class-ref scheme="cpc">F01L</class-ref></text></reference></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F01B3/101" definition-exists="false" ipc-concordant="F01B3/10" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B3/101</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>for machines with stationary cylinders</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="F01B3/102" definition-exists="false" ipc-concordant="F01B3/10" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B3/102</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Changing the piston stroke by changing the position of the swash plate</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="F01B3/103" definition-exists="true" ipc-concordant="F01B3/10" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B3/103</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>for machines with rotary cylinder block</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="F01B3/104" definition-exists="true" ipc-concordant="F01B3/10" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B3/104</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>by turning the valve plate</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="F01B3/105" definition-exists="false" ipc-concordant="F01B3/10" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B3/105</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>by moving the swash plate in a direction perpendicular to the axis of rotation of the cylinder barrel</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="F01B3/106" definition-exists="true" ipc-concordant="F01B3/10" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B3/106</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>by changing the inclination of the swash plate</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="F01B3/107" definition-exists="false" ipc-concordant="F01B3/10" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B3/107</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>using wedges</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="F01B3/108" definition-exists="true" ipc-concordant="F01B3/10" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B3/108</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>by turning the swash plate (with fixed inclination)</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="F01B3/109" definition-exists="true" ipc-concordant="F01B3/10" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B3/109</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>by changing the inclination of the axis of the cylinder barrel relative to the swash plate </text><reference><text><class-ref scheme="cpc">F01B3/106</class-ref> takes precedence</text></reference></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="F01B5/00" definition-exists="true" ipc-concordant="F01B5/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B5/00</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Reciprocating-piston machines or engines with cylinder axes arranged substantially tangentially to a circle centred on main shaft axis</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F01B5/003" definition-exists="true" ipc-concordant="F01B5/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B5/003</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>the connection of the pistons with an actuated or actuating element being at the outer ends of the cylinders</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="F01B5/006" definition-exists="true" ipc-concordant="F01B5/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B5/006</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>the connection of the pistons with an actuated or actuating element being at the inner ends of the cylinders</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="F01B7/00" definition-exists="true" ipc-concordant="F01B7/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B7/00</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Machines or engines with two or more pistons reciprocating within same cylinder or within essentially coaxial cylinders </text><reference><text>in opposite arrangement relative to main shaft <class-ref scheme="cpc">F01B1/08</class-ref></text></reference></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F01B7/02" definition-exists="true" ipc-concordant="F01B7/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B7/02</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>with oppositely reciprocating pistons</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F01B7/04" definition-exists="false" ipc-concordant="F01B7/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B7/04</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>acting on same main shaft</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="F01B7/06" definition-exists="true" ipc-concordant="F01B7/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2016-08-01" status="published"><classification-symbol>F01B7/06</classification-symbol><class-title date-revised="2016-08-01"><title-part><text>using only connecting-rods for conversion of reciprocatory into rotary motion or <u>vice versa</u></text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="F01B7/08" definition-exists="true" ipc-concordant="F01B7/08" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B7/08</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>with side rods</text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="F01B7/10" definition-exists="true" ipc-concordant="F01B7/10" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B7/10</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>having piston-rod of one piston passed through other piston</text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="F01B7/12" definition-exists="true" ipc-concordant="F01B7/12" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B7/12</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>using rockers and connecting-rods</text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F01B7/14" definition-exists="true" ipc-concordant="F01B7/14" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B7/14</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>acting on different main shafts</text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F01B7/16" definition-exists="true" ipc-concordant="F01B7/16" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B7/16</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>with pistons synchronously moving in tandem arrangement</text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F01B7/18" definition-exists="true" ipc-concordant="F01B7/18" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B7/18</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>with differential piston </text><reference><text><class-ref scheme="cpc">F01B7/20</class-ref> takes precedence</text></reference></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F01B7/20" definition-exists="true" ipc-concordant="F01B7/20" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B7/20</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>with two or more pistons reciprocating one within another, e.g. one piston forming cylinder of the other</text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="7" additional-only="false" sort-key="F01B9/00" definition-exists="true" ipc-concordant="F01B9/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B9/00</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Reciprocating-piston machines or engines characterised by connections between pistons and main shafts and not specific to preceding groups </text><reference><text>connections disengageable during idling <class-ref scheme="cpc">F01B31/24</class-ref></text></reference></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F01B9/02" definition-exists="true" ipc-concordant="F01B9/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B9/02</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>with crankshaft</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F01B9/023" definition-exists="true" ipc-concordant="F01B9/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B9/023</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>of Bourke-type or Scotch yoke</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="F01B9/026" definition-exists="false" ipc-concordant="F01B9/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B9/026</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Rigid connections between piston and rod; Oscillating pistons</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="F01B9/04" definition-exists="true" ipc-concordant="F01B9/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B9/04</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>with rotary main shaft other than crankshaft</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F01B9/042" definition-exists="true" ipc-concordant="F01B9/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B9/042</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>the connections comprising gear transmissions</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="F01B9/045" definition-exists="false" ipc-concordant="F01B9/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B2009/045</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Planetary gearings</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="F01B9/047" definition-exists="true" ipc-concordant="F01B9/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B9/047</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>with rack and pinion</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="F01B9/06" definition-exists="true" ipc-concordant="F01B9/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B9/06</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>the piston motion being transmitted by curved surfaces</text></title-part></class-title>
<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="F01B9/061" definition-exists="false" ipc-concordant="F01B9/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B2009/061</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>by cams</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="true" not-allocatable="false" level="11" additional-only="true" sort-key="F01B9/063" definition-exists="false" ipc-concordant="F01B9/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B2009/063</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Mono-lobe cams</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="11" additional-only="true" sort-key="F01B9/065" definition-exists="false" ipc-concordant="F01B9/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B2009/065</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Bi-lobe cams</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="11" additional-only="true" sort-key="F01B9/066" definition-exists="false" ipc-concordant="F01B9/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B2009/066</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Tri-lobe cams</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="11" additional-only="true" sort-key="F01B9/068" definition-exists="false" ipc-concordant="F01B9/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B2009/068</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Quadri-lobe cams</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="F01B9/08" definition-exists="true" ipc-concordant="F01B9/08" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B9/08</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>with ratchet and pawl</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="F01B11/00" definition-exists="true" ipc-concordant="F01B11/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B11/00</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Reciprocating-piston machines or engines without rotary main shaft, e.g. of free-piston type</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F01B11/001" definition-exists="true" ipc-concordant="F01B11/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B11/001</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>in which the movement in the two directions is obtained by one double acting piston motor</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F01B11/002" definition-exists="true" ipc-concordant="F01B11/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B11/002</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>one side of the double acting piston motor being always under the influence of the fluid under pressure</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="F01B11/003" definition-exists="true" ipc-concordant="F01B11/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B11/003</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>the fluid under pressure being continuously delivered to one motor chamber and reacting the other chamber through a valve located in the piston, to bring the piston back in its start-position</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="F01B11/004" definition-exists="true" ipc-concordant="F01B11/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B11/004</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>in which the movement in the two directions is obtained by two single acting piston motors, each acting in one direction</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="F01B11/005" definition-exists="false" ipc-concordant="F01B11/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B2011/005</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>with oscillating pistons, i.e. the pistons are arranged in ring like cylinder sections and oscillate with respect to the center of the ring</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="F01B11/006" definition-exists="true" ipc-concordant="F01B11/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B11/006</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>one single acting piston motor being always under the influence of the fluid under pressure</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="F01B11/007" definition-exists="true" ipc-concordant="F01B11/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B11/007</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>in which the movement in only one direction is obtained by a single acting piston motor, e.g. with actuation in the other direction by spring means</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F01B11/008" definition-exists="true" ipc-concordant="F01B11/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B11/008</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>with actuation in the other direction by gravity</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="F01B11/009" definition-exists="true" ipc-concordant="F01B11/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B11/009</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>in which the movement in two directions is obtained by two or more double acting piston motors</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="F01B11/02" definition-exists="true" ipc-concordant="F01B11/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B11/02</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Equalising or cushioning devices</text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F01B11/04" definition-exists="true" ipc-concordant="F01B11/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B11/04</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Engines combined with reciprocatory driven devices, e.g. hammers </text><reference><text>with pumps <class-ref scheme="cpc">F01B23/08</class-ref>; predominating aspects of driven devices, <u>see</u> the relevant classes for the devices</text></reference></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F01B11/06" definition-exists="true" ipc-concordant="F01B11/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B11/06</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>for generating vibration only</text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F01B11/08" definition-exists="true" ipc-concordant="F01B11/08" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B11/08</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>with direct fluid transmission link </text><reference><text><class-ref scheme="cpc">F01B11/02</class-ref> takes precedence</text></reference></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="7" additional-only="false" sort-key="F01B13/00" definition-exists="true" ipc-concordant="F01B13/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B13/00</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Reciprocating-piston machines or engines with rotating cylinders in order to obtain the reciprocating-piston motion </text><reference><text>machines or engines of flexible-wall type <class-ref scheme="cpc">F01B19/00</class-ref></text></reference></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F01B13/02" definition-exists="true" ipc-concordant="F01B13/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B13/02</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>with one cylinder only</text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F01B13/04" definition-exists="true" ipc-concordant="F01B13/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B13/04</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>with more than one cylinder </text><CPC-specific-text><reference><text><class-ref scheme="cpc">F01B3/0032</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="F01B13/045" definition-exists="true" ipc-concordant="F01B13/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B13/045</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>with cylinder axes arranged substantially tangentially to a circle centred on main shaft axis</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="F01B13/06" definition-exists="false" ipc-concordant="F01B13/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B13/06</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>in star arrangement</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="F01B13/061" definition-exists="true" ipc-concordant="F01B13/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B13/061</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>the connection of the pistons with the actuated or actuating element being at the outer ends of the cylinders</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="F01B13/062" definition-exists="false" ipc-concordant="F01B13/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B13/062</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>cylinder block and actuating or actuated cam both rotating </text><reference><text><class-ref scheme="cpc">F01B13/064</class-ref> and <class-ref scheme="cpc">F01B13/066</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="F01B13/063" definition-exists="false" ipc-concordant="F01B13/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B13/063</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>with two or more series radial piston-cylinder units</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="12" additional-only="false" sort-key="F01B13/064" definition-exists="false" ipc-concordant="F01B13/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B13/064</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>cylinder block and actuating or actuated cam both rotating </text><reference><text><class-ref scheme="cpc">F01B13/066</class-ref> takes precedence</text></reference></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="12" additional-only="false" sort-key="F01B13/065" definition-exists="false" ipc-concordant="F01B13/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B13/065</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>directly located side by side</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="13" additional-only="false" sort-key="F01B13/066" definition-exists="false" ipc-concordant="F01B13/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B13/066</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>cylinder block and actuating or actuated cam both rotating</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="F01B13/067" definition-exists="false" ipc-concordant="F01B13/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B13/067</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>with pistons and cylinders having two different parallel axis of rotation</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="F01B13/068" definition-exists="true" ipc-concordant="F01B13/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B13/068</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>the connection of the pistons with an actuated or actuating element being at the inner ends of the cylinders</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="F01B15/00" definition-exists="true" ipc-concordant="F01B15/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B15/00</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Reciprocating-piston machines or engines with movable cylinders other than provided for in group <class-ref scheme="cpc">F01B13/00</class-ref> </text><reference><text>with movable cylinder sleeves for working fluid control <class-ref scheme="cpc">F01L</class-ref></text></reference></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F01B15/002" definition-exists="false" ipc-concordant="F01B15/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B15/002</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>having cylinders in star or fan arrangement, the connection of the pistons with the actuated or actuating element being at the outer ends of the cylinders</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="F01B15/005" definition-exists="false" ipc-concordant="F01B15/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B15/005</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>having cylinders in star or fan arrangement, the connection of the pistons with the actuated or actuating element being at the inner ends of the cylinders</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="F01B15/007" definition-exists="false" ipc-concordant="F01B15/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B15/007</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>having spinning cylinders, i.e. the cylinders rotating about their longitudinal axis</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F01B15/02" definition-exists="false" ipc-concordant="F01B15/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B15/02</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>with reciprocating cylinders </text><reference><text>with one piston within another <class-ref scheme="cpc">F01B7/20</class-ref></text></reference></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F01B15/04" definition-exists="false" ipc-concordant="F01B15/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B15/04</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>with oscillating cylinder</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F01B15/06" definition-exists="false" ipc-concordant="F01B15/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B15/06</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Control of working-fluid admission or discharge peculiar thereto</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="F01B15/065" definition-exists="false" ipc-concordant="F01B15/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B15/065</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>by cam-actuated distribution members</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="F01B17/00" definition-exists="true" ipc-concordant="F01B17/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B17/00</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Reciprocating-piston machines or engines characterised by use of uniflow principle</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F01B17/02" definition-exists="true" ipc-concordant="F01B17/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B17/02</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Engines</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F01B17/022" definition-exists="true" ipc-concordant="F01B17/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B17/022</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>with fluid heating</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="F01B17/025" definition-exists="false" ipc-concordant="F01B17/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B17/025</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>using liquid air</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="F01B17/027" definition-exists="true" ipc-concordant="F01B17/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B17/027</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>using separators</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="F01B17/04" definition-exists="true" ipc-concordant="F01B17/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2016-05-01" status="published"><classification-symbol>F01B17/04</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Steam engines</text></title-part></class-title><notes-and-warnings date-revised="2013-01-01"><note type="note"><note-paragraph>in this group the following indexing codes are used: <subnote><note-paragraph><class-ref scheme="cpc">F01B2170/0411</class-ref>&#160;-&#160;<class-ref scheme="cpc">F01B2170/0494</class-ref></note-paragraph></subnote></note-paragraph></note></notes-and-warnings></classification-item></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="7" additional-only="false" sort-key="F01B19/00" definition-exists="true" ipc-concordant="F01B19/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B19/00</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Positive-displacement machines or engines of flexible-wall type</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F01B19/02" definition-exists="true" ipc-concordant="F01B19/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B19/02</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>with plate-like flexible members</text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F01B19/04" definition-exists="true" ipc-concordant="F01B19/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B19/04</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>with tubular flexible members</text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="7" additional-only="false" sort-key="F01B21/00" definition-exists="true" ipc-concordant="F01B21/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B21/00</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Combinations of two or more machines or engines </text><reference><text><class-ref scheme="cpc">F01B23/00</class-ref> takes precedence; regulating or controlling, <u>see</u> the relevant groups; combinations of two or more pumps <class-ref scheme="cpc">F04</class-ref>; fluid gearing <class-ref scheme="cpc">F16H</class-ref></text></reference></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F01B21/02" definition-exists="false" ipc-concordant="F01B21/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B21/02</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>the machines or engines being all of reciprocating-piston type</text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F01B21/04" definition-exists="false" ipc-concordant="F01B21/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B21/04</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>the machines or engines being not all of reciprocating-piston type, e.g. of reciprocating steam engine with steam turbine</text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="7" additional-only="false" sort-key="F01B23/00" definition-exists="true" ipc-concordant="F01B23/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B23/00</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Adaptations of machines or engines for special use</text></title-part><title-part><text>Combinations of engines with devices driven thereby </text><reference><text><class-ref scheme="cpc">F01B11/00</class-ref> takes precedence; fluid gearing <class-ref scheme="cpc">F16H</class-ref>; aspects predominantly concerning driven devices, <u>see</u> the relevant classes for these devices; regulating or controlling, <u>see</u> the relevant groups</text></reference></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F01B23/02" definition-exists="false" ipc-concordant="F01B23/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B23/02</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Adaptations for driving vehicles, e.g. locomotives </text><reference><text>arrangements in vehicles, <u>see</u> the relevant classes for vehicles</text></reference></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F01B23/04" definition-exists="false" ipc-concordant="F01B23/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B23/04</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>the vehicles being waterborne vessels</text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F01B23/06" definition-exists="false" ipc-concordant="F01B23/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B23/06</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Adaptations for driving, or combinations with, hand-held tools or the like</text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F01B23/08" definition-exists="false" ipc-concordant="F01B23/08" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B23/08</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Adaptations for driving, or combinations with, pumps</text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F01B23/10" definition-exists="false" ipc-concordant="F01B23/10" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B23/10</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Adaptations for driving, or combinations with, electric generators</text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F01B23/12" definition-exists="false" ipc-concordant="F01B23/12" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B23/12</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Adaptations for driving rolling mills or other heavy reversing machinery</text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="7" additional-only="false" sort-key="F01B25/00" definition-exists="true" ipc-concordant="F01B25/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2016-05-01" status="published"><classification-symbol>F01B25/00</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Regulating, controlling, or safety means </text><reference><text>regulating or controlling in general <class-ref scheme="cpc">G05</class-ref></text></reference></title-part></class-title><notes-and-warnings date-revised="2013-01-01"><note type="note"><note-paragraph>in this group the following indexing codes are used: <subnote><note-paragraph><class-ref scheme="cpc">F01B2250/001</class-ref>&#160;-&#160;<class-ref scheme="cpc">F01B2250/009</class-ref></note-paragraph></subnote></note-paragraph></note></notes-and-warnings>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F01B25/02" definition-exists="false" ipc-concordant="F01B25/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B25/02</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Regulating or controlling by varying working-fluid admission or exhaust, e.g. by varying pressure or quantity </text><reference><text>distributing or expansion valve gear <class-ref scheme="cpc">F01L</class-ref></text></reference></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F01B25/04" definition-exists="false" ipc-concordant="F01B25/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B25/04</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Sensing elements</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="F01B25/06" definition-exists="false" ipc-concordant="F01B25/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B25/06</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>responsive to speed</text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F01B25/08" definition-exists="false" ipc-concordant="F01B25/08" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B25/08</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Final actuators</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="F01B25/10" definition-exists="false" ipc-concordant="F01B25/10" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B25/10</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Arrangements or adaptations of working-fluid admission or discharge valves </text><reference><text>valves in general <class-ref scheme="cpc">F16K</class-ref></text></reference></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F01B25/12" definition-exists="false" ipc-concordant="F01B25/12" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B25/12</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Devices dealing with sensing elements or final actuators or transmitting means between them, e.g. power-assisted </text><reference><text>sensing elements alone <class-ref scheme="cpc">F01B25/04</class-ref>; final actuators alone <class-ref scheme="cpc">F01B25/08</class-ref></text></reference></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F01B25/14" definition-exists="false" ipc-concordant="F01B25/14" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B25/14</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>peculiar to particular kinds of machines or engines</text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F01B25/16" definition-exists="false" ipc-concordant="F01B25/16" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B25/16</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Safety means responsive to specific conditions </text><reference><text>against water hammer or the like in steam engines <class-ref scheme="cpc">F01B31/34</class-ref></text></reference></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F01B25/18" definition-exists="false" ipc-concordant="F01B25/18" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B25/18</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>preventing rotation in wrong direction</text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F01B25/20" definition-exists="false" ipc-concordant="F01B25/20" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B25/20</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Checking operation on safety devices</text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F01B25/22" definition-exists="false" ipc-concordant="F01B25/22" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B25/22</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Braking by redirecting working-fluid</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F01B25/24" definition-exists="false" ipc-concordant="F01B25/24" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B25/24</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>thereby regenerating energy</text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F01B25/26" definition-exists="false" ipc-concordant="F01B25/26" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B25/26</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Warning devices</text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="7" additional-only="false" sort-key="F01B27/00" definition-exists="true" ipc-concordant="F01B27/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B27/00</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Starting of machines or engines </text><reference><text>starting combustion engines <class-ref scheme="cpc">F02N</class-ref></text></reference></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F01B27/02" definition-exists="false" ipc-concordant="F01B27/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B27/02</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>of reciprocating-piston engines</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F01B27/04" definition-exists="false" ipc-concordant="F01B27/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B27/04</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>by directing working-fluid supply, e.g. by aid of by-pass steam conduits</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="F01B27/06" definition-exists="false" ipc-concordant="F01B27/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B27/06</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>specially for compound engines</text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F01B27/08" definition-exists="false" ipc-concordant="F01B27/08" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B27/08</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Means for moving crank off dead-centre </text><reference><text>turning-gear in general <class-ref scheme="cpc">F16H</class-ref></text></reference></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="F01B29/00" definition-exists="false" ipc-concordant="F01B29/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B29/00</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Machines or engines with pertinent characteristics other than those provided for in preceding main groups</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F01B29/02" definition-exists="false" ipc-concordant="F01B29/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B29/02</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Atmospheric engines, i.e. atmosphere acting against vacuum</text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F01B29/04" definition-exists="false" ipc-concordant="F01B29/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B29/04</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>characterised by means for converting from one type to a different one</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F01B29/06" definition-exists="false" ipc-concordant="F01B29/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B29/06</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>from steam engine into combustion engine</text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F01B29/08" definition-exists="false" ipc-concordant="F01B29/08" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B29/08</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Reciprocating-piston machines or engines not otherwise provided for</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F01B29/10" definition-exists="false" ipc-concordant="F01B29/10" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B29/10</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Engines </text><reference><text>refrigeration machines <class-ref scheme="cpc">F25B</class-ref></text></reference></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="F01B29/12" definition-exists="false" ipc-concordant="F01B29/12" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B29/12</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Steam engines </text><reference><text>toy steam engines <class-ref scheme="cpc">A63H29/16</class-ref></text></reference></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="F01B31/00" definition-exists="true" ipc-concordant="F01B31/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B31/00</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Component parts, details, or accessories not provided for in, or of interest apart from, other groups </text><reference><text>machine or engine casings, other than those peculiar to steam engines, <class-ref scheme="cpc">F16M</class-ref></text></reference></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F01B31/005" definition-exists="false" ipc-concordant="F01B31/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B31/005</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Silencing equipment </text><reference><text>silencing for steam engines <class-ref scheme="cpc">F01B31/16</class-ref></text></reference></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F01B31/02" definition-exists="false" ipc-concordant="F01B31/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B31/02</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>De-icing means for engines having icing phenomena</text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F01B31/04" definition-exists="false" ipc-concordant="F01B31/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B31/04</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Means for equalising torque in reciprocating-piston machines or engines </text><reference><text>compensation of inertial forces, suppression of vibration in systems <class-ref scheme="cpc">F16F</class-ref></text></reference></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F01B31/06" definition-exists="false" ipc-concordant="F01B31/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B31/06</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Means for compensating relative expansion of component parts</text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F01B31/08" definition-exists="false" ipc-concordant="F01B31/08" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B31/08</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Cooling of steam engines </text><reference><text>cooling of fluid 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>Heat insulation </text><reference><text>heat insulation in general <class-ref scheme="cpc">F16L59/00</class-ref></text></reference></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F01B31/10" definition-exists="false" ipc-concordant="F01B31/10" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B31/10</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Lubricating arrangements of steam engines </text><reference><text>of fluid machines or engines in general <class-ref scheme="cpc">F01M</class-ref></text></reference></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F01B31/12" definition-exists="false" ipc-concordant="F01B31/12" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B31/12</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Arrangements of measuring or indicating devices </text><reference><text>warning apparatus <class-ref scheme="cpc">F01B25/26</class-ref>; measuring instruments or the like <u>per se</u> <class-ref scheme="cpc">G01</class-ref></text></reference></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F01B31/14" definition-exists="false" ipc-concordant="F01B31/14" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B31/14</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Changing of compression ratio</text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F01B31/16" definition-exists="false" ipc-concordant="F01B31/16" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B31/16</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Silencers specially adapted for steam engines </text><reference><text>arrangements of exhaust pipes or tubes on steam engines <class-ref scheme="cpc">F01B31/30</class-ref>; gas-flow silencers or exhaust silencers for machines or engines in general <class-ref scheme="cpc">F01N</class-ref></text></reference></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F01B31/18" definition-exists="false" ipc-concordant="F01B31/18" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B31/18</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Draining</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F01B31/20" definition-exists="false" ipc-concordant="F01B31/20" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B31/20</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>of cylinders</text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F01B31/22" definition-exists="false" ipc-concordant="F01B31/22" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B31/22</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Idling devices, e.g. having by-passing valves</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F01B31/24" definition-exists="false" ipc-concordant="F01B31/24" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B31/24</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Disengagement of connections between pistons and main shafts</text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F01B31/26" definition-exists="false" ipc-concordant="F01B31/26" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B31/26</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Other component parts, details, or accessories, peculiar to steam engines</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F01B31/28" definition-exists="false" ipc-concordant="F01B31/28" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B31/28</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Cylinders or cylinder covers</text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F01B31/30" definition-exists="false" ipc-concordant="F01B31/30" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B31/30</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Arrangements of steam conduits</text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F01B31/32" definition-exists="false" ipc-concordant="F01B31/32" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B31/32</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Arrangements or adaptations of vacuum breakers</text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F01B31/34" definition-exists="false" ipc-concordant="F01B31/34" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B31/34</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Safety means against water hammers or against the penetration of water </text><reference><text>steam traps <class-ref scheme="cpc">F16T</class-ref></text></reference></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="F01B31/36" definition-exists="false" ipc-concordant="F01B31/36" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B31/36</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>automatically cutting-off steam supply</text></title-part></class-title></classification-item></classification-item></classification-item></classification-item></classification-item>
<classification-item breakdown-code="true" not-allocatable="true" level="6" additional-only="true" sort-key="F01B170/00" date-revised="2013-01-01" status="published"><classification-symbol>F01B2170/00</classification-symbol>
<classification-item breakdown-code="true" not-allocatable="false" level="7" additional-only="true" sort-key="F01B170/00" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B2170/00</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Steam engines, e.g. for locomotives or ships</text></title-part></class-title>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F01B170/04" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B2170/04</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>To-be-deleted with administrative transfer to parent group</text></title-part></class-title>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="F01B170/0405" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B2170/0405</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>To-be-deleted with administrative transfer to parent group</text></title-part></class-title>
<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="F01B170/0411" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B2170/0411</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>for locomotives</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="F01B170/0417" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B2170/0417</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>for locomobiles driven by small motors</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="F01B170/0423" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B2170/0423</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Single acting steam engines with 1, 2 or 3 cylinders</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="F01B170/0429" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B2170/0429</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Double acting high pressure machines</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="F01B170/0435" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B2170/0435</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Compound machines with double or plural expansion</text></title-part><title-part><text>Auxiliaries driven by main engine</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="F01B170/0441" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B2170/0441</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Compound engines with monolytic pistons in same cylinder</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="F01B170/0447" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B2170/0447</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Machines with more than one piston in a cylinder and with counter moving pistons</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="F01B170/0452" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B2170/0452</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Engines without connecting rods</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="F01B170/0458" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B2170/0458</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Moving cylinders for steam engines, e.g. with telescopic cylinder arrangements</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="F01B170/0464" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B2170/0464</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Oscillating cylinders for steam engines</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="F01B170/047" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2017-05-01" status="published"><classification-symbol>F01B2170/047</classification-symbol><class-title date-revised="2017-05-01"><title-part><text>General arrangements for steam engines</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="F01B170/0476" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B2170/0476</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Components or parts for steam engines</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="F01B170/0482" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B2170/0482</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>with toroidal cylinder space</text></title-part></class-title>
<classification-item breakdown-code="true" not-allocatable="false" level="11" additional-only="true" sort-key="F01B170/0488" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B2170/0488</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>To-be-deleted with administrative transfer to parent group</text></title-part></class-title>
<classification-item breakdown-code="true" not-allocatable="false" level="12" additional-only="true" sort-key="F01B170/0494" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B2170/0494</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>with fixed cylinder space</text></title-part></class-title></classification-item></classification-item></classification-item></classification-item></classification-item></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="7" additional-only="true" sort-key="F01B250/00" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B2250/00</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Accessories of steam engines</text></title-part><title-part><text>Arrangements or control devices of piston pumps, compressors without crank shafts or condensors for so far as they influence the functioning of the engines</text></title-part></class-title>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F01B250/001" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B2250/001</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Valves for steam inlet or outlet</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F01B250/002" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B2250/002</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Valves, brakes, control or safety devices for steam engines</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F01B250/003" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B2250/003</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Apparatus for control or receiver or condensor pressure</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F01B250/004" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B2250/004</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Devices for draining or idling of steam cylinders or for uncoupling piston and connecting rod</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F01B250/005" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B2250/005</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Oil separators for steam engines</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F01B250/006" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B2250/006</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Arrangement of or controlling of piston pumps or compressors without crank shaft</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F01B250/007" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B2250/007</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Condensing devices for steam engines</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F01B250/008" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F01B2250/008</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Surface condensors for so far as they influence the functioning of the engine</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F01B250/009" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2018-01-01" status="published"><classification-symbol>F01B2250/009</classification-symbol><class-title date-revised="2018-01-01"><title-part><text>Condenser pumps for steam engines</text></title-part></class-title></classification-item></classification-item></classification-item></classification-item></class-scheme>