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94 lines
50 KiB
XML
<?xml version="1.0" encoding="UTF-8"?>
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<class-scheme publication-date="2023-02-01" scheme-type="cpc" publication-type="official">
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<classification-item breakdown-code="false" not-allocatable="true" level="5" additional-only="false" sort-key="F23B" definition-exists="true" date-revised="2020-05-01" status="published"><classification-symbol>F23B</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>METHODS OR APPARATUS FOR COMBUSTION USING ONLY SOLID FUEL </text><reference><text>for combustion of fuels that are solid at room temperatures, but burned in melted form, e.g. candle wax, <class-ref scheme="cpc">C11C5/00</class-ref>, <class-ref scheme="cpc">F23C</class-ref>, <class-ref scheme="cpc">F23D</class-ref>; using solid fuel suspended in air <class-ref scheme="cpc">F23C</class-ref>, <class-ref scheme="cpc">F23D1/00</class-ref>; using solid fuel suspended in liquids <class-ref scheme="cpc">F23C</class-ref>, <class-ref scheme="cpc">F23D11/00</class-ref>; using solid fuel and fluent fuel simultaneously or alternately <class-ref scheme="cpc">F23C</class-ref>, <class-ref scheme="cpc">F23D17/00</class-ref>; burning of low grade fuel <class-ref scheme="cpc">F23G</class-ref>; grates <class-ref scheme="cpc">F23H</class-ref>; feeding solid fuel to combustion apparatus <class-ref scheme="cpc">F23K</class-ref>; combustion chambers, not otherwise provided for <class-ref scheme="cpc">F23M</class-ref>; domestic apparatus <class-ref scheme="cpc">F24</class-ref>; central heating boilers <class-ref scheme="cpc">F24D</class-ref>; package boilers <class-ref scheme="cpc">F24H</class-ref></text></reference></title-part></class-title><notes-and-warnings date-revised="2013-01-01"><note type="note"><note-paragraph>This subclass only covers combustion wherein the main body of fuel is either essentially stationary during combustion or mechanically transported, as opposed to pneumatically transported or suspended in air, during combustion.</note-paragraph><note-paragraph>In this subclass, the first place priority rule is applied, i.e. at each hierarchical level, in the absence of an indication to the contrary, classification is made in the first appropriate place.</note-paragraph><note-paragraph>In this subclass, methods are classified in the groups that cover the apparatus used. Methods that are not related to a particular type of apparatus are classified in group <class-ref scheme="cpc">F23B90/00</class-ref>.</note-paragraph><note-paragraph> In this subclass, it is desirable to add the indexing codes of groups <class-ref scheme="cpc">F23B2101/00</class-ref> - <class-ref scheme="cpc">F23B2900/00</class-ref>.</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>
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<classification-item breakdown-code="false" not-allocatable="true" level="6" additional-only="false" sort-key="F23B1/00" date-revised="2013-01-01" status="published"><classification-symbol>F23B1/00</classification-symbol>
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<classification-item breakdown-code="false" not-allocatable="false" level="7" additional-only="false" sort-key="F23B1/00" definition-exists="true" ipc-concordant="F23B30/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2016-11-01" status="published"><classification-symbol>F23B1/00</classification-symbol><class-title date-revised="2016-11-01"><title-part><CPC-specific-text><text>Combustion apparatus using only lump fuel</text></CPC-specific-text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F23B1/02" definition-exists="false" ipc-concordant="F23B30/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2016-11-01" status="published"><classification-symbol>F23B1/02</classification-symbol><class-title date-revised="2016-11-01"><title-part><CPC-specific-text><text>for indirect heating of a medium in a vessel, e.g. for boiling water </text><reference><text>steam generation <class-ref scheme="cpc">F22</class-ref></text></reference></CPC-specific-text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F23B1/04" definition-exists="false" ipc-concordant="F23B30/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2016-11-01" status="published"><classification-symbol>F23B1/04</classification-symbol><class-title date-revised="2016-11-01"><title-part><CPC-specific-text><text>External furnaces, i.e. with furnace in front of the vessel</text></CPC-specific-text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="F23B1/06" definition-exists="false" ipc-concordant="F23B30/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2016-11-01" status="published"><classification-symbol>F23B1/06</classification-symbol><class-title date-revised="2016-11-01"><title-part><CPC-specific-text><text>for heating water-tube boilers, e.g. Tenbrink flue furnaces</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F23B1/08" definition-exists="false" ipc-concordant="F23B30/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2016-11-01" status="published"><classification-symbol>F23B1/08</classification-symbol><class-title date-revised="2016-11-01"><title-part><CPC-specific-text><text>Internal furnaces, i.e. with furnaces inside the vessel</text></CPC-specific-text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="F23B1/10" definition-exists="false" ipc-concordant="F23B30/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2016-11-01" status="published"><classification-symbol>F23B1/10</classification-symbol><class-title date-revised="2016-11-01"><title-part><CPC-specific-text><text>for heating locomotive boilers</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F23B1/12" definition-exists="false" ipc-concordant="F23B10/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2016-11-01" status="published"><classification-symbol>F23B1/12</classification-symbol><class-title date-revised="2016-11-01"><title-part><CPC-specific-text><text>with a plurality of combustion chambers</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F23B1/16" definition-exists="false" ipc-concordant="F23B30/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2016-11-01" status="published"><classification-symbol>F23B1/16</classification-symbol><class-title date-revised="2016-11-01"><title-part><CPC-specific-text><text>the combustion apparatus being modified according to the form of grate or other fuel support </text><reference><text>for incinerators <class-ref scheme="cpc">F23G5/002</class-ref></text></reference></CPC-specific-text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F23B1/165" definition-exists="false" ipc-concordant="F23B30/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F23B1/165</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>using roller grate</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F23B1/18" definition-exists="false" ipc-concordant="F23B30/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2016-11-01" status="published"><classification-symbol>F23B1/18</classification-symbol><class-title date-revised="2016-11-01"><title-part><CPC-specific-text><text>using inclined grate</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F23B1/20" definition-exists="false" ipc-concordant="F23B30/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2016-11-01" status="published"><classification-symbol>F23B1/20</classification-symbol><class-title date-revised="2016-11-01"><title-part><CPC-specific-text><text>using step-type grate</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F23B1/22" definition-exists="false" ipc-concordant="F23B30/08" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2016-11-01" status="published"><classification-symbol>F23B1/22</classification-symbol><class-title date-revised="2016-11-01"><title-part><CPC-specific-text><text>using travelling grate</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F23B1/24" definition-exists="false" ipc-concordant="F23B30/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2016-11-01" status="published"><classification-symbol>F23B1/24</classification-symbol><class-title date-revised="2016-11-01"><title-part><CPC-specific-text><text>using rotating grate</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F23B1/26" definition-exists="false" ipc-concordant="F23B30/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2016-11-01" status="published"><classification-symbol>F23B1/26</classification-symbol><class-title date-revised="2016-11-01"><title-part><CPC-specific-text><text>using imperforate fuel supports</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F23B1/28" definition-exists="false" ipc-concordant="F23B30/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2016-11-01" status="published"><classification-symbol>F23B1/28</classification-symbol><class-title date-revised="2016-11-01"><title-part><CPC-specific-text><text>using ridge-type grate, e.g. for combustion of peat, sawdust, or pulverulent fuel </text><reference><text>combustion of peat, sawdust <class-ref scheme="cpc">F23G7/10</class-ref></text></reference></CPC-specific-text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F23B1/30" definition-exists="false" ipc-concordant="F23B30/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2016-11-01" status="published"><classification-symbol>F23B1/30</classification-symbol><class-title date-revised="2016-11-01"><title-part><CPC-specific-text><text>characterised by the form of combustion chamber</text></CPC-specific-text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F23B1/32" definition-exists="false" ipc-concordant="F23B30/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2016-11-01" status="published"><classification-symbol>F23B1/32</classification-symbol><class-title date-revised="2016-11-01"><title-part><CPC-specific-text><text>rotating</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F23B1/34" definition-exists="false" ipc-concordant="F23B30/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2016-11-01" status="published"><classification-symbol>F23B1/34</classification-symbol><class-title date-revised="2016-11-01"><title-part><CPC-specific-text><text>annular</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F23B1/36" definition-exists="false" ipc-concordant="F23B50/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2016-11-01" status="published"><classification-symbol>F23B1/36</classification-symbol><class-title date-revised="2016-11-01"><title-part><CPC-specific-text><text>shaft-type</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F23B1/38" definition-exists="false" ipc-concordant="F23B30/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2016-11-01" status="published"><classification-symbol>F23B1/38</classification-symbol><class-title date-revised="2016-11-01"><title-part><CPC-specific-text><text>for combustion of peat, sawdust, or pulverulent fuel on a grate or other fuel support </text><reference><text>combustion of peat, sawdust <class-ref scheme="cpc">F23G7/10</class-ref></text></reference></CPC-specific-text></title-part></class-title></classification-item></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="7" additional-only="false" sort-key="F23B3/00" definition-exists="true" ipc-concordant="F23B20/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2016-11-01" status="published"><classification-symbol>F23B3/00</classification-symbol><class-title date-revised="2016-11-01"><title-part><CPC-specific-text><text>Combustion apparatus which is portable or removable with respect to the boiler or other apparatus which is heated</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="7" additional-only="false" sort-key="F23B5/00" definition-exists="true" ipc-concordant="F23B30/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2016-11-01" status="published"><classification-symbol>F23B5/00</classification-symbol><class-title date-revised="2016-11-01"><title-part><CPC-specific-text><text>Combustion apparatus with arrangements for burning uncombusted material from primary combustion </text><reference><text>combustion apparatus characterised by the combination of two or more combustion chambers <class-ref scheme="cpc">F23C6/00</class-ref>; the primary combustion being pulverulent fuel <class-ref scheme="cpc">F23C9/003</class-ref></text></reference></CPC-specific-text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F23B5/02" definition-exists="false" ipc-concordant="F23B30/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2016-11-01" status="published"><classification-symbol>F23B5/02</classification-symbol><class-title date-revised="2016-11-01"><title-part><CPC-specific-text><text>in main combustion chamber</text></CPC-specific-text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F23B5/025" definition-exists="false" ipc-concordant="F23B30/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F23B5/025</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>recirculating uncombusted solids to combustion chamber</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F23B5/04" definition-exists="false" ipc-concordant="F23B30/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2016-11-01" status="published"><classification-symbol>F23B5/04</classification-symbol><class-title date-revised="2016-11-01"><title-part><CPC-specific-text><text>in separate combustion chamber; on separate grate</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="7" additional-only="false" sort-key="F23B7/00" definition-exists="true" ipc-concordant="F23B30/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2016-11-01" status="published"><classification-symbol>F23B7/00</classification-symbol><class-title date-revised="2016-11-01"><title-part><CPC-specific-text><text>Combustion techniques; Other solid-fuel combustion apparatus</text></CPC-specific-text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F23B7/002" definition-exists="false" ipc-concordant="F23B30/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F23B7/002</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>characterised by gas flow arrangements</text></CPC-specific-text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F23B7/005" definition-exists="false" ipc-concordant="F23B30/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F23B7/005</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>with downdraught through fuel bed and grate</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F23B7/007" definition-exists="false" ipc-concordant="F23B30/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F23B7/007</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>with fluegas recirculation to combustion chamber</text></CPC-specific-text></title-part></class-title></classification-item></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="7" additional-only="false" sort-key="F23B10/00" definition-exists="true" ipc-concordant="F23B10/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F23B10/00</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Combustion apparatus characterised by the combination of two or more combustion chambers</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F23B10/02" definition-exists="true" ipc-concordant="F23B10/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2016-05-01" status="published"><classification-symbol>F23B10/02</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>including separate secondary combustion chambers</text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="7" additional-only="false" sort-key="F23B20/00" definition-exists="true" ipc-concordant="F23B20/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F23B20/00</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Combustion apparatus specially adapted for portability or transportability</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="7" additional-only="false" sort-key="F23B30/00" definition-exists="true" ipc-concordant="F23B30/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F23B30/00</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Combustion apparatus with driven means for agitating the burning fuel</text></title-part><title-part><text>Combustion apparatus with driven means for advancing the burning fuel through the combustion chamber</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F23B30/02" definition-exists="false" ipc-concordant="F23B30/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F23B30/02</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>with movable, e.g. vibratable, fuel-supporting surfaces</text></title-part><title-part><text>with fuel-supporting surfaces that have movable parts</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F23B30/04" definition-exists="true" ipc-concordant="F23B30/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F23B30/04</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>with fuel-supporting surfaces that are rotatable around a horizontal or inclined axis and support the fuel on their inside, e.g. cylindrical grates</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F23B30/06" definition-exists="false" ipc-concordant="F23B30/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2017-08-01" status="published"><classification-symbol>F23B30/06</classification-symbol><class-title date-revised="2017-08-01"><title-part><text>with fuel supporting surfaces that are specially adapted for advancing fuel through the combustion zone</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="F23B30/08" definition-exists="true" ipc-concordant="F23B30/08" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F23B30/08</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>with fuel-supporting surfaces that move through the combustion zone, e.g. with chain grates</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="F23B30/10" definition-exists="true" ipc-concordant="F23B30/10" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F23B30/10</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>with fuel-supporting surfaces having fuel advancing elements that are movable, but remain essentially in the same place, e.g. with rollers or reciprocating grate bars</text></title-part></class-title></classification-item></classification-item></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="7" additional-only="false" sort-key="F23B40/00" definition-exists="true" ipc-concordant="F23B40/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F23B40/00</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Combustion apparatus with driven means for feeding fuel into the combustion chamber</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F23B40/02" definition-exists="true" ipc-concordant="F23B40/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F23B40/02</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>the fuel being fed by scattering over the fuel-supporting surface</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F23B40/04" definition-exists="true" ipc-concordant="F23B40/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F23B40/04</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>the fuel being fed from below through an opening in the fuel-supporting surface</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F23B40/06" definition-exists="false" ipc-concordant="F23B40/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F23B40/06</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>the fuel being fed along the fuel-supporting surface</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F23B40/08" definition-exists="false" ipc-concordant="F23B40/08" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2017-08-01" status="published"><classification-symbol>F23B40/08</classification-symbol><class-title date-revised="2017-08-01"><title-part><text>into pot- or trough-shaped grates</text></title-part></class-title></classification-item></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="7" additional-only="false" sort-key="F23B50/00" definition-exists="true" ipc-concordant="F23B50/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F23B50/00</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Combustion apparatus in which the fuel is fed into or through the combustion zone by gravity, e.g. from a fuel storage situated above the combustion zone</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F23B50/02" definition-exists="false" ipc-concordant="F23B50/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F23B50/02</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>the fuel forming a column, stack or thick layer with the combustion zone at its bottom</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F23B50/04" definition-exists="false" ipc-concordant="F23B50/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F23B50/04</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>the movement of combustion air and flue gases being substantially transverse to the movement of the fuel</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F23B50/06" definition-exists="false" ipc-concordant="F23B50/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2017-08-01" status="published"><classification-symbol>F23B50/06</classification-symbol><class-title date-revised="2017-08-01"><title-part><text>the flue gases being removed downwards through one or more openings in the fuel-supporting surface</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F23B50/08" definition-exists="false" ipc-concordant="F23B50/08" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F23B50/08</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>with fuel-deflecting bodies forming free combustion spaces inside the fuel layer</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F23B50/10" definition-exists="false" ipc-concordant="F23B50/10" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F23B50/10</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>with the combustion zone at the bottom of fuel-filled conduits ending at the surface of a fuel bed</text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F23B50/12" definition-exists="false" ipc-concordant="F23B50/12" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2016-05-01" status="published"><classification-symbol>F23B50/12</classification-symbol><class-title date-revised="2016-05-01"><title-part><text>the fuel being fed to the combustion zone by free fall or by sliding along inclined surfaces, e.g. from a conveyor terminating above the fuel bed</text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="7" additional-only="false" sort-key="F23B60/00" definition-exists="true" ipc-concordant="F23B60/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F23B60/00</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Combustion apparatus in which the fuel burns essentially without moving</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F23B60/02" definition-exists="false" ipc-concordant="F23B60/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F23B60/02</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>with combustion air supplied through a grate</text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="7" additional-only="false" sort-key="F23B70/00" definition-exists="true" ipc-concordant="F23B70/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F23B70/00</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Combustion apparatus characterised by means returning solid combustion residues to the combustion chamber</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="7" additional-only="false" sort-key="F23B80/00" definition-exists="true" ipc-concordant="F23B80/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F23B80/00</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Combustion apparatus characterised by means creating a distinct flow path for flue gases or for non-combusted gases given off by the fuel</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F23B80/02" definition-exists="false" ipc-concordant="F23B80/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F23B80/02</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>by means for returning flue gases to the combustion chamber or to the combustion zone</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F23B80/04" definition-exists="true" ipc-concordant="F23B80/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F23B80/04</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>by means for guiding the flow of flue gases, e.g. baffles</text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="7" additional-only="false" sort-key="F23B90/00" definition-exists="true" ipc-concordant="F23B90/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2016-05-01" status="published"><classification-symbol>F23B90/00</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Combustion methods not related to a particular type of apparatus</text></title-part></class-title><notes-and-warnings date-revised="2013-01-01"><note type="note"><note-paragraph>Groups <class-ref scheme="cpc">F23B90/00</class-ref> - <class-ref scheme="cpc">F23B90/08</class-ref> correspond to IPC2012.01</note-paragraph></note></notes-and-warnings>
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<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F23B90/02" definition-exists="true" ipc-concordant="F23B90/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F23B90/02</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Start-up techniques</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F23B90/04" definition-exists="true" ipc-concordant="F23B90/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F23B90/04</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>including secondary combustion </text><reference><text>in separate combustion chambers <class-ref scheme="cpc">F23B10/02</class-ref></text></reference></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F23B90/06" definition-exists="true" ipc-concordant="F23B90/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F23B90/06</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>the primary combustion being a gasification or pyrolysis in a reductive atmosphere</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F23B90/08" definition-exists="true" ipc-concordant="F23B90/08" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F23B90/08</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>in the presence of catalytic material</text></title-part></class-title></classification-item></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="7" additional-only="false" sort-key="F23B99/00" definition-exists="false" ipc-concordant="F23B99/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F23B99/00</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>
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<classification-item breakdown-code="true" not-allocatable="true" level="6" additional-only="true" sort-key="F23B101/00" date-revised="2019-05-01" status="published"><classification-symbol>F23B2101/00</classification-symbol><class-title date-revised="2019-05-01"><title-part><text>Indexing scheme related to adaptation of combustion apparatus to boilers</text></title-part></class-title>
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<classification-item breakdown-code="true" not-allocatable="false" level="7" additional-only="true" sort-key="F23B101/00" definition-exists="false" ipc-concordant="F23B101/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F23B2101/00</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Adaptation of combustion apparatus to boilers in which the combustion chamber is situated inside the boiler vessel, e.g. surrounded by cooled surfaces</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="7" additional-only="true" sort-key="F23B103/00" definition-exists="false" ipc-concordant="F23B103/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F23B2103/00</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Adaptation of combustion apparatus for placement in or against an opening of a boiler, e.g. for replacing an oil burner</text></title-part></class-title>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F23B103/02" definition-exists="false" ipc-concordant="F23B103/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F23B2103/02</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>for producing an essentially horizontal flame</text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="7" additional-only="true" sort-key="F23B700/00" 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>F23B2700/00</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Combustion apparatus for solid fuel</text></title-part></class-title>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F23B700/003" 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>F23B2700/003</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>adapted for use in water-tube boilers</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F23B700/004" 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>F23B2700/004</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>adapted for use in Tenbrink boilers</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F23B700/005" 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>F23B2700/005</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>adapted for use in locomotives</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F23B700/006" 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>F23B2700/006</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Details of locomotive combustion apparatus</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F23B700/007" 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>F23B2700/007</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>with pressurised combustion chambers</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F23B700/008" 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>F23B2700/008</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>with interchangeable combustion chambers</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F23B700/009" 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>F23B2700/009</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>adapted for use in various steam boilers</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F23B700/01" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F23B2700/01</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>adapted for boilers built up from sections</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F23B700/011" 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>F23B2700/011</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>with fuel shaft for steam boilers</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F23B700/012" 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>F23B2700/012</classification-symbol><class-title date-revised="2018-01-01"><title-part><text>with predrying in fuel supply area</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F23B700/013" 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>F23B2700/013</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>for use in baking ovens or cooking vessels</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F23B700/014" 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>F23B2700/014</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>for use in reverberatory furnaces</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F23B700/018" 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>F23B2700/018</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>with fume afterburning by staged combustion</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F23B700/022" 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>F23B2700/022</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>with various types of fume afterburners</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F23B700/023" 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>F23B2700/023</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>with various arrangements not otherwise provided for</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F23B700/037" 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>F23B2700/037</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Burners for solid or solidified fuel, e.g. metaldehyde blocks</text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="7" additional-only="true" sort-key="F23B900/00" 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>F23B2900/00</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Special features of, or arrangements for combustion apparatus using solid fuels</text></title-part><title-part><text>Combustion processes therefor</text></title-part></class-title>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F23B900/00001" 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>F23B2900/00001</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Combustion chambers with integrated fuel hopper</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F23B900/00003" 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>F23B2900/00003</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Combustion devices specially adapted for burning metal fuels, e.g. Al or Mg</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F23B900/00004" 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>F23B2900/00004</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Means for generating pulsating combustion of solid fuel</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F23B900/00005" 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>F23B2900/00005</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Means for applying acoustical energy to flame</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F23B900/00006" 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>F23B2900/00006</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Means for applying electricity to flame, e.g. an electric field</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F23B900/99001" 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>F23B2900/99001</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Retrofitting or converting solid fuel stoves to gas or liquid fuels</text></title-part></class-title></classification-item></classification-item></classification-item></classification-item></class-scheme> |