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172 lines
93 KiB
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172 lines
93 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="E21C" definition-exists="true" date-revised="2019-08-01" status="published"><classification-symbol>E21C</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>MINING OR QUARRYING</text></title-part></class-title><notes-and-warnings date-revised="2013-01-01"><note type="note"><note-paragraph>This subclass <u>covers</u> methods or apparatus specific to mining or quarrying</note-paragraph><note-paragraph>This subclass <u>does not cover</u>, even though they may be disclosed only for mining or quarrying, drill bits, bore reamers, core taking devices, drilling pipes or rods, handling, racking or connecting arrangements for drilling pipes or rods, counterboring or enlarging drilled holes, flame drilling, or other drilling apparatus, which are covered by subclass <class-ref scheme="cpc">E21B</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="E21C25/00" date-revised="2013-01-01" status="published"><classification-symbol>E21C25/00</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Cutting, Slitting, Dislodging</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="7" additional-only="false" sort-key="E21C25/00" definition-exists="true" ipc-concordant="E21C25/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>E21C25/00</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Cutting machines, i.e. for making slits approximately parallel or perpendicular to the seam </text><reference><text>dislodging machines with slitting means <class-ref scheme="cpc">E21C27/02</class-ref>, <class-ref scheme="cpc">E21C27/10</class-ref>, <class-ref scheme="cpc">E21C27/18</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="E21C25/02" definition-exists="false" ipc-concordant="E21C25/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>E21C25/02</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Machines slitting solely by one or more percussive tools moved through the seam</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="E21C25/04" definition-exists="false" ipc-concordant="E21C25/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>E21C25/04</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Cutting crowns or other tools </text><reference><text>percussion drill bits <class-ref scheme="cpc">E21B10/36</class-ref></text></reference></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="E21C25/06" definition-exists="false" ipc-concordant="E21C25/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>E21C25/06</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Machines slitting solely by one or more cutting rods or cutting drums which rotate, move through the seam, and may or may not reciprocate</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="E21C25/08" definition-exists="false" ipc-concordant="E21C25/08" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>E21C25/08</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Mountings for the rods or drums</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="E21C25/10" definition-exists="false" ipc-concordant="E21C25/10" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>E21C25/10</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Rods</text></title-part><title-part><text>Drums</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="E21C25/14" definition-exists="false" ipc-concordant="E21C25/14" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>E21C25/14</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>with equipment for cleaning the slit </text><reference><text>associated with cutter chain machines <class-ref scheme="cpc">E21C25/50</class-ref></text></reference></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="E21C25/145" definition-exists="false" ipc-concordant="E21C25/14" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>E21C25/145</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Cowls</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="E21C25/16" definition-exists="false" ipc-concordant="E21C25/16" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>E21C25/16</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Machines slitting solely by one or more rotating saws, cutting discs, or wheels</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="E21C25/18" definition-exists="false" ipc-concordant="E21C25/18" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>E21C25/18</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Saws</text></title-part><title-part><text>Discs</text></title-part><title-part><text>Wheels</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="E21C25/20" definition-exists="false" ipc-concordant="E21C25/20" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2016-05-01" status="published"><classification-symbol>E21C25/20</classification-symbol><class-title date-revised="2016-05-01"><title-part><text>Machines slitting solely by one or more reciprocating sawing implements or reciprocating cutter chains</text></title-part><title-part><text>Shaker conveyors with cutting means</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="E21C25/22" definition-exists="false" ipc-concordant="E21C25/22" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>E21C25/22</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Machines slitting solely by one or more cutter chains moving unidirectionally along jibs</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="E21C25/24" definition-exists="false" ipc-concordant="E21C25/24" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>E21C25/24</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>with flat jibs only</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="E21C25/26" definition-exists="false" ipc-concordant="E21C25/26" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>E21C25/26</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>with curved jibs only</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="E21C25/28" definition-exists="false" ipc-concordant="E21C25/28" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>E21C25/28</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Chains or chain guides</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="E21C25/30" definition-exists="false" ipc-concordant="E21C25/30" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>E21C25/30</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Chain guides</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="E21C25/32" definition-exists="false" ipc-concordant="E21C25/32" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>E21C25/32</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>specially adapted for curved jibs</text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="E21C25/34" definition-exists="false" ipc-concordant="E21C25/34" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>E21C25/34</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Chains</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="E21C25/36" definition-exists="false" ipc-concordant="E21C25/36" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>E21C25/36</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Couplings for links</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="12" additional-only="false" sort-key="E21C25/365" definition-exists="false" ipc-concordant="E21C25/36" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2016-05-01" status="published"><classification-symbol>E21C25/365</classification-symbol><class-title date-revised="2016-05-01"><title-part><CPC-specific-text><text>allowing the bending into at least two planes </text><reference><text>chains for conveyors which are allowed to bend into at least two planes <class-ref scheme="cpc">B65G17/385</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="11" additional-only="false" sort-key="E21C25/40" definition-exists="false" ipc-concordant="E21C25/40" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>E21C25/40</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>having links with integrally formed picks</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="E21C25/50" definition-exists="false" ipc-concordant="E21C25/50" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>E21C25/50</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>with equipment for cleaning the slit </text><reference><text>associated with rotary-rod or rotary-drum machines <class-ref scheme="cpc">E21C25/14</class-ref></text></reference></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="E21C25/52" definition-exists="false" ipc-concordant="E21C25/52" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>E21C25/52</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Machines incorporating two or more of the slitting means according to groups <class-ref scheme="cpc">E21C25/02</class-ref>, <class-ref scheme="cpc">E21C25/06</class-ref>, <class-ref scheme="cpc">E21C25/16</class-ref>, <class-ref scheme="cpc">E21C25/20</class-ref> and <class-ref scheme="cpc">E21C25/22</class-ref></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="E21C25/54" definition-exists="false" ipc-concordant="E21C25/54" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>E21C25/54</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Slitting by unguided cutter cables or cutter chains, or by unguided tools drawn along the working face by cables or the like </text><reference><text>dislodging by planing means <class-ref scheme="cpc">E21C27/32</class-ref>; propulsion by haulage cables <class-ref scheme="cpc">E21C29/14</class-ref></text></reference></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="E21C25/56" definition-exists="false" ipc-concordant="E21C25/56" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2016-05-01" status="published"><classification-symbol>E21C25/56</classification-symbol><class-title date-revised="2016-05-01"><title-part><text>Slitting by cutter cables or cutter chains or by tools drawn along the working face by cables or the like, in each case guided parallel to the face, e.g. by a conveyor, by a guide parallel to a conveyor </text><reference><text>pressing the conveyor equipped with tools towards the working face <class-ref scheme="cpc">E21C35/14</class-ref></text></reference></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="E21C25/58" definition-exists="false" ipc-concordant="E21C25/58" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>E21C25/58</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Machines slitting by drilling hole on hole</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="E21C25/60" definition-exists="false" ipc-concordant="E21C25/60" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>E21C25/60</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Slitting by jets of water or other liquid </text><reference><text>picks with arrangements of fluid-spraying nozzles <class-ref scheme="cpc">E21C35/187</class-ref>; distribution of spraying fluids in rotating cutter-heads <class-ref scheme="cpc">E21C35/23</class-ref></text></reference></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="E21C25/62" definition-exists="false" ipc-concordant="E21C25/62" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>E21C25/62</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Machines for making slits approximately perpendicular to the seams either level with, or above or below the level of, the machine</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="E21C25/64" definition-exists="false" ipc-concordant="E21C25/64" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2020-01-01" status="published"><classification-symbol>E21C25/64</classification-symbol><class-title date-revised="2020-01-01"><title-part><text>Slitting machines guided solely by hand and either carried by hand or mounted on supports </text><reference><text>hand-held power-operated tools <class-ref scheme="cpc">E21C37/22</class-ref></text></reference></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="E21C25/66" definition-exists="false" ipc-concordant="E21C25/66" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>E21C25/66</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Machines for making slits with additional arrangements for drilling</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="E21C25/68" definition-exists="false" ipc-concordant="E21C25/68" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>E21C25/68</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Machines for making slits combined with equipment for removing, e.g. by loading, material won by other means </text><reference><text>slitting machines combined with planing means <class-ref scheme="cpc">E21C27/18</class-ref>; removing chippings <class-ref scheme="cpc">E21C35/20</class-ref></text></reference></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="E21C27/00" definition-exists="true" ipc-concordant="E21C27/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>E21C27/00</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Machines which completely free the mineral from the seam</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="E21C27/01" definition-exists="false" ipc-concordant="E21C27/01" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>E21C27/01</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>specially adapted for removing overhanging coal</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="E21C27/02" definition-exists="true" ipc-concordant="E21C27/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>E21C27/02</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>solely by slitting </text><reference><text>rods, drums, for same <class-ref scheme="cpc">E21C25/10</class-ref>; saws, discs, wheels <class-ref scheme="cpc">E21C25/18</class-ref>; chains, chain guides, for same <class-ref scheme="cpc">E21C25/28</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="E21C27/04" definition-exists="false" ipc-concordant="E21C27/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>E21C27/04</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>by a single chain guided on a frame with or without auxiliary slitting means</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="E21C27/06" definition-exists="false" ipc-concordant="E21C27/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>E21C27/06</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>with a slewing frame</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="E21C27/08" definition-exists="false" ipc-concordant="E21C27/08" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>E21C27/08</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>with additional means for cutting the mineral into blocks</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="E21C27/10" definition-exists="false" ipc-concordant="E21C27/10" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>E21C27/10</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>by both slitting and breaking-down</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="E21C27/12" definition-exists="false" ipc-concordant="E21C27/12" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>E21C27/12</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>breaking-down effected by acting on the vertical face of the mineral, e.g. by percussive tools</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="E21C27/122" definition-exists="false" ipc-concordant="E21C27/12" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>E21C27/122</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>with breaking-down members having a striking action</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="E21C27/124" definition-exists="false" ipc-concordant="E21C27/12" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>E21C27/124</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>with rotatable cutters provided with breaking-down members</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="E21C27/126" definition-exists="false" ipc-concordant="E21C27/12" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>E21C27/126</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>with slitting and breaking-down members situated in parallel on an intermediary level</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="E21C27/128" definition-exists="false" ipc-concordant="E21C27/12" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>E21C27/128</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>with breaking-down members functioning on the slitting level</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="E21C27/14" definition-exists="false" ipc-concordant="E21C27/14" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>E21C27/14</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>breaking-down effected by force or pressure applied to side of slit, e.g. by wedges </text><reference><text>breaking-down by means inserted in boreholes <class-ref scheme="cpc">E21C37/00</class-ref></text></reference></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="E21C27/16" definition-exists="false" ipc-concordant="E21C27/16" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>E21C27/16</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>with means for both slitting and breaking-down</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="E21C27/18" definition-exists="false" ipc-concordant="E21C27/18" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>E21C27/18</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>by both slitting and planing</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="E21C27/20" definition-exists="false" ipc-concordant="E21C27/20" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>E21C27/20</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Mineral freed by means not involving slitting</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="E21C27/22" definition-exists="false" ipc-concordant="E21C27/22" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2017-08-01" status="published"><classification-symbol>E21C27/22</classification-symbol><class-title date-revised="2017-08-01"><title-part><text>by rotary drills with breaking-down means, e.g. wedge-shaped drills </text><CPC-specific-text><text>, i.e. the rotary axis of the tool carrier being substantially perpendicular to the working face, e.g. MARIETTA-type </text><reference><text>similar machines for tunneling <class-ref scheme="cpc">E21D9/102</class-ref></text></reference></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="E21C27/24" definition-exists="true" ipc-concordant="E21C27/24" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2017-08-01" status="published"><classification-symbol>E21C27/24</classification-symbol><class-title date-revised="2017-08-01"><title-part><text>by milling means acting on the full working face </text><CPC-specific-text><text>, i.e. the rotary axis of the tool carrier being substantially parallel to the working face </text><reference><text>similar machines for tunneling <class-ref scheme="cpc">E21D9/1026</class-ref></text></reference></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="E21C27/26" definition-exists="false" ipc-concordant="E21C27/26" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>E21C27/26</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>by closely adjacent cutter chains acting on the full working face</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="E21C27/28" definition-exists="false" ipc-concordant="E21C27/28" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>E21C27/28</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>by percussive drills with breaking-down means, e.g. wedge-shaped tools</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="E21C27/30" definition-exists="false" ipc-concordant="E21C27/30" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>E21C27/30</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>by jaws, buckets or scoops that scoop-out the mineral</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="E21C27/32" definition-exists="false" ipc-concordant="E21C27/32" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>E21C27/32</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>by adjustable or non-adjustable planing means with or without loading arrangements </text><reference><text>by percussed planing means <class-ref scheme="cpc">E21C27/46</class-ref></text></reference></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="E21C27/34" definition-exists="true" ipc-concordant="E21C27/34" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>E21C27/34</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Machine propelled along the working face by cable or chain</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="E21C27/35" definition-exists="false" ipc-concordant="E21C27/35" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>E21C27/35</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Ram-ploughs</text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="E21C27/36" definition-exists="false" ipc-concordant="E21C27/36" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>E21C27/36</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Machine self-propelled along the working face</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="E21C27/38" definition-exists="false" ipc-concordant="E21C27/38" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>E21C27/38</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Machine stationary while planing in an arc</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="E21C27/40" definition-exists="false" ipc-concordant="E21C27/40" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>E21C27/40</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Machine and its planing tool making alternative step-wise movements along the working face</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="E21C27/42" definition-exists="false" ipc-concordant="E21C27/42" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>E21C27/42</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>combined with scraper or collector box</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="E21C27/44" definition-exists="false" ipc-concordant="E21C27/44" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>E21C27/44</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Planing knives </text><reference><text>mining picks <class-ref scheme="cpc">E21C35/18</class-ref></text></reference></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="E21C27/46" definition-exists="false" ipc-concordant="E21C27/46" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>E21C27/46</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>by percussed planing means</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="E21C29/00" definition-exists="true" ipc-concordant="E21C29/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>E21C29/00</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Propulsion of machines for slitting or completely freeing the mineral from the seam</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="E21C29/02" definition-exists="false" ipc-concordant="E21C29/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>E21C29/02</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>by means on the machine exerting a thrust against fixed supports</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="E21C29/04" definition-exists="false" ipc-concordant="E21C29/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>E21C29/04</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>by cable or chains</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="E21C29/06" definition-exists="false" ipc-concordant="E21C29/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>E21C29/06</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>anchored at one or both ends to the mine working face </text><CPC-specific-text><reference><text>propulsion using fixed racks along which the machine is running <class-ref scheme="cpc">E21C29/02</class-ref></text></reference></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="E21C29/08" definition-exists="false" ipc-concordant="E21C29/08" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2016-05-01" status="published"><classification-symbol>E21C29/08</classification-symbol><class-title date-revised="2016-05-01"><title-part><text>Anchoring arrangements </text><reference><text>for anchoring of conveyors only <class-ref scheme="cpc">E21F13/00</class-ref></text></reference></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="E21C29/10" definition-exists="false" ipc-concordant="E21C29/10" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>E21C29/10</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Cable or chain co-operating with a winch or the like on the machine</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="E21C29/12" definition-exists="false" ipc-concordant="E21C29/12" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>E21C29/12</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Machines propelled by thrust or pull against a part alternately anchored to and released from a cable or chain</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="E21C29/14" definition-exists="false" ipc-concordant="E21C29/14" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>E21C29/14</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>by haulage cable or chain pulling the machine along the working face</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="E21C29/145" definition-exists="false" ipc-concordant="E21C29/14" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>E21C29/145</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Means for tensioning the haulage chains or cables</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="E21C29/16" definition-exists="false" ipc-concordant="E21C29/16" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>E21C29/16</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Winches or other means for pulling cable or chain </text><reference><text>winches in general <class-ref scheme="cpc">B66D</class-ref></text></reference></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="E21C29/18" definition-exists="false" ipc-concordant="E21C29/18" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>E21C29/18</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Coupling and uncoupling machine to cable or chain</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="E21C29/185" definition-exists="false" ipc-concordant="E21C29/18" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>E21C29/185</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>with coupling or uncoupling of the machine at will</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="9" additional-only="false" sort-key="E21C29/20" definition-exists="false" ipc-concordant="E21C29/20" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>E21C29/20</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>with safety devices operating in the event of breakage of the cable or chain</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="E21C29/22" definition-exists="false" ipc-concordant="E21C29/22" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>E21C29/22</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>by wheels, endless tracks or the like </text><CPC-specific-text><reference><text>propulsion using fixed racks along which the machine is running <class-ref scheme="cpc">E21C29/02</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="E21C29/24" definition-exists="false" ipc-concordant="E21C29/24" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>E21C29/24</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Trucks carrying the machine while working</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="E21C29/26" definition-exists="false" ipc-concordant="E21C29/26" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>E21C29/26</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>with means for adjustably positioning the machine on the truck</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="E21C29/28" definition-exists="false" ipc-concordant="E21C29/28" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>E21C29/28</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>adjusting the height of the whole machine</text></title-part></class-title></classification-item></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="E21C31/00" definition-exists="true" ipc-concordant="E21C31/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>E21C31/00</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Driving means incorporated in machines for slitting or completely freeing the mineral from the seam</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="E21C31/02" definition-exists="false" ipc-concordant="E21C31/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>E21C31/02</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>for cutting or breaking-down devices</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="E21C31/025" definition-exists="false" ipc-concordant="E21C31/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>E21C31/025</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>by another slitting or extracting member</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="E21C31/04" definition-exists="false" ipc-concordant="E21C31/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>E21C31/04</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>imparting both a rotary and reciprocating motion</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="E21C31/06" definition-exists="false" ipc-concordant="E21C31/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>E21C31/06</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>actuated by an endless cable or chain</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="E21C31/08" definition-exists="false" ipc-concordant="E21C31/08" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>E21C31/08</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>for adjusting parts of the machines</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="E21C31/10" definition-exists="false" ipc-concordant="E21C31/10" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>E21C31/10</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>for slewing parts of the machines</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="E21C31/12" definition-exists="false" ipc-concordant="E21C31/12" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>E21C31/12</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Component parts</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="E21C33/00" definition-exists="true" ipc-concordant="E21C33/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>E21C33/00</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Trucks or other devices for transporting machines for slitting or completely freeing the mineral from the seam</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="E21C33/02" definition-exists="false" ipc-concordant="E21C33/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>E21C33/02</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>with equipment for loading or unloading the machine on to or from the truck</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="E21C33/025" definition-exists="false" ipc-concordant="E21C33/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>E21C33/025</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>the unloaded machine remaining connected to the transport vehicle</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="E21C35/00" definition-exists="true" ipc-concordant="E21C35/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2022-08-01" status="published"><classification-symbol>E21C35/00</classification-symbol><class-title date-revised="2022-08-01"><title-part><text>Details of, or accessories for, machines for slitting or completely freeing the mineral from the seam not provided for in groups <class-ref scheme="cpc">E21C25/00</class-ref> - <class-ref scheme="cpc">E21C33/00</class-ref>, <class-ref scheme="cpc">E21C37/00</class-ref> or <class-ref scheme="cpc">E21C39/00</class-ref></text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="E21C35/02" definition-exists="false" ipc-concordant="E21C35/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>E21C35/02</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Locking equipment for slewable parts</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="E21C35/04" definition-exists="false" ipc-concordant="E21C35/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>E21C35/04</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Safety devices </text><reference><text>operating in the event of breakage of a haulage cable or chain <class-ref scheme="cpc">E21C29/20</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="E21C35/043" definition-exists="false" ipc-concordant="E21C35/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>E21C35/043</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Protection against overload during transfer of machines for slitting or completely freeing the mineral from the seam</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="E21C35/046" definition-exists="false" ipc-concordant="E21C35/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>E21C35/046</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Protection of cables or pipes for supplying power</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="E21C35/06" definition-exists="false" ipc-concordant="E21C35/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>E21C35/06</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Equipment for positioning the whole machine in relation to its substructure</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="E21C35/08" definition-exists="false" ipc-concordant="E21C35/08" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>E21C35/08</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Guiding the machine</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="E21C35/10" definition-exists="false" ipc-concordant="E21C35/10" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>E21C35/10</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>by feelers contacting the working face</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="E21C35/12" definition-exists="false" ipc-concordant="E21C35/12" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2016-05-01" status="published"><classification-symbol>E21C35/12</classification-symbol><class-title date-revised="2016-05-01"><title-part><text>along a conveyor for the cut mineral</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="E21C35/125" definition-exists="false" ipc-concordant="E21C35/12" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2016-05-01" status="published"><classification-symbol>E21C35/125</classification-symbol><class-title date-revised="2016-05-01"><title-part><CPC-specific-text><text>Means for inclining the conveyor</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="E21C35/14" definition-exists="false" ipc-concordant="E21C35/14" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2016-05-01" status="published"><classification-symbol>E21C35/14</classification-symbol><class-title date-revised="2016-05-01"><title-part><text>Equipment for pressing the conveyor towards the working face</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="E21C35/16" definition-exists="false" ipc-concordant="E21C35/16" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>E21C35/16</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>by making use of the timbering, filling, or other supports</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="E21C35/18" definition-exists="false" ipc-concordant="E21C35/18" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2017-08-01" status="published"><classification-symbol>E21C35/18</classification-symbol><class-title date-revised="2017-08-01"><title-part><text>Mining picks</text></title-part><title-part><text>Holders therefor </text><reference><text>planing knives <class-ref scheme="cpc">E21C27/44</class-ref> </text><CPC-specific-text><text>; pick-like bits for milling stone like materials <class-ref scheme="cpc">B28D1/186</class-ref></text></CPC-specific-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="E21C35/183" definition-exists="false" ipc-concordant="E21C35/183" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>E21C35/183</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>with inserts or layers of wear-resistant material </text><CPC-specific-text><reference><text>drill bits with wear-resistant parts <class-ref scheme="cpc">E21B10/46</class-ref></text></reference></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="E21C35/1831" definition-exists="false" ipc-concordant="E21C35/183" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2020-05-01" status="published"><classification-symbol>E21C35/1831</classification-symbol><class-title date-revised="2020-05-01"><title-part><CPC-specific-text><text>Fixing methods or devices</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="E21C35/1833" definition-exists="false" ipc-concordant="E21C35/183" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2020-05-01" status="published"><classification-symbol>E21C35/1833</classification-symbol><class-title date-revised="2020-05-01"><title-part><CPC-specific-text><text>Multiple inserts</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="E21C35/1835" definition-exists="false" ipc-concordant="E21C35/183" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2020-05-01" status="published"><classification-symbol>E21C35/1835</classification-symbol><class-title date-revised="2020-05-01"><title-part><CPC-specific-text><text>Chemical composition or specific material</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="E21C35/1837" definition-exists="false" ipc-concordant="E21C35/183" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2020-05-01" status="published"><classification-symbol>E21C35/1837</classification-symbol><class-title date-revised="2020-05-01"><title-part><CPC-specific-text><text>characterised by the shape</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="E21C35/184" definition-exists="false" ipc-concordant="E21C35/18" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2020-05-01" status="published"><classification-symbol>E21C35/184</classification-symbol><class-title date-revised="2020-05-01"><title-part><CPC-specific-text><text>Reversible picks, i.e. having two working ends, one operating, the other in reserve</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="E21C35/186" definition-exists="false" ipc-concordant="E21C35/18" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2020-05-01" status="published"><classification-symbol>E21C35/186</classification-symbol><class-title date-revised="2020-05-01"><title-part><CPC-specific-text><text>using a locking piston actuated hydraulically, e.g. by spraying-fluid pressure</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="E21C35/187" definition-exists="true" ipc-concordant="E21C35/187" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>E21C35/187</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>with arrangement of fluid-spraying nozzles </text><reference><text>supply of fluid to the nozzles <class-ref scheme="cpc">E21C35/22</class-ref></text></reference></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="E21C35/188" definition-exists="false" ipc-concordant="E21C35/18" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2020-05-01" status="published"><classification-symbol>E21C35/188</classification-symbol><class-title date-revised="2020-05-01"><title-part><CPC-specific-text><text>characterised by adaptations to use an extraction tool</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="E21C35/19" definition-exists="false" ipc-concordant="E21C35/19" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>E21C35/19</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Means for fixing picks or holders</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="E21C35/191" definition-exists="false" ipc-concordant="E21C35/19" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2020-05-01" status="published"><classification-symbol>E21C35/191</classification-symbol><class-title date-revised="2020-05-01"><title-part><CPC-specific-text><text>for fixing holders</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="E21C35/193" definition-exists="false" ipc-concordant="E21C35/193" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>E21C35/193</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>using bolts as main fixing elements</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="E21C35/1933" definition-exists="false" ipc-concordant="E21C35/193" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>E21C35/1933</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>the picks having a cylindrical shank</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="E21C35/1936" definition-exists="false" ipc-concordant="E21C35/193" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>E21C35/1936</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>the picks having a square- or rectangular-section shank</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="10" additional-only="false" sort-key="E21C35/197" definition-exists="false" ipc-concordant="E21C35/197" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>E21C35/197</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>using sleeves, rings or the like, as main fixing elements</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="E21C35/20" definition-exists="false" ipc-concordant="E21C35/20" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2017-05-01" status="published"><classification-symbol>E21C35/20</classification-symbol><class-title date-revised="2017-05-01"><title-part><text>General features of equipment for removal of chippings, e.g. for loading on conveyor</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="E21C35/22" definition-exists="false" ipc-concordant="E21C35/22" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2020-05-01" status="published"><classification-symbol>E21C35/22</classification-symbol><class-title date-revised="2020-05-01"><title-part><text>Equipment for preventing the formation of, or for removal of, dust </text><reference><text>picks with arrangement of fluid-spraying nozzles <class-ref scheme="cpc">E21C35/187</class-ref>; </text><CPC-specific-text><text>removing dust while drilling <class-ref scheme="cpc">E21B21/011</class-ref></text></CPC-specific-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="E21C35/223" definition-exists="false" ipc-concordant="E21C35/22" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>E21C35/223</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Equipment associated with mining machines for sucking dust-laden air from the cutting area, with or without cleaning of the air</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="E21C35/226" definition-exists="false" ipc-concordant="E21C35/22" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2020-05-01" status="published"><classification-symbol>E21C35/226</classification-symbol><class-title date-revised="2020-05-01"><title-part><CPC-specific-text><text>Control valves for the spraying liquid used in dust suppression systems</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="E21C35/23" definition-exists="false" ipc-concordant="E21C35/23" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>E21C35/23</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Distribution of spraying-fluids in rotating cutter-heads</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="E21C35/24" definition-exists="false" ipc-concordant="E21C35/24" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>E21C35/24</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Remote control specially adapted for machines for slitting or completely freeing the mineral </text><reference><text>control in general <class-ref scheme="cpc">G05</class-ref></text></reference></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="E21C37/00" definition-exists="true" ipc-concordant="E21C37/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>E21C37/00</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Other methods or devices for dislodging with or without loading </text><reference><text>breaking-down by means inserted in slits <class-ref scheme="cpc">E21C27/14</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="E21C37/005" definition-exists="false" ipc-concordant="E21C37/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>E21C37/005</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>by projectiles</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="E21C37/02" definition-exists="false" ipc-concordant="E21C37/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>E21C37/02</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>by wedges</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="E21C37/04" definition-exists="false" ipc-concordant="E21C37/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>E21C37/04</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>by devices with parts pressed mechanically against the wall of a borehole </text><CPC-specific-text><text>or a slit</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="E21C37/06" definition-exists="false" ipc-concordant="E21C37/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>E21C37/06</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>by making use of hydraulic or pneumatic pressure in a borehole</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="E21C37/08" definition-exists="false" ipc-concordant="E21C37/08" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>E21C37/08</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Devices with pistons, plungers, or the like, pressed locally against the wall of the borehole </text><CPC-specific-text><reference><text><class-ref scheme="cpc">E21C37/10</class-ref> takes precedence</text></reference></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="E21C37/10" definition-exists="false" ipc-concordant="E21C37/10" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>E21C37/10</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Devices with expanding elastic casings</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="E21C37/12" definition-exists="false" ipc-concordant="E21C37/12" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>E21C37/12</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>by injecting into the borehole a liquid, either initially at high pressure or subsequently subjected to high pressure, e.g. by pulses, by explosive cartridges acting on the liquid </text><reference><text>slitting by jets of water <class-ref scheme="cpc">E21C25/60</class-ref>; blasting by explosives <class-ref scheme="cpc">F42D</class-ref></text></reference></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="E21C37/14" definition-exists="false" ipc-concordant="E21C37/14" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>E21C37/14</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>by compressed air</text></title-part><title-part><text>by gas blast</text></title-part><title-part><text>by gasifying liquids</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="E21C37/16" definition-exists="false" ipc-concordant="E21C37/16" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>E21C37/16</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>by fire-setting or by similar methods based on a heat effect </text><reference><text>drilling by use of heat <class-ref scheme="cpc">E21B7/14</class-ref></text></reference></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="E21C37/18" definition-exists="false" ipc-concordant="E21C37/18" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>E21C37/18</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>by electricity</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="E21C37/20" definition-exists="false" ipc-concordant="E21C37/20" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>E21C37/20</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>by ultrasonics</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="E21C37/22" definition-exists="false" ipc-concordant="E21C37/22" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>E21C37/22</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Hand tools or hand-held power-operated tools specially adapted for dislodging minerals </text><reference><text>slitting machines guided solely by hand <class-ref scheme="cpc">E21C25/64</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="E21C37/24" definition-exists="false" ipc-concordant="E21C37/24" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>E21C37/24</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Pick hammers </text><reference><text>pneumatic hammers in general <class-ref scheme="cpc">B25D</class-ref>; percussion drilling <class-ref scheme="cpc">E21B1/00</class-ref></text></reference></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="E21C37/26" definition-exists="false" ipc-concordant="E21C37/26" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>E21C37/26</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Chisels or other cutting tools not mentioned before</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="E21C39/00" definition-exists="true" ipc-concordant="E21C39/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>E21C39/00</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Devices for testing <u>in situ</u> the hardness or other properties of minerals, e.g. for giving information as to the selection of suitable mining tools</text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="true" level="6" additional-only="false" sort-key="E21C41/00" date-revised="2013-01-01" status="published"><classification-symbol>E21C41/00</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Methods of mining or quarrying</text></title-part><title-part><text>Open-pit mining</text></title-part><title-part><text>Layouts therefor </text><reference><text>methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells <class-ref scheme="cpc">E21B43/00</class-ref></text></reference></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="7" additional-only="false" sort-key="E21C41/00" definition-exists="true" ipc-concordant="E21C41/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2021-08-01" status="published"><classification-symbol>E21C41/00</classification-symbol><class-title date-revised="2017-08-01"><title-part><text>Methods of underground or surface mining </text><reference><text><class-ref scheme="cpc">E21C45/00</class-ref> takes precedence</text></reference></title-part><title-part><text>Layouts therefor </text><reference><text>for peat <class-ref scheme="cpc">E21C49/00</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="E21C41/16" definition-exists="false" ipc-concordant="E21C41/16" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2021-08-01" status="published"><classification-symbol>E21C41/16</classification-symbol><class-title date-revised="2016-05-01"><title-part><text>Methods of underground mining </text><reference><text>winning machines therefor <class-ref scheme="cpc">E21C25/00</class-ref> - <class-ref scheme="cpc">E21C39/00</class-ref></text></reference></title-part><title-part><text>Layouts therefor</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="E21C41/18" definition-exists="false" ipc-concordant="E21C41/18" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>E21C41/18</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>for brown or hard coal</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="E21C41/20" definition-exists="false" ipc-concordant="E21C41/20" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>E21C41/20</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>for rock salt or potash salt</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="E21C41/22" definition-exists="false" ipc-concordant="E21C41/22" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>E21C41/22</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>for ores, e.g. mining placers</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="E21C41/24" definition-exists="false" ipc-concordant="E21C41/24" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>E21C41/24</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>for oil-bearing deposits</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="E21C41/26" definition-exists="false" ipc-concordant="E21C41/26" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2021-08-01" status="published"><classification-symbol>E21C41/26</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Methods of surface mining </text><reference><text>machines for obtaining, or the removal of, materials in open-pit mines <class-ref scheme="cpc">E21C47/00</class-ref></text></reference></title-part><title-part><text>Layouts therefor</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="E21C41/28" definition-exists="false" ipc-concordant="E21C41/28" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>E21C41/28</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>for brown or hard coal</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="E21C41/30" definition-exists="false" ipc-concordant="E21C41/30" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>E21C41/30</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>for ores, e.g. mining placers</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="E21C41/31" definition-exists="false" ipc-concordant="E21C41/26" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>E21C41/31</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>for oil-bearing deposits</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="E21C41/32" definition-exists="false" ipc-concordant="E21C41/32" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2021-08-01" status="published"><classification-symbol>E21C41/32</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Reclamation of surface-mined areas </text><reference><text>machines or methods for treating or working soil for agricultural purposes <class-ref scheme="cpc">A01B77/00</class-ref>, <class-ref scheme="cpc">A01B79/00</class-ref>; machines for back-filling <class-ref scheme="cpc">E02F5/22</class-ref></text></reference></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="E21C45/00" definition-exists="true" ipc-concordant="E21C45/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>E21C45/00</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Methods of hydraulic mining</text></title-part><title-part><text>Hydraulic monitors </text><reference><text><class-ref scheme="cpc">E21C25/60</class-ref> takes precedence</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="E21C45/02" definition-exists="false" ipc-concordant="E21C45/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>E21C45/02</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Means for generating pulsating fluid jets</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="E21C45/04" definition-exists="false" ipc-concordant="E21C45/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>E21C45/04</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>by use of highly pressurised liquid</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="E21C45/06" definition-exists="false" ipc-concordant="E21C45/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>E21C45/06</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>by use of compressed gases</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="E21C45/08" definition-exists="false" ipc-concordant="E21C45/08" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>E21C45/08</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Automatic or remote control of hydraulic monitors</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="E21C47/00" definition-exists="true" ipc-concordant="E21C47/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>E21C47/00</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Machines for obtaining or the removal of materials in open-pit mines </text><reference><text>obtaining peat <class-ref scheme="cpc">E21C49/00</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="E21C47/02" definition-exists="false" ipc-concordant="E21C47/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>E21C47/02</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>for coal, brown coal, or the like </text><reference><text>dredgers or soil-shifting machines in general <class-ref scheme="cpc">E02F</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="E21C47/04" definition-exists="false" ipc-concordant="E21C47/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2016-05-01" status="published"><classification-symbol>E21C47/04</classification-symbol><class-title date-revised="2016-05-01"><title-part><text>Conveyor bridges used in co-operation with the winning apparatus</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="E21C47/06" definition-exists="false" ipc-concordant="E21C47/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2016-05-01" status="published"><classification-symbol>E21C47/06</classification-symbol><class-title date-revised="2016-05-01"><title-part><text>Cableway conveyors used in co-operation with the winning apparatus </text><reference><text>underground hauling <class-ref scheme="cpc">E21F13/00</class-ref></text></reference></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="E21C47/08" definition-exists="false" ipc-concordant="E21C47/08" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>E21C47/08</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Devices for cutting-out partings, e.g. layers of sand between seams of coal</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="E21C47/10" definition-exists="false" ipc-concordant="E21C47/10" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>E21C47/10</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>for quarrying stone, sand, gravel, or clay</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="E21C49/00" definition-exists="true" ipc-concordant="E21C49/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>E21C49/00</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Obtaining peat</text></title-part><title-part><text>Machines therefor </text><reference><text>treating peat <class-ref scheme="cpc">C10F</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="E21C49/02" definition-exists="false" ipc-concordant="E21C49/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>E21C49/02</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>by excavating</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="E21C49/04" definition-exists="false" ipc-concordant="E21C49/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>E21C49/04</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>by digging in the form of peat sods</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="E21C50/00" definition-exists="true" ipc-concordant="E21C50/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>E21C50/00</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Obtaining minerals from underwater, not otherwise provided for </text><reference><text>suction dredgers or component parts thereof <class-ref scheme="cpc">E02F3/88</class-ref>; equipment for conveying or separating excavated material <class-ref scheme="cpc">E02F7/00</class-ref>; dippers <class-ref scheme="cpc">G01N1/12</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="E21C50/02" definition-exists="false" ipc-concordant="E21C50/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>E21C50/02</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>dependent on the ship movements </text><reference><text>vessels or floating structures adapted for special purposes <class-ref scheme="cpc">B63B35/00</class-ref></text></reference></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="E21C51/00" definition-exists="true" ipc-concordant="E21C51/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>E21C51/00</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Apparatus for, or methods of, winning materials from extraterrestrial sources </text><reference><text>cosmonautics <class-ref scheme="cpc">B64G</class-ref></text></reference></title-part></class-title></classification-item></classification-item></classification-item></class-scheme> |