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52 lines
24 KiB
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52 lines
24 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="D21D" definition-exists="true" date-revised="2018-08-01" status="published"><classification-symbol>D21D</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>TREATMENT OF THE MATERIALS BEFORE PASSING TO THE PAPER-MAKING MACHINE</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>
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<classification-item breakdown-code="false" not-allocatable="true" level="6" additional-only="false" sort-key="D21D1/00" date-revised="2013-01-01" status="published"><classification-symbol>D21D1/00</classification-symbol>
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<classification-item breakdown-code="false" not-allocatable="false" level="7" additional-only="false" sort-key="D21D1/00" definition-exists="true" ipc-concordant="D21D1/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>D21D1/00</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Methods of beating or refining</text></title-part><title-part><text>Beaters of the Hollander type </text><reference><text>knotter screens <class-ref scheme="cpc">D21F</class-ref></text></reference></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="D21D1/002" definition-exists="false" ipc-concordant="D21D1/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>D21D1/002</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Control devices</text></CPC-specific-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="D21D1/004" definition-exists="true" ipc-concordant="D21D1/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>D21D1/004</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Methods of beating or refining including disperging or deflaking</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="D21D1/006" definition-exists="true" ipc-concordant="D21D1/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>D21D1/006</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Disc mills</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="D21D1/008" definition-exists="true" ipc-concordant="D21D1/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>D21D1/008</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Discs</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="8" additional-only="false" sort-key="D21D1/02" definition-exists="true" ipc-concordant="D21D1/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>D21D1/02</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Methods of beating</text></title-part><title-part><text>Beaters of the Hollander type</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="D21D1/04" definition-exists="false" ipc-concordant="D21D1/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>D21D1/04</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Beater rolls or bars</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="D21D1/06" definition-exists="false" ipc-concordant="D21D1/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>D21D1/06</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Bed plates</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="D21D1/08" definition-exists="false" ipc-concordant="D21D1/08" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>D21D1/08</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Beaters with means for driving the pulp quickly</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="D21D1/10" definition-exists="false" ipc-concordant="D21D1/10" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>D21D1/10</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Beaters with means for regulating the pressure between the beater roll and the bed plate</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="D21D1/12" definition-exists="false" ipc-concordant="D21D1/12" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>D21D1/12</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Beaters with means for continuous pulp discharge</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="D21D1/14" definition-exists="false" ipc-concordant="D21D1/14" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>D21D1/14</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Beaters with one beater roll and with vertical stuff circulation canal</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="D21D1/16" definition-exists="false" ipc-concordant="D21D1/16" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>D21D1/16</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Beaters with means for returning the pulp over the head of the beater roll</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="D21D1/18" definition-exists="false" ipc-concordant="D21D1/18" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>D21D1/18</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Beaters with two or more beater rolls</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="D21D1/20" definition-exists="false" ipc-concordant="D21D1/20" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>D21D1/20</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Methods of refining</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="D21D1/22" definition-exists="false" ipc-concordant="D21D1/22" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>D21D1/22</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Jordans</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="D21D1/24" definition-exists="false" ipc-concordant="D21D1/24" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>D21D1/24</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Jordan rolls</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="D21D1/26" definition-exists="false" ipc-concordant="D21D1/26" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>D21D1/26</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Jordan bed plates</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="D21D1/28" definition-exists="false" ipc-concordant="D21D1/28" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>D21D1/28</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Ball or rod mills</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="D21D1/30" definition-exists="false" ipc-concordant="D21D1/30" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>D21D1/30</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Disc mills</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="D21D1/303" definition-exists="false" ipc-concordant="D21D1/30" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>D21D1/303</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Double disc mills</text></CPC-specific-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="D21D1/306" definition-exists="false" ipc-concordant="D21D1/30" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>D21D1/306</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Discs</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="D21D1/32" definition-exists="false" ipc-concordant="D21D1/32" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>D21D1/32</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Hammer mills</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="D21D1/34" definition-exists="true" ipc-concordant="D21D1/34" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>D21D1/34</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Other mills or refiners</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="D21D1/36" definition-exists="false" ipc-concordant="D21D1/36" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>D21D1/36</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>with vertical shaft</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="D21D1/38" definition-exists="false" ipc-concordant="D21D1/38" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>D21D1/38</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>with horizontal shaft</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="D21D1/40" definition-exists="true" ipc-concordant="D21D1/40" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>D21D1/40</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Washing the fibres</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="D21D5/00" definition-exists="true" ipc-concordant="D21D5/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>D21D5/00</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Purification of the pulp suspension by mechanical means</text></title-part><title-part><text>Apparatus therefor </text><reference><text>centrifuges, cyclones <class-ref scheme="cpc">B04</class-ref></text></reference></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="D21D5/005" definition-exists="true" ipc-concordant="D21D5/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>D21D5/005</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Forming fibrous aggregates</text></CPC-specific-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="D21D5/02" definition-exists="false" ipc-concordant="D21D5/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>D21D5/02</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Straining or screening the pulp</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="D21D5/023" definition-exists="false" ipc-concordant="D21D5/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>D21D5/023</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Stationary screen-drums</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="D21D5/026" definition-exists="false" ipc-concordant="D21D5/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>D21D5/026</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>with rotating cleaning foils</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="D21D5/04" definition-exists="false" ipc-concordant="D21D5/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>D21D5/04</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Flat screens</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="D21D5/043" definition-exists="false" ipc-concordant="D21D5/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>D21D5/043</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Vibrating screens</text></CPC-specific-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="D21D5/046" definition-exists="false" ipc-concordant="D21D5/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>D21D5/046</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Rotary screens</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="D21D5/06" definition-exists="false" ipc-concordant="D21D5/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>D21D5/06</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Rotary screen-drums</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="D21D5/08" definition-exists="false" ipc-concordant="D21D5/08" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>D21D5/08</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>combined with a rocking movement</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="D21D5/10" definition-exists="false" ipc-concordant="D21D5/10" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>D21D5/10</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>of the tank</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="D21D5/12" definition-exists="false" ipc-concordant="D21D5/12" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>D21D5/12</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>of the screen</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="D21D5/14" definition-exists="false" ipc-concordant="D21D5/14" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>D21D5/14</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>of the tank and the screen</text></title-part></class-title></classification-item></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="D21D5/16" definition-exists="false" ipc-concordant="D21D5/16" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>D21D5/16</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Cylinders and plates for screens</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="D21D5/18" definition-exists="true" ipc-concordant="D21D5/18" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>D21D5/18</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>with the aid of centrifugal force</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="D21D5/20" definition-exists="false" ipc-concordant="D21D5/20" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>D21D5/20</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>in apparatus with a horizontal axis</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="D21D5/22" definition-exists="false" ipc-concordant="D21D5/22" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>D21D5/22</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>in apparatus with a vertical axis</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="D21D5/24" definition-exists="true" ipc-concordant="D21D5/24" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>D21D5/24</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>in cyclones</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="D21D5/26" definition-exists="true" ipc-concordant="D21D5/26" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>D21D5/26</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>De-aeration of paper stock</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="D21D5/28" definition-exists="false" ipc-concordant="D21D5/28" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>D21D5/28</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Tanks for storing or agitating pulp</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="D21D99/00" definition-exists="true" ipc-concordant="D21D99/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>D21D99/00</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></class-scheme> |