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blabla/PATSTAT/CPCSchemeXML202302/cpc-scheme-F28F.xml

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<?xml version="1.0" encoding="UTF-8"?>
<class-scheme publication-date="2023-02-01" scheme-type="cpc" publication-type="official">
<classification-item breakdown-code="false" not-allocatable="true" level="5" additional-only="false" sort-key="F28F" definition-exists="true" date-revised="2018-08-01" status="published"><classification-symbol>F28F</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION </text><reference><text>water and air traps, air venting <class-ref scheme="cpc">F16</class-ref></text></reference></title-part></class-title><notes-and-warnings><note type="warning"><note-paragraph>In this subclass non-limiting references (in the sense of paragraph 39 of the Guide to the IPC) may still be displayed in the scheme.</note-paragraph></note></notes-and-warnings>
<classification-item breakdown-code="false" not-allocatable="true" level="6" additional-only="false" sort-key="F28F1/00" date-revised="2013-01-01" status="published"><classification-symbol>F28F1/00</classification-symbol>
<classification-item breakdown-code="false" not-allocatable="false" level="7" additional-only="false" sort-key="F28F1/00" definition-exists="true" ipc-concordant="F28F1/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F1/00</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Tubular elements</text></title-part><title-part><text>Assemblies of tubular elements </text><reference><text>specially adapted for movement <class-ref scheme="cpc">F28F5/00</class-ref></text></reference></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F28F1/003" definition-exists="false" ipc-concordant="F28F1/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F1/003</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Multiple wall conduits, e.g. for leak detection </text><reference><text>leak-detection in metal cooled nuclear reactor steam generators <class-ref scheme="cpc">F22B1/066</class-ref></text></reference></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F28F1/006" definition-exists="false" ipc-concordant="F28F1/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F1/006</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>with variable shape, e.g. with modified tube ends, with different geometrical features </text><reference><text><class-ref scheme="cpc">F28F1/025</class-ref>, <class-ref scheme="cpc">F28F1/06</class-ref>, <class-ref scheme="cpc">F28F1/08</class-ref>, <class-ref scheme="cpc">F28F9/16</class-ref>, <class-ref scheme="cpc">F28F9/18</class-ref> take precedence</text></reference></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F28F1/02" definition-exists="false" ipc-concordant="F28F1/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F1/02</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Tubular elements of cross-section which is non-circular </text><reference><text><class-ref scheme="cpc">F28F1/08</class-ref>, <class-ref scheme="cpc">F28F1/10</class-ref> take precedence</text></reference></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F28F1/022" definition-exists="false" ipc-concordant="F28F1/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F1/022</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>with multiple channels</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F28F1/025" definition-exists="false" ipc-concordant="F28F1/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2016-08-01" status="published"><classification-symbol>F28F1/025</classification-symbol><class-title date-revised="2016-08-01"><title-part><CPC-specific-text><text>with variable shape, e.g. with modified tube ends, with different geometrical features </text><reference><text><class-ref scheme="cpc">F28F1/06</class-ref>, <class-ref scheme="cpc">F28F1/08</class-ref>, <class-ref scheme="cpc">F28F9/16</class-ref>, <class-ref scheme="cpc">F28F9/18</class-ref> take precedence</text></reference></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="F28F1/027" definition-exists="false" ipc-concordant="F28F1/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F2001/027</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>with dimples</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F28F1/04" definition-exists="false" ipc-concordant="F28F1/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F1/04</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>polygonal, e.g. rectangular </text><CPC-specific-text><reference><text><class-ref scheme="cpc">F28F1/022</class-ref> takes precedence</text></reference></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="F28F1/045" definition-exists="false" ipc-concordant="F28F1/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F1/045</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>with assemblies of stacked elements</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F28F1/06" definition-exists="false" ipc-concordant="F28F1/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F1/06</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>crimped or corrugated in cross-section</text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F28F1/08" definition-exists="false" ipc-concordant="F28F1/08" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F1/08</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Tubular elements crimped or corrugated in longitudinal section</text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F28F1/10" definition-exists="false" ipc-concordant="F28F1/10" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2017-05-01" status="published"><classification-symbol>F28F1/10</classification-symbol><class-title date-revised="2017-05-01"><title-part><text>Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses </text><reference><text>crimped or corrugated elements <class-ref scheme="cpc">F28F1/06</class-ref>, <class-ref scheme="cpc">F28F1/08</class-ref></text></reference></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F28F1/105" definition-exists="false" ipc-concordant="F28F1/10" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F1/105</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>the means being corrugated elements extending around the tubular elements</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F28F1/12" definition-exists="false" ipc-concordant="F28F1/12" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F1/12</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>the means being only outside the tubular element</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="F28F1/122" definition-exists="false" ipc-concordant="F28F1/12" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F1/122</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>and being formed of wires</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="F28F1/124" definition-exists="false" ipc-concordant="F28F1/12" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F1/124</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>and being formed of pins</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="F28F1/126" definition-exists="false" ipc-concordant="F28F1/12" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F1/126</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>consisting of zig-zag shaped fins </text><reference><text><class-ref scheme="cpc">F28F1/105</class-ref> takes precedence</text></reference></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="F28F1/128" definition-exists="false" ipc-concordant="F28F1/12" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F1/128</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Fins with openings, e.g. louvered fins</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="F28F1/14" definition-exists="false" ipc-concordant="F28F1/14" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F1/14</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>and extending longitudinally </text><reference><text><class-ref scheme="cpc">F28F1/38</class-ref> takes precedence</text></reference></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="F28F1/16" definition-exists="false" ipc-concordant="F28F1/16" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F1/16</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>the means being integral with the element, e.g. formed by extrusion </text><reference><text><class-ref scheme="cpc">F28F1/22</class-ref> takes precedence</text></reference></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="12" additional-only="false" sort-key="F28F1/18" definition-exists="false" ipc-concordant="F28F1/18" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F1/18</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>the element being built-up from finned sections</text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="F28F1/20" definition-exists="false" ipc-concordant="F28F1/20" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F1/20</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>the means being attachable to the element </text><reference><text><class-ref scheme="cpc">F28F1/22</class-ref> takes precedence</text></reference></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="F28F1/22" definition-exists="false" ipc-concordant="F28F1/22" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F1/22</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>the means having portions engaging further tubular elements</text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="F28F1/24" definition-exists="false" ipc-concordant="F28F1/24" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F1/24</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>and extending transversely </text><reference><text><class-ref scheme="cpc">F28F1/38</class-ref> takes precedence</text></reference></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="F28F1/26" definition-exists="false" ipc-concordant="F28F1/26" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F1/26</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>the means being integral with the element </text><reference><text><class-ref scheme="cpc">F28F1/32</class-ref> takes precedence</text></reference></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="12" additional-only="false" sort-key="F28F1/28" definition-exists="false" ipc-concordant="F28F1/28" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F1/28</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>the element being built-up from finned sections</text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="F28F1/30" definition-exists="false" ipc-concordant="F28F1/30" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F1/30</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>the means being attachable to the element </text><reference><text><class-ref scheme="cpc">F28F1/32</class-ref> takes precedence</text></reference></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="F28F1/32" definition-exists="false" ipc-concordant="F28F1/32" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F1/32</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>the means having portions engaging further tubular elements</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="12" additional-only="false" sort-key="F28F1/325" definition-exists="false" ipc-concordant="F28F1/32" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F1/325</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Fins with openings</text></CPC-specific-text></title-part></class-title></classification-item></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="F28F1/34" definition-exists="false" ipc-concordant="F28F1/34" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F1/34</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>and extending obliquely </text><reference><text><class-ref scheme="cpc">F28F1/38</class-ref> takes precedence</text></reference></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="F28F1/36" definition-exists="false" ipc-concordant="F28F1/36" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F1/36</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>the means being helically wound fins or wire spirals</text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="F28F1/38" definition-exists="false" ipc-concordant="F28F1/38" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F1/38</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>and being staggered to form tortuous fluid passages</text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F28F1/40" definition-exists="false" ipc-concordant="F28F1/40" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F1/40</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>the means being only inside the tubular element</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="F28F1/405" definition-exists="false" ipc-concordant="F28F1/40" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F1/405</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>and being formed of wires</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F28F1/42" definition-exists="false" ipc-concordant="F28F1/42" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F1/42</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>the means being both outside and inside the tubular element</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="F28F1/422" definition-exists="false" ipc-concordant="F28F1/42" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F1/422</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>with outside means integral with the tubular element and inside means integral with the tubular element </text><reference><text><class-ref scheme="cpc">F28F1/424</class-ref> takes precedence</text></reference></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="F28F1/424" definition-exists="false" ipc-concordant="F28F1/42" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F1/424</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Means comprising outside portions integral with inside portions</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="F28F1/426" definition-exists="false" ipc-concordant="F28F1/42" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F1/426</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>the outside portions and the inside portions forming parts of complementary shape, e.g. concave and convex</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="F28F1/428" definition-exists="false" ipc-concordant="F28F1/42" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F2001/428</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Particular methods for manufacturing outside or inside fins</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="F28F1/44" definition-exists="false" ipc-concordant="F28F1/44" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F1/44</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>and being formed of wire mesh</text></title-part></class-title></classification-item></classification-item></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="7" additional-only="false" sort-key="F28F3/00" definition-exists="true" ipc-concordant="F28F3/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F3/00</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Plate-like or laminated elements</text></title-part><title-part><text>Assemblies of plate-like or laminated elements </text><reference><text>specially adapted for movement <class-ref scheme="cpc">F28F5/00</class-ref></text></reference></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F28F3/005" definition-exists="false" ipc-concordant="F28F3/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F3/005</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Arrangements for preventing direct contact between different heat-exchange media </text><reference><text><class-ref scheme="cpc">F28F3/10</class-ref> takes precedence</text></reference></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F28F3/02" definition-exists="false" ipc-concordant="F28F3/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F3/02</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations </text><reference><text><class-ref scheme="cpc">F28F3/08</class-ref></text><text> takes precedence</text></reference></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F28F3/022" definition-exists="false" ipc-concordant="F28F3/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F3/022</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>the means being wires or pins</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F28F3/025" definition-exists="false" ipc-concordant="F28F3/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F3/025</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>the means being corrugated, plate-like elements</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="F28F3/027" definition-exists="false" ipc-concordant="F28F3/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F3/027</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>with openings, e.g. louvered corrugated fins; Assemblies of corrugated strips</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F28F3/04" definition-exists="false" ipc-concordant="F28F3/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F3/04</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>the means being integral with the element</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="F28F3/042" definition-exists="false" ipc-concordant="F28F3/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F3/042</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>in the form of local deformations of the element</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="F28F3/044" definition-exists="false" ipc-concordant="F28F3/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F3/044</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>the deformations being pontual, e.g. dimples</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="F28F3/046" definition-exists="false" ipc-concordant="F28F3/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F3/046</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>the deformations being linear, e.g. corrugations</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="F28F3/048" definition-exists="false" ipc-concordant="F28F3/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F3/048</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>in the form of ribs integral with the element or local variations in thickness of the element, e.g. grooves, microchannels</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F28F3/06" definition-exists="false" ipc-concordant="F28F3/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F3/06</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>the means being attachable to the element</text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F28F3/08" definition-exists="false" ipc-concordant="F28F3/08" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F3/08</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Elements constructed for building-up into stacks, e.g. capable of being taken apart for cleaning</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F28F3/083" definition-exists="false" ipc-concordant="F28F3/08" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F3/083</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>capable of being taken apart</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F28F3/086" definition-exists="false" ipc-concordant="F28F3/08" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F3/086</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>having one or more openings therein forming tubular heat-exchange passages</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F28F3/10" definition-exists="false" ipc-concordant="F28F3/10" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F3/10</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Arrangements for sealing the margins</text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F28F3/12" definition-exists="false" ipc-concordant="F28F3/12" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F3/12</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Elements constructed in the shape of a hollow panel, e.g. with channels </text><CPC-specific-text><reference><text><class-ref scheme="cpc">F28D1/02</class-ref>, <class-ref scheme="cpc">F28D1/03</class-ref> take precedence</text></reference></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F28F3/14" definition-exists="false" ipc-concordant="F28F3/14" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F3/14</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>by separating portions of a pair of joined sheets to form channels, e.g. by inflation </text><reference><text>manufacture thereof <class-ref scheme="cpc">B23P</class-ref></text></reference></title-part></class-title></classification-item></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="7" additional-only="false" sort-key="F28F5/00" definition-exists="true" ipc-concordant="F28F5/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F5/00</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Elements specially adapted for movement </text><reference><text>arrangements for moving the elements, <u>see</u> the appropriate subclass for the apparatus concerned</text></reference></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F28F5/02" definition-exists="false" ipc-concordant="F28F5/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F5/02</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Rotary drums or rollers</text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F28F5/04" definition-exists="false" ipc-concordant="F28F5/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F5/04</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Hollow impellers, e.g. stirring vane</text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F28F5/06" definition-exists="false" ipc-concordant="F28F5/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2016-05-01" status="published"><classification-symbol>F28F5/06</classification-symbol><class-title date-revised="2016-05-01"><title-part><text>Hollow screw conveyors</text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="7" additional-only="false" sort-key="F28F7/00" definition-exists="true" ipc-concordant="F28F7/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F7/00</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Elements not covered by group <class-ref scheme="cpc">F28F1/00</class-ref>, <class-ref scheme="cpc">F28F3/00</class-ref> or <class-ref scheme="cpc">F28F5/00</class-ref></text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F28F7/02" definition-exists="true" ipc-concordant="F28F7/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F7/02</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Blocks traversed by passages for heat-exchange media </text><CPC-specific-text><reference><text><class-ref scheme="cpc">F28D7/0008</class-ref> takes precedence</text></reference></CPC-specific-text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="7" additional-only="false" sort-key="F28F9/00" definition-exists="true" ipc-concordant="F28F9/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F9/00</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Casings</text></title-part><title-part><text>Header boxes</text></title-part><title-part><text>Auxiliary supports for elements</text></title-part><title-part><text>Auxiliary members within casings</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F28F9/001" definition-exists="false" ipc-concordant="F28F9/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F9/001</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Casings in the form of plate-like arrangements; Frames enclosing a heat exchange core</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F28F9/002" definition-exists="false" ipc-concordant="F28F9/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F9/002</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>with fastening means for other structures</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="F28F9/004" definition-exists="false" ipc-concordant="F28F9/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F2009/004</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Common frame elements for multiple cores</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F28F9/005" definition-exists="false" ipc-concordant="F28F9/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F9/005</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Other auxiliary members within casings, e.g. internal filling means or sealing means</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F28F9/007" definition-exists="false" ipc-concordant="F28F9/007" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F9/007</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Auxiliary supports for elements</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F28F9/0075" definition-exists="false" ipc-concordant="F28F9/007" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F9/0075</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Supports for plates or plate assemblies</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F28F9/013" definition-exists="false" ipc-concordant="F28F9/013" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F9/013</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>for tubes or tube-assemblies</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="F28F9/0131" definition-exists="false" ipc-concordant="F28F9/013" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F9/0131</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>formed by plates </text><reference><text><class-ref scheme="cpc">F28F9/0138</class-ref> takes precedence</text></reference></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="F28F9/0132" definition-exists="false" ipc-concordant="F28F9/013" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F9/0132</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>formed by slats, tie-rods, articulated or expandable rods</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="F28F9/0133" definition-exists="false" ipc-concordant="F28F9/013" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F9/0133</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>formed by concentric strips</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="F28F9/0135" definition-exists="false" ipc-concordant="F28F9/013" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F9/0135</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>formed by grids having only one tube per closed grid opening </text><reference><text><class-ref scheme="cpc">F28F9/0132</class-ref> and <class-ref scheme="cpc">F28F9/0133</class-ref> take precedence</text></reference></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="F28F9/0136" definition-exists="false" ipc-concordant="F28F9/013" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F9/0136</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>formed by intersecting strips</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="F28F9/0137" definition-exists="false" ipc-concordant="F28F9/013" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F9/0137</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>formed by wires, e.g. helically coiled </text><reference><text><class-ref scheme="cpc">F28F9/0135</class-ref> takes precedence</text></reference></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="F28F9/0138" definition-exists="false" ipc-concordant="F28F9/013" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F9/0138</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>formed by sleeves for finned tubes</text></CPC-specific-text></title-part></class-title></classification-item></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F28F9/02" definition-exists="false" ipc-concordant="F28F9/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F9/02</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Header boxes</text></title-part><title-part><text>End plates</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F28F9/0202" definition-exists="false" ipc-concordant="F28F9/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F9/0202</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Header boxes having their inner space divided by partitions</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="F28F9/0204" definition-exists="false" ipc-concordant="F28F9/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F9/0204</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>for elongated header box, e.g. with transversal and longitudinal partitions</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="F28F9/0207" definition-exists="false" ipc-concordant="F28F9/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F9/0207</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>the longitudinal or transversal partitions being separate elements attached to header boxes </text><reference><text><class-ref scheme="cpc">F28F9/0212</class-ref>, <class-ref scheme="cpc">F28F9/0217</class-ref> take precedence</text></reference></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="F28F9/0209" definition-exists="false" ipc-concordant="F28F9/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F9/0209</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>having only transversal partitions</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="12" additional-only="false" sort-key="F28F9/0212" definition-exists="false" ipc-concordant="F28F9/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F9/0212</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>the partitions being separate elements attached to header boxes</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="F28F9/0214" definition-exists="false" ipc-concordant="F28F9/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F9/0214</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>having only longitudinal partitions</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="12" additional-only="false" sort-key="F28F9/0217" definition-exists="false" ipc-concordant="F28F9/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F9/0217</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>the partitions being separate elements attached to header boxes</text></CPC-specific-text></title-part></class-title></classification-item></classification-item></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F28F9/0219" definition-exists="false" ipc-concordant="F28F9/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F9/0219</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Arrangements for sealing end plates into casing or header box; Header box sub-elements </text><reference><text><class-ref scheme="cpc">F28F9/0236</class-ref> takes precedence</text></reference></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="F28F9/0221" definition-exists="false" ipc-concordant="F28F9/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F9/0221</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Header boxes or end plates formed by stacked elements</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="F28F9/0224" definition-exists="false" ipc-concordant="F28F9/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F9/0224</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Header boxes formed by sealing end plates into covers </text><reference><text><class-ref scheme="cpc">F28F9/0221</class-ref> takes precedence</text></reference></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="F28F9/0226" definition-exists="false" ipc-concordant="F28F9/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F9/0226</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>with resilient gaskets</text></CPC-specific-text></title-part></class-title></classification-item></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F28F9/0229" definition-exists="false" ipc-concordant="F28F9/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F9/0229</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Double end plates; Single end plates with hollow spaces</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F28F9/0231" definition-exists="false" ipc-concordant="F28F9/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F9/0231</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Header boxes having an expansion chamber</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F28F9/0234" definition-exists="false" ipc-concordant="F28F9/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F9/0234</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>having a second heat exchanger disposed there within, e.g. oil cooler</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F28F9/0236" definition-exists="false" ipc-concordant="F28F9/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F9/0236</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>floating elements</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="F28F9/0239" definition-exists="false" ipc-concordant="F28F9/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F9/0239</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>floating header boxes</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="F28F9/0241" definition-exists="false" ipc-concordant="F28F9/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F9/0241</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>floating end plates</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F28F9/0243" definition-exists="false" ipc-concordant="F28F9/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F9/0243</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Header boxes having a circular cross-section</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F28F9/0246" definition-exists="false" ipc-concordant="F28F9/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F9/0246</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Arrangements for connecting header boxes with flow lines</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="F28F9/0248" definition-exists="false" ipc-concordant="F28F9/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F9/0248</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Arrangements for sealing connectors to header boxes</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="F28F9/0251" definition-exists="false" ipc-concordant="F28F9/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F9/0251</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Massive connectors, e.g. blocks; Plate-like connectors</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="F28F9/0253" definition-exists="false" ipc-concordant="F28F9/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F9/0253</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>with multiple channels, e.g. with combined inflow and outflow channels</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="F28F9/0256" definition-exists="false" ipc-concordant="F28F9/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F9/0256</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Arrangements for coupling connectors with flow lines</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="F28F9/0258" definition-exists="false" ipc-concordant="F28F9/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F9/0258</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>of quick acting type, e.g. with snap action</text></CPC-specific-text></title-part></class-title></classification-item></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F28F9/026" definition-exists="false" ipc-concordant="F28F9/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F9/026</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>with static flow control means, e.g. with means for uniformly distributing heat exchange media into conduits</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="F28F9/0263" definition-exists="false" ipc-concordant="F28F9/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F9/0263</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>by varying the geometry or cross-section of header box</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="F28F9/0265" definition-exists="false" ipc-concordant="F28F9/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F9/0265</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>by using guiding means or impingement means inside the header box</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="F28F9/0268" definition-exists="false" ipc-concordant="F28F9/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F9/0268</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>in the form of multiple deflectors for channeling the heat exchange medium</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="F28F9/027" definition-exists="false" ipc-concordant="F28F9/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F9/027</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>in the form of distribution pipes</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="F28F9/0273" definition-exists="false" ipc-concordant="F28F9/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F9/0273</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>with multiple holes</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="F28F9/0275" definition-exists="false" ipc-concordant="F28F9/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F9/0275</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>with multiple branch pipes</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="F28F9/0278" definition-exists="false" ipc-concordant="F28F9/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F9/0278</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>in the form of stacked distribution plates or perforated plates arranged over end plates</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="F28F9/028" definition-exists="false" ipc-concordant="F28F9/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F9/028</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>by using inserts for modifying the pattern of flow inside the header box, e.g. by using flow restrictors or permeable bodies or blocks with channels</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="F28F9/0282" definition-exists="false" ipc-concordant="F28F9/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F9/0282</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>by varying the geometry of conduit ends, e.g. by using inserts or attachments for modifying the pattern of flow at the conduit inlet or outlet</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="F28F9/0285" definition-exists="false" ipc-concordant="F28F9/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F2009/0285</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Other particular headers or end plates</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="F28F9/0287" definition-exists="false" ipc-concordant="F28F9/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F2009/0287</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>having passages for different heat exchange media</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="F28F9/029" definition-exists="false" ipc-concordant="F28F9/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F2009/029</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>with increasing or decreasing cross-section, e.g. having conical shape</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="F28F9/0292" definition-exists="false" ipc-concordant="F28F9/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F2009/0292</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>with fins</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="F28F9/0295" definition-exists="false" ipc-concordant="F28F9/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F2009/0295</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>comprising cooling circuits</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="F28F9/0297" definition-exists="false" ipc-concordant="F28F9/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F2009/0297</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Side headers, e.g. for radiators having conduits laterally connected to common header</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F28F9/04" definition-exists="false" ipc-concordant="F28F9/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F9/04</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Arrangements for sealing elements into header boxes or end plates </text><CPC-specific-text><reference><text>arrangements for sealing flow lines connectors to header boxes <class-ref scheme="cpc">F28F9/0248</class-ref></text></reference></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="F28F9/06" definition-exists="false" ipc-concordant="F28F9/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F9/06</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>by dismountable joints</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="F28F9/08" definition-exists="false" ipc-concordant="F28F9/08" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F9/08</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>by wedge-type connections, e.g. taper ferrule</text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="F28F9/10" definition-exists="false" ipc-concordant="F28F9/10" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F9/10</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>by screw-type connections, e.g. gland</text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="F28F9/12" definition-exists="false" ipc-concordant="F28F9/12" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F9/12</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>by flange-type connections</text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="F28F9/14" definition-exists="false" ipc-concordant="F28F9/14" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F9/14</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>by force-joining</text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="F28F9/16" definition-exists="false" ipc-concordant="F28F9/16" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F9/16</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>by permanent joints, e.g. by rolling </text><reference><text>metal-working procedures in general <class-ref scheme="cpc">B21</class-ref>, <class-ref scheme="cpc">B32</class-ref>; particularly <class-ref scheme="cpc">B21D39/06</class-ref>, <class-ref scheme="cpc">B23K</class-ref></text></reference></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="F28F9/162" definition-exists="false" ipc-concordant="F28F9/16" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F9/162</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>by using bonding or sealing substances, e.g. adhesives </text><reference><text><class-ref scheme="cpc">F28F9/18</class-ref> takes precedence</text></reference></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="F28F9/165" definition-exists="false" ipc-concordant="F28F9/16" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F9/165</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>by using additional preformed parts, e.g. sleeves, gaskets </text><reference><text><class-ref scheme="cpc">F28F9/185</class-ref> takes precedence</text></reference></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="12" additional-only="false" sort-key="F28F9/167" definition-exists="false" ipc-concordant="F28F9/16" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F9/167</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>the parts being inserted in the heat-exchange conduits</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="F28F9/18" definition-exists="false" ipc-concordant="F28F9/18" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F9/18</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>by welding</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="12" additional-only="false" sort-key="F28F9/182" definition-exists="false" ipc-concordant="F28F9/18" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F9/182</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>the heat-exchange conduits having ends with a particular shape, e.g. deformed; the heat-exchange conduits or end plates having supplementary joining means, e.g. abutments</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="12" additional-only="false" sort-key="F28F9/185" definition-exists="false" ipc-concordant="F28F9/18" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F9/185</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>with additional preformed parts</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="12" additional-only="false" sort-key="F28F9/187" definition-exists="false" ipc-concordant="F28F9/18" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F9/187</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>at least one of the parts being non-metallic, e.g. heat-sealing plastic elements</text></CPC-specific-text></title-part></class-title></classification-item></classification-item></classification-item></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F28F9/20" definition-exists="false" ipc-concordant="F28F9/20" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F9/20</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Arrangements of heat reflectors, e.g. separately-insertible reflecting walls</text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F28F9/22" definition-exists="false" ipc-concordant="F28F9/22" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F9/22</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Arrangements for directing heat-exchange media into successive compartments, e.g. arrangements of guide plates</text></title-part></class-title>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="F28F9/222" definition-exists="false" ipc-concordant="F28F9/22" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F2009/222</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Particular guide plates, baffles or deflectors, e.g. having particular orientation relative to an elongated casing or conduit</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="F28F9/224" definition-exists="false" ipc-concordant="F28F9/22" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F2009/224</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Longitudinal partitions</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="F28F9/226" definition-exists="false" ipc-concordant="F28F9/22" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F2009/226</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Transversal partitions</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="F28F9/228" definition-exists="false" ipc-concordant="F28F9/22" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F2009/228</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Oblique partitions</text></CPC-specific-text></title-part></class-title></classification-item></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F28F9/24" definition-exists="false" ipc-concordant="F28F9/24" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F9/24</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Arrangements for promoting turbulent flow of heat-exchange media, e.g. by plates </text><reference><text><class-ref scheme="cpc">F28F1/38</class-ref> takes precedence; in general <class-ref scheme="cpc">F15D</class-ref></text></reference></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F28F9/26" definition-exists="false" ipc-concordant="F28F9/26" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2017-08-01" status="published"><classification-symbol>F28F9/26</classification-symbol><class-title date-revised="2017-08-01"><title-part><text>Arrangements for connecting different sections of heat-exchange elements, e.g. of radiators </text><reference><text>connecting different sections in water heaters <class-ref scheme="cpc">F24H9/14</class-ref> </text><CPC-specific-text><text>, connecting headers with inlet or outlet fittings <class-ref scheme="cpc">F28F9/0246</class-ref></text></CPC-specific-text></reference></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F28F9/262" definition-exists="false" ipc-concordant="F28F9/26" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F9/262</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>for radiators </text><reference><text><class-ref scheme="cpc">F28D1/0408</class-ref> takes precedence</text></reference></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="F28F9/264" definition-exists="false" ipc-concordant="F28F9/26" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F9/264</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>by sleeves, nipples</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="F28F9/266" definition-exists="false" ipc-concordant="F28F9/26" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F9/266</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>by screw-type connections</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="F28F9/268" definition-exists="false" ipc-concordant="F28F9/26" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F9/268</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>by permanent joints, e.g. by welding</text></CPC-specific-text></title-part></class-title></classification-item></classification-item></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="7" additional-only="false" sort-key="F28F11/00" definition-exists="true" ipc-concordant="F28F11/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F11/00</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Arrangements for sealing leaky tubes and conduits </text><reference><text>stopping flow from or in pipes in general <class-ref scheme="cpc">F16L55/10</class-ref></text></reference></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F28F11/02" definition-exists="false" ipc-concordant="F28F11/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F11/02</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>using obturating elements, e.g. washers, inserted and operated independently of each other </text><reference><text><class-ref scheme="cpc">F28F11/06</class-ref> takes precedence</text></reference></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F28F11/04" definition-exists="false" ipc-concordant="F28F11/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F11/04</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>using pairs of obturating elements, e.g. washers, mounted upon central operating rods </text><reference><text><class-ref scheme="cpc">F28F11/06</class-ref> takes precedence</text></reference></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F28F11/06" definition-exists="false" ipc-concordant="F28F11/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F11/06</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>using automatic tube obturating appliances</text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="7" additional-only="false" sort-key="F28F13/00" definition-exists="true" ipc-concordant="F28F13/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2016-05-01" status="published"><classification-symbol>F28F13/00</classification-symbol><class-title date-revised="2016-05-01"><title-part><text>Arrangements for modifying heat-transfer, e.g. increasing, decreasing </text><reference><text><class-ref scheme="cpc">F28F1/00</class-ref>&#160;-&#160;<class-ref scheme="cpc">F28F11/00</class-ref> take precedence</text></reference></title-part></class-title>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F28F13/001" definition-exists="false" ipc-concordant="F28F13/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F2013/001</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Particular heat conductive materials, e.g. superconductive elements </text><reference><text>for thermal joints <class-ref scheme="cpc">F28F2013/006</class-ref></text></reference></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F28F13/003" definition-exists="false" ipc-concordant="F28F13/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F13/003</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>by using permeable mass, perforated or porous materials </text><reference><text><class-ref scheme="cpc">F28F13/18</class-ref> takes precedence</text></reference></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F28F13/005" definition-exists="false" ipc-concordant="F28F13/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F2013/005</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Thermal joints</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="F28F13/006" definition-exists="false" ipc-concordant="F28F13/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F2013/006</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Heat conductive materials</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="F28F13/008" definition-exists="false" ipc-concordant="F28F13/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F2013/008</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Variable conductance materials; Thermal switches</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F28F13/02" definition-exists="false" ipc-concordant="F28F13/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F13/02</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>by influencing fluid boundary </text><reference><text>boundary-layer control in general <class-ref scheme="cpc">F15D</class-ref></text></reference></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F28F13/04" definition-exists="false" ipc-concordant="F28F13/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F13/04</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>by preventing the formation of continuous films of condensate on heat-exchange surfaces, e.g. by promoting droplet formation </text><CPC-specific-text><reference><text><class-ref scheme="cpc">F28F13/18</class-ref> takes precedence</text></reference></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F28F13/06" definition-exists="false" ipc-concordant="F28F13/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F13/06</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>by affecting the pattern of flow of the heat-exchange media </text><CPC-specific-text><reference><text><class-ref scheme="cpc">F28F13/003</class-ref> takes precedence; static flow control means in header boxes <class-ref scheme="cpc">F28F9/026</class-ref></text></reference></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F28F13/08" definition-exists="false" ipc-concordant="F28F13/08" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F13/08</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>by varying the cross-section of the flow channels</text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F28F13/10" definition-exists="false" ipc-concordant="F28F13/10" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F13/10</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>by imparting a pulsating motion to the flow, e.g. by sonic vibration</text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F28F13/12" definition-exists="false" ipc-concordant="F28F13/12" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F13/12</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>by creating turbulence, e.g. by stirring, by increasing the force of circulation </text><reference><text><class-ref scheme="cpc">F28F13/08</class-ref> takes precedence</text></reference></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="F28F13/125" definition-exists="false" ipc-concordant="F28F13/12" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F13/125</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>by stirring</text></CPC-specific-text></title-part></class-title></classification-item></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F28F13/14" definition-exists="false" ipc-concordant="F28F13/14" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F13/14</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>by endowing the walls of conduits with zones of different degrees of conduction of heat</text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F28F13/16" definition-exists="false" ipc-concordant="F28F13/16" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F13/16</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>by applying an electrostatic field to the body of the heat-exchange medium</text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F28F13/18" definition-exists="false" ipc-concordant="F28F13/18" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F13/18</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>by applying coatings, e.g. radiation-absorbing, radiation-reflecting</text></title-part><title-part><text>by surface treatment, e.g. polishing</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F28F13/182" definition-exists="false" ipc-concordant="F28F13/18" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F13/182</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>especially adapted for evaporator or condenser surfaces </text><reference><text><class-ref scheme="cpc">F28F13/187</class-ref> takes precedence</text></reference></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F28F13/185" definition-exists="false" ipc-concordant="F28F13/18" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F13/185</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Heat-exchange surfaces provided with microstructures or with porous coatings</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="F28F13/187" definition-exists="false" ipc-concordant="F28F13/18" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F13/187</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>especially adapted for evaporator surfaces or condenser surfaces, e.g. with nucleation sites</text></CPC-specific-text></title-part></class-title></classification-item></classification-item></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="7" additional-only="false" sort-key="F28F17/00" definition-exists="true" ipc-concordant="F28F17/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F17/00</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Removing ice or water from heat-exchange apparatus</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F28F17/005" definition-exists="false" ipc-concordant="F28F17/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F17/005</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Means for draining condensates from heat exchangers, e.g. from evaporators </text><reference><text><class-ref scheme="cpc">F28B9/08</class-ref> takes precedence</text></reference></CPC-specific-text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="7" additional-only="false" sort-key="F28F19/00" definition-exists="true" ipc-concordant="F28F19/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F19/00</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Preventing the formation of deposits or corrosion, e.g. by using filters </text><CPC-specific-text><text>or scrapers</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F28F19/002" definition-exists="false" ipc-concordant="F28F19/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F19/002</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>by using inserts or attachments</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="F28F19/006" definition-exists="false" ipc-concordant="F28F19/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F19/006</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Preventing deposits of ice</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="F28F19/06" definition-exists="false" ipc-concordant="F28F19/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F19/06</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>of metal</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="F28F21/003" definition-exists="false" ipc-concordant="F28F21/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F21/003</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>for domestic or space-heating systems</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F28F21/006" definition-exists="false" ipc-concordant="F28F21/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F21/006</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>of glass</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F28F21/02" definition-exists="false" ipc-concordant="F28F21/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F21/02</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>of carbon, e.g. graphite</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="F28F21/045" definition-exists="false" ipc-concordant="F28F21/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F21/045</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>for domestic or space-heating systems</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="F28F21/061" definition-exists="false" ipc-concordant="F28F21/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F21/061</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>for domestic or space-heating systems</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F28F21/062" definition-exists="false" ipc-concordant="F28F21/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F21/062</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>the heat-exchange apparatus employing tubular conduits</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="F28F21/063" definition-exists="false" ipc-concordant="F28F21/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F21/063</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>for domestic or space-heating systems</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="F28F21/066" definition-exists="false" ipc-concordant="F28F21/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F21/066</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>for domestic or space-heating systems</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F28F21/067" definition-exists="false" ipc-concordant="F28F21/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F21/067</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Details</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="F28F21/068" definition-exists="false" ipc-concordant="F28F21/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F21/068</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>for domestic or space-heating systems</text></CPC-specific-text></title-part></class-title></classification-item></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F28F21/08" definition-exists="false" ipc-concordant="F28F21/08" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F21/08</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>of metal</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F28F21/081" definition-exists="false" ipc-concordant="F28F21/08" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F21/081</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Heat exchange elements made from metals or metal alloys</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="F28F21/082" definition-exists="false" ipc-concordant="F28F21/08" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F21/082</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>from steel or ferrous alloys</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="F28F21/083" definition-exists="false" ipc-concordant="F28F21/08" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F21/083</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>from stainless steel</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="F28F21/084" definition-exists="false" ipc-concordant="F28F21/08" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F21/084</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>from aluminium or aluminium alloys</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="F28F21/085" definition-exists="false" ipc-concordant="F28F21/08" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F21/085</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>from copper or copper alloys</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="F28F21/086" definition-exists="false" ipc-concordant="F28F21/08" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F21/086</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>from titanium or titanium alloys</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="F28F21/087" definition-exists="false" ipc-concordant="F28F21/08" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F21/087</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>from nickel or nickel alloys</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F28F21/088" definition-exists="false" ipc-concordant="F28F21/08" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F21/088</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>for domestic or space-heating systems</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F28F21/089" definition-exists="false" ipc-concordant="F28F21/08" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F21/089</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Coatings, claddings or bonding layers made from metals or metal alloys </text><reference><text><class-ref scheme="cpc">F28F19/06</class-ref> takes precedence</text></reference></CPC-specific-text></title-part></class-title></classification-item></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="7" additional-only="false" sort-key="F28F23/00" definition-exists="true" ipc-concordant="F28F23/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F23/00</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Features relating to the use of intermediate heat-exchange materials, e.g. selection of compositions </text><reference><text>heat-transfer, heat-exchange or heat-storage materials <class-ref scheme="cpc">C09K5/00</class-ref></text></reference></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F28F23/02" definition-exists="false" ipc-concordant="F28F23/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F23/02</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Arrangements for obtaining or maintaining same in a liquid state</text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="7" additional-only="false" sort-key="F28F25/00" definition-exists="true" ipc-concordant="F28F25/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F25/00</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Component parts of trickle coolers </text><reference><text>arrangements for increasing heat transfer <class-ref scheme="cpc">F28F13/00</class-ref>; controlling arrangements <class-ref scheme="cpc">F28F27/00</class-ref></text></reference></title-part></class-title>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F28F25/005" definition-exists="false" ipc-concordant="F28F25/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F2025/005</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Liquid collection; Liquid treatment; Liquid recirculation; Addition of make-up liquid</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F28F25/02" definition-exists="false" ipc-concordant="F28F25/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F25/02</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>for distributing, circulating, and accumulating liquid </text><reference><text>spraying or atomising in general <class-ref scheme="cpc">B05B</class-ref>, <class-ref scheme="cpc">B05D</class-ref></text></reference></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F28F25/04" definition-exists="false" ipc-concordant="F28F25/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F25/04</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Distributing or accumulator troughs</text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F28F25/06" definition-exists="false" ipc-concordant="F28F25/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F25/06</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Spray nozzles or spray pipes</text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F28F25/08" definition-exists="false" ipc-concordant="F28F25/08" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F25/08</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Splashing boards or grids, e.g. for converting liquid sprays into liquid films</text></title-part><title-part><text>Elements or beds for increasing the area of the contact surface </text><reference><text>packing elements <u>per se</u> <class-ref scheme="cpc">B01J19/30</class-ref>, <class-ref scheme="cpc">B01J19/32</class-ref></text></reference></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="F28F25/082" definition-exists="false" ipc-concordant="F28F25/08" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F25/082</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Spaced elongated bars, laths; Supports therefor</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="F28F25/085" definition-exists="false" ipc-concordant="F28F25/08" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F25/085</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Substantially horizontal grids; Blocks</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="F28F25/087" definition-exists="false" ipc-concordant="F28F25/08" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F25/087</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Vertical or inclined sheets; Supports or spacers</text></CPC-specific-text></title-part></class-title></classification-item></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F28F25/10" definition-exists="false" ipc-concordant="F28F25/10" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F25/10</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>for feeding gas or vapour</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F28F25/12" definition-exists="false" ipc-concordant="F28F25/12" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F25/12</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Ducts</text></title-part><title-part><text>Guide vanes, e.g. for carrying currents to distinct zones</text></title-part></class-title></classification-item></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="7" additional-only="false" sort-key="F28F27/00" definition-exists="true" ipc-concordant="F28F27/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F27/00</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Control arrangements or safety devices specially adapted for heat-exchange or heat-transfer apparatus </text><reference><text>control arrangements in general <class-ref scheme="cpc">G05</class-ref></text></reference></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F28F27/003" definition-exists="false" ipc-concordant="F28F27/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F27/003</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>specially adapted for cooling towers</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F28F27/006" definition-exists="false" ipc-concordant="F28F27/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F27/006</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>specially adapted for regenerative heat-exchange apparatus</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F28F27/02" definition-exists="false" ipc-concordant="F28F27/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F27/02</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>for controlling the distribution of heat-exchange media between different channels </text><reference><CPC-specific-text><text>static flow control means in header boxes <class-ref scheme="cpc">F28F9/026</class-ref></text></CPC-specific-text><text>; arrangements of guide plates or guide vanes <class-ref scheme="cpc">F28F9/22</class-ref>, <class-ref scheme="cpc">F28F25/12</class-ref></text></reference></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="7" additional-only="false" sort-key="F28F99/00" definition-exists="false" ipc-concordant="F28F99/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F99/00</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Subject matter not provided for in other groups of this subclass</text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="true" not-allocatable="true" level="6" additional-only="true" sort-key="F28F200/00" date-revised="2013-01-01" status="published"><classification-symbol>F28F2200/00</classification-symbol>
<classification-item breakdown-code="true" not-allocatable="false" level="7" additional-only="true" sort-key="F28F200/00" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F2200/00</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Prediction</text></title-part><title-part><text>Simulation</text></title-part><title-part><text>Testing </text><reference><text>measuring quantity of heat conveyed by flowing mediums <class-ref scheme="cpc">G01K17/06</class-ref></text></reference></title-part></class-title>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F28F200/005" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F2200/005</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Testing heat pipes</text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="7" additional-only="true" sort-key="F28F210/00" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F2210/00</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Heat exchange conduits</text></title-part></class-title>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F28F210/02" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F2210/02</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>with particular branching, e.g. fractal conduit arrangements</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F28F210/04" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F2210/04</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Arrangements of conduits common to different heat exchange sections, the conduits having channels for different circuits</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F28F210/06" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F2210/06</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>having walls comprising obliquely extending corrugations, e.g. in the form of threads</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F28F210/08" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F2210/08</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Assemblies of conduits having different features</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F28F210/10" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F2210/10</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Particular layout, e.g. for uniform temperature distribution</text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="7" additional-only="true" sort-key="F28F215/00" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F2215/00</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Fins</text></title-part></class-title>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F28F215/02" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F2215/02</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Arrangements of fins common to different heat exchange sections, the fins being in contact with different heat exchange media</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F28F215/04" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F2215/04</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Assemblies of fins having different features, e.g. with different fin densities</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F28F215/06" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F2215/06</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Hollow fins</text></title-part><title-part><text>fins with internal circuits</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F28F215/08" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F2215/08</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>with openings, e.g. louvers </text><reference><text>zig-zag fins with openings <class-ref scheme="cpc">F28F1/128</class-ref>, common transversal fins with openings <class-ref scheme="cpc">F28F1/325</class-ref>, corrugated fins with openings <class-ref scheme="cpc">F28F3/027</class-ref></text></reference></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F28F215/10" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F2215/10</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Secondary fins, e.g. projections or recesses on main fins</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F28F215/12" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F2215/12</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>with U-shaped slots for laterally inserting conduits</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F28F215/14" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F2215/14</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>in the form of movable or loose fins</text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="7" additional-only="true" sort-key="F28F220/00" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F2220/00</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Closure means, e.g. end caps on header boxes or plugs on conduits</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="7" additional-only="true" sort-key="F28F225/00" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F2225/00</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Reinforcing means</text></title-part></class-title>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F28F225/02" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F2225/02</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>for casings</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F28F225/04" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F2225/04</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>for conduits</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F28F225/06" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F2225/06</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>for fins</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F28F225/08" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F2225/08</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>for header boxes</text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="7" additional-only="true" sort-key="F28F230/00" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F2230/00</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Sealing means</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="7" additional-only="true" sort-key="F28F235/00" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F2235/00</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Means for filling gaps between elements, e.g. between conduits within casings</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="7" additional-only="true" sort-key="F28F240/00" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F2240/00</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Spacing means</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="7" additional-only="true" sort-key="F28F245/00" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F2245/00</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Coatings</text></title-part><title-part><text>Surface treatments</text></title-part></class-title>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F28F245/02" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F2245/02</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>hydrophilic</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F28F245/04" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F2245/04</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>hydrophobic</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F28F245/06" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F2245/06</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>having particular radiating, reflecting or absorbing features, e.g. for improving heat transfer by radiation</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F28F245/08" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F2245/08</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>self-cleaning</text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="7" additional-only="true" sort-key="F28F250/00" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F2250/00</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Arrangements for modifying the flow of the heat exchange media </text><reference><text>in general <class-ref scheme="cpc">F28F13/06</class-ref></text></reference><text>, e.g. flow guiding means </text><reference><text>in casings <class-ref scheme="cpc">F28F9/22</class-ref></text></reference></title-part><title-part><text>Particular flow patterns</text></title-part></class-title>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F28F250/02" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F2250/02</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Streamline-shaped elements</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F28F250/04" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F2250/04</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Communication passages between channels</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F28F250/06" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F2250/06</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Derivation channels, e.g. bypass</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F28F250/08" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F2250/08</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Fluid driving means, e.g. pumps, fans</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F28F250/10" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F2250/10</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Particular pattern of flow of the heat exchange media</text></title-part></class-title>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="F28F250/102" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F2250/102</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>with change of flow direction</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="F28F250/104" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F2250/104</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>with parallel flow</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="F28F250/106" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F2250/106</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>with cross flow</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="F28F250/108" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F2250/108</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>with combined cross flow and parallel flow</text></title-part></class-title></classification-item></classification-item></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="7" additional-only="true" sort-key="F28F255/00" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F2255/00</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Heat exchanger elements made of materials having special features or resulting from particular manufacturing processes</text></title-part></class-title>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F28F255/02" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F2255/02</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Flexible elements</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F28F255/04" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F2255/04</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>comprising shape memory alloys or bimetallic elements</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F28F255/06" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F2255/06</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>composite, e.g. polymers with fillers or fibres</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F28F255/08" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F2255/08</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>pressed</text></title-part><title-part><text>stamped</text></title-part><title-part><text>deep-drawn</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F28F255/10" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F2255/10</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>made by hydroforming</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F28F255/12" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F2255/12</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>expanded or perforated metal plate</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F28F255/14" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F2255/14</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>molded</text></title-part></class-title>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="F28F255/143" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F2255/143</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>injection molded</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="F28F255/146" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F2255/146</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>overmolded</text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F28F255/16" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F2255/16</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>extruded</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F28F255/18" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F2255/18</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>sintered</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F28F255/20" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F2255/20</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>with nanostructures</text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="7" additional-only="true" sort-key="F28F260/00" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2017-08-01" status="published"><classification-symbol>F28F2260/00</classification-symbol><class-title date-revised="2017-08-01"><title-part><text>Heat exchangers or heat exchange elements having special size, e.g. microstructures </text><reference><text>microheat pipes <class-ref scheme="cpc">F28D2015/0225</class-ref>; nanostructures <class-ref scheme="cpc">F28F2255/20</class-ref></text></reference></title-part></class-title>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F28F260/02" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F2260/02</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>having microchannels</text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="7" additional-only="true" sort-key="F28F265/00" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F2265/00</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Safety or protection arrangements</text></title-part><title-part><text>Arrangements for preventing malfunction </text><reference><text>control or monitoring devices <class-ref scheme="cpc">F28F27/00</class-ref></text></reference></title-part></class-title>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F28F265/02" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F2265/02</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>in the form of screens or covers </text><reference><text>heat shields <class-ref scheme="cpc">F28F2265/10</class-ref></text></reference></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F28F265/06" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F2265/06</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>by using means for draining heat exchange media from heat exchangers</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F28F265/10" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F2265/10</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>for preventing overheating, e.g. heat shields </text><reference><text>thermal insulation <class-ref scheme="cpc">F28F2270/00</class-ref></text></reference></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F28F265/12" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F2265/12</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>for preventing overpressure</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F28F265/14" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F2265/14</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>for preventing damage by freezing, e.g. for accommodating volume expansion</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F28F265/16" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F2265/16</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>for preventing leakage</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F28F265/18" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F2265/18</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>for removing contaminants, e.g. for degassing</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F28F265/20" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F2265/20</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>for preventing development of microorganisms</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F28F265/22" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F2265/22</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>for draining</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F28F265/24" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F2265/24</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>for electrical insulation</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F28F265/26" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F2265/26</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>for allowing differential expansion between elements </text><reference><text>floating header box elements <class-ref scheme="cpc">F28F9/0236</class-ref></text></reference></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F28F265/28" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F2265/28</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>for preventing noise </text><reference><text>by preventing vibrations <class-ref scheme="cpc">F28F2265/30</class-ref></text></reference></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F28F265/30" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F2265/30</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>for preventing vibrations</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F28F265/32" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F2265/32</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>for limiting movements, e.g. stops, locking means</text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="7" additional-only="true" sort-key="F28F270/00" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F2270/00</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Thermal insulation</text></title-part><title-part><text>Thermal decoupling</text></title-part></class-title>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F28F270/02" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F2270/02</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>by using blind conduits</text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="7" additional-only="true" sort-key="F28F275/00" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F2275/00</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Fastening</text></title-part><title-part><text>Joining</text></title-part></class-title>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F28F275/02" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F2275/02</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>by using bonding materials </text><reference><text>brazing <class-ref scheme="cpc">F28F2275/04</class-ref></text></reference></title-part><title-part><text>by embedding elements in particular materials</text></title-part></class-title>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="F28F275/025" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F2275/025</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>by using adhesives</text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F28F275/04" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F2275/04</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>by brazing </text><reference><text>brazing heat exchangers <class-ref scheme="cpc">B23K1/0012</class-ref></text></reference></title-part></class-title>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="F28F275/045" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F2275/045</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>with particular processing steps, e.g. by allowing displacement of parts during brazing or by using a reservoir for storing brazing material</text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F28F275/06" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2018-08-01" status="published"><classification-symbol>F28F2275/06</classification-symbol><class-title date-revised="2018-08-01"><title-part><text>by welding </text><reference><text>welding heat exchangers <class-ref scheme="cpc">B23K2101/14</class-ref></text></reference></title-part></class-title>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="F28F275/061" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F2275/061</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>by diffusion bonding</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="F28F275/062" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F2275/062</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>by impact pressure or friction welding</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="F28F275/064" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F2275/064</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>by induction welding or by using microwaves</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="F28F275/065" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F2275/065</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>by ultrasonic or vibration welding</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="F28F275/067" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F2275/067</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>by laser welding</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="F28F275/068" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F2275/068</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>by explosive welding</text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F28F275/08" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F2275/08</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>by clamping or clipping</text></title-part></class-title>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="F28F275/085" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F2275/085</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>with snap connection</text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F28F275/10" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F2275/10</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>by force joining</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F28F275/12" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F2275/12</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>by methods involving deformation of the elements</text></title-part></class-title>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="F28F275/122" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F2275/122</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>by crimping, caulking or clinching</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="F28F275/125" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F2275/125</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>by bringing elements together and expanding</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="F28F275/127" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F2275/127</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>by shrinking</text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F28F275/14" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F2275/14</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>by using form fitting connection, e.g. with tongue and groove</text></title-part></class-title>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="F28F275/143" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F2275/143</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>with pin and hole connections</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="F28F275/146" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F2275/146</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>with bayonet connections</text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F28F275/16" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F2275/16</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>with toothed elements, e.g. with serrations</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F28F275/18" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F2275/18</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>by using wedge effect</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F28F275/20" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F2275/20</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>with threaded elements</text></title-part></class-title>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="F28F275/205" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F2275/205</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>with of tie-rods</text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F28F275/22" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F2275/22</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>by using magnetic effect</text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="7" additional-only="true" sort-key="F28F280/00" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F2280/00</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Mounting arrangements</text></title-part><title-part><text>Arrangements for facilitating assembling or disassembling of heat exchanger parts</text></title-part></class-title>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F28F280/02" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F2280/02</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Removable elements</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F28F280/04" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F2280/04</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Means for preventing wrong assembling of parts</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F28F280/06" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F2280/06</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Adapter frames, e.g. for mounting heat exchanger cores on other structure and for allowing fluidic connections</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F28F280/08" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F2280/08</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Tolerance compensating means</text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F28F280/10" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F2280/10</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Movable elements, e.g. being pivotable </text><reference><text>elements specially adapted for movements <class-ref scheme="cpc">F28F5/00</class-ref></text></reference></title-part></class-title>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="F28F280/105" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F28F2280/105</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>with hinged connections</text></title-part></class-title></classification-item></classification-item></classification-item></classification-item></classification-item></class-scheme>