ZSI_Reconnect_China/PATSTAT/CPC_data/CPCSchemeXML202302/cpc-scheme-F23L.xml

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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="F23L" definition-exists="true" date-revised="2018-08-01" status="published"><classification-symbol>F23L</classification-symbol><class-title date-revised="2018-08-01"><title-part><text>SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL&#160; </text><reference><CPC-specific-text><text>air-supply arrangements for fluent fuels <class-ref scheme="cpc">F23C</class-ref>;</text></CPC-specific-text><text> firebridges with means for feeding air or steam&#160;<class-ref scheme="cpc">F23M3/04</class-ref>; baffles or shields with air supply passages&#160;<class-ref scheme="cpc">F23M9/04</class-ref></text></reference></title-part><title-part><text>VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS </text><CPC-specific-text><reference><text>dampers and throat restrictors for open fire-places <class-ref scheme="cpc">F24</class-ref>; air inlet valves for open fire fronts <class-ref scheme="cpc">F24</class-ref></text></reference></CPC-specific-text></title-part><title-part><text>INDUCING DRAUGHT IN COMBUSTION APPARATUS</text></title-part><title-part><text>TOPS FOR CHIMNEYS OR VENTILATING SHAFTS</text></title-part><title-part><text>TERMINALS FOR FLUES</text></title-part></class-title><notes-and-warnings><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="F23L1/00" date-revised="2013-01-01" status="published"><classification-symbol>F23L1/00</classification-symbol>
<classification-item breakdown-code="false" not-allocatable="false" level="7" additional-only="false" sort-key="F23L1/00" definition-exists="true" ipc-concordant="F23L1/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2021-08-01" status="published"><classification-symbol>F23L1/00</classification-symbol><class-title date-revised="2018-08-01"><title-part><text>Passages or apertures for delivering primary air for combustion&#160; </text><reference><text>baffles or deflectors in air inlets&#160;<class-ref scheme="cpc">F23M9/02</class-ref></text></reference></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F23L1/02" definition-exists="false" ipc-concordant="F23L1/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F23L1/02</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>by discharging the air below the fire</text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="7" additional-only="false" sort-key="F23L3/00" definition-exists="true" ipc-concordant="F23L3/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F23L3/00</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Arrangements of valves or dampers before the fire</text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="7" additional-only="false" sort-key="F23L5/00" definition-exists="true" ipc-concordant="F23L5/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F23L5/00</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Blast-producing apparatus before the fire</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F23L5/02" definition-exists="true" ipc-concordant="F23L5/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2018-08-01" status="published"><classification-symbol>F23L5/02</classification-symbol><class-title date-revised="2018-08-01"><title-part><text>Arrangements of fans or blowers</text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F23L5/04" definition-exists="false" ipc-concordant="F23L5/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F23L5/04</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>by induction of air for combustion, e.g. using steam jet</text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="7" additional-only="false" sort-key="F23L7/00" definition-exists="true" ipc-concordant="F23L7/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F23L7/00</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Supplying non-combustible liquids or gases, other than air, to the fire, e.g. oxygen, steam</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F23L7/002" definition-exists="false" ipc-concordant="F23L7/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F23L7/002</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Supplying water</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F23L7/005" definition-exists="false" ipc-concordant="F23L7/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F23L7/005</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Evaporated water; Steam</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="F23L7/007" definition-exists="false" ipc-concordant="F23L7/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F23L7/007</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Supplying oxygen or oxygen-enriched air</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="F23L9/00" definition-exists="true" ipc-concordant="F23L9/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2021-08-01" status="published"><classification-symbol>F23L9/00</classification-symbol><class-title date-revised="2018-08-01"><title-part><text>Passages or apertures for delivering secondary air for completing combustion of fuel&#160; </text><reference><text>baffles or deflectors in air inlets&#160;<class-ref scheme="cpc">F23M9/02</class-ref></text></reference></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F23L9/02" definition-exists="false" ipc-concordant="F23L9/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F23L9/02</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>by discharging the air above the fire</text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F23L9/04" definition-exists="false" ipc-concordant="F23L9/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F23L9/04</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>by discharging the air beyond the fire, i.e. nearer the smoke outlet</text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F23L9/06" definition-exists="false" ipc-concordant="F23L9/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F23L9/06</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>by discharging the air into the fire bed</text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="7" additional-only="false" sort-key="F23L11/00" definition-exists="true" ipc-concordant="F23L11/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F23L11/00</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Arrangements of valves or dampers after the fire</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F23L11/005" definition-exists="false" ipc-concordant="F23L11/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F23L11/005</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>for closing the flue during interruption of burner function</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="F23L11/02" definition-exists="false" ipc-concordant="F23L11/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F23L11/02</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>for reducing draught by admission of air to flues</text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="7" additional-only="false" sort-key="F23L13/00" definition-exists="true" ipc-concordant="F23L13/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2018-08-01" status="published"><classification-symbol>F23L13/00</classification-symbol><class-title date-revised="2018-08-01"><title-part><text>Construction of valves or dampers for controlling air supply or draught</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F23L13/02" definition-exists="true" ipc-concordant="F23L13/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F23L13/02</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>pivoted about a single axis but having not other movement </text><reference><text>formed as linked slats each pivoted about an axis <class-ref scheme="cpc">F23L13/08</class-ref></text></reference></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F23L13/04" definition-exists="false" ipc-concordant="F23L13/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F23L13/04</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>with axis perpendicular to face</text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F23L13/06" definition-exists="false" ipc-concordant="F23L13/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F23L13/06</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>slidable only</text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F23L13/08" definition-exists="false" ipc-concordant="F23L13/08" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F23L13/08</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>operating as a roller blind</text></title-part><title-part><text>operating as a venetian blind</text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F23L13/10" definition-exists="false" ipc-concordant="F23L13/10" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F23L13/10</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>having a compound movement involving both sliding and pivoting</text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="7" additional-only="false" sort-key="F23L15/00" definition-exists="true" ipc-concordant="F23L15/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F23L15/00</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Heating of air supplied for combustion</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F23L15/02" definition-exists="false" ipc-concordant="F23L15/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F23L15/02</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Arrangements of regenerators</text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F23L15/04" definition-exists="false" ipc-concordant="F23L15/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F23L15/04</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Arrangements of recuperators</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F23L15/045" definition-exists="false" ipc-concordant="F23L15/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F23L15/045</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>using intermediate heat-transfer fluids</text></CPC-specific-text></title-part></class-title></classification-item></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="7" additional-only="false" sort-key="F23L17/00" definition-exists="true" ipc-concordant="F23L17/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2018-08-01" status="published"><classification-symbol>F23L17/00</classification-symbol><class-title date-revised="2018-08-01"><title-part><text>Inducing draught</text></title-part><title-part><text>Tops for chimneys or ventilating shafts</text></title-part><title-part><text>Terminals for flues</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F23L17/005" definition-exists="false" ipc-concordant="F23L17/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F23L17/005</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>using fans</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F23L17/02" definition-exists="false" ipc-concordant="F23L17/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F23L17/02</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Tops for chimneys or ventilating shafts</text></title-part><title-part><text>Terminals for flues</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F23L17/04" definition-exists="false" ipc-concordant="F23L17/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F23L17/04</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Balanced-flue arrangements, i.e. devices which combine air inlet to combustion unit with smoke outlet</text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F23L17/06" definition-exists="false" ipc-concordant="F23L17/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F23L17/06</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>branched</text></title-part><title-part><text>T-headed</text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F23L17/08" definition-exists="false" ipc-concordant="F23L17/08" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2017-08-01" status="published"><classification-symbol>F23L17/08</classification-symbol><class-title date-revised="2017-08-01"><title-part><text>with coaxial cones or louvres</text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F23L17/10" definition-exists="false" ipc-concordant="F23L17/10" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F23L17/10</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>wherein the top moves as a whole</text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F23L17/12" definition-exists="false" ipc-concordant="F23L17/12" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F23L17/12</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Devices for fastening the top or terminal to chimney, shaft, or flue</text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F23L17/14" definition-exists="false" ipc-concordant="F23L17/14" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F23L17/14</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Draining devices</text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F23L17/16" definition-exists="false" ipc-concordant="F23L17/16" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F23L17/16</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Induction apparatus, e.g. steam jet, acting on combustion products beyond the fire</text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="7" additional-only="false" sort-key="F23L99/00" definition-exists="true" ipc-concordant="F23L99/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F23L99/00</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Subject matter not provided for in other groups of this subclass</text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="true" not-allocatable="true" level="6" additional-only="true" sort-key="F23L700/00" date-revised="2013-01-01" status="published"><classification-symbol>F23L2700/00</classification-symbol>
<classification-item breakdown-code="true" not-allocatable="false" level="7" additional-only="true" sort-key="F23L700/00" 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>F23L2700/00</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Installations for increasing draught in chimneys</text></title-part><title-part><text>Specific draught control devices for locomotives</text></title-part></class-title>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F23L700/001" 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>F23L2700/001</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Installations for increasing draught in chimneys</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F23L700/002" 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>F23L2700/002</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Specific draught control devices for locomotives</text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="7" additional-only="true" sort-key="F23L900/00" 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>F23L2900/00</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Special arrangements for supplying or treating air or oxidant for combustion</text></title-part><title-part><text>Injecting inert gas, water or steam into the combustion chamber</text></title-part></class-title>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F23L900/00001" 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>F23L2900/00001</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Treating oxidant before combustion, e.g. by adding a catalyst</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F23L900/05021" 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>F23L2900/05021</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Gas turbine driven blowers for supplying combustion air or oxidant, i.e. turbochargers</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F23L900/07001" 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>F23L2900/07001</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Injecting synthetic air, i.e. a combustion supporting mixture made of pure oxygen and an inert gas, e.g. nitrogen or recycled fumes</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F23L900/07002" 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>F23L2900/07002</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Injecting inert gas, other than steam or evaporated water, into the combustion chambers</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F23L900/07003" 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>F23L2900/07003</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Controlling the inert gas supply</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F23L900/07004" 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>F23L2900/07004</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Injecting liquid or solid materials releasing oxygen, e.g. perchlorate, nitrate, peroxide, and chlorate compounds, or appropriate mixtures thereof</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F23L900/07005" 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>F23L2900/07005</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Injecting pure oxygen or oxygen enriched air</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F23L900/07006" 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>F23L2900/07006</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Control of the oxygen supply</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F23L900/07007" 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>F23L2900/07007</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>using specific ranges of oxygen percentage</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F23L900/07008" 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>F23L2900/07008</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Injection of water into the combustion chamber</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F23L900/07009" 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>F23L2900/07009</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Injection of steam into the combustion chamber</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F23L900/15021" 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>F23L2900/15021</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>using regenerative heat exchanger bodies with different layers of material</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F23L900/15022" 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>F23L2900/15022</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>using pre-purging regenerator beds</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F23L900/15041" 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>F23L2900/15041</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Preheating combustion air by recuperating heat from ashes</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F23L900/15042" 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>F23L2900/15042</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Preheating combustion air by auxiliary combustion, e.g. in a turbine</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F23L900/15043" 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>F23L2900/15043</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Preheating combustion air by heat recovery means located in the chimney, e.g. for home heating devices</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F23L900/15044" 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>F23L2900/15044</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Preheating combustion air by heat recovery means using solar or other clean energy</text></title-part></class-title></classification-item></classification-item></classification-item></classification-item></class-scheme>