SHEET-TYPE OHMIC HEATING ELEMENT
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United States of America Patent
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Issued Date -
Nov 6, 2014
app pub date -
Dec 6, 2012
filing date -
Dec 15, 2011
priority date (Note) -
Abandoned
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Abstract
A sheet-type ohmic heating element (10) comprises a substrate sheet (12) having applied thereon a layer of PTC material (14) and a protective cover sheet (16) laid over the layer of PTC material. The protective cover sheet extends beyond the boundary of the layer of PTC material and is affixed to the substrate sheet circumferentially around the boundary of the layer of PTC material. The protective cover sheet and the layer of PTC material are arranged in non-adhesive contact with each other.
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