Electric heating – Heating devices – With heating unit structure
Patent
1982-03-01
1984-03-13
Mayewsky, Volodymyr Y.
Electric heating
Heating devices
With heating unit structure
174 47, 15624412, 156169, 1562751, 219528, 219535, 219541, 285 21, H05B 344
Patent
active
044369883
ABSTRACT:
A bifilar resistance element for use in preparing heating elements used in thermal bonding and the like, wherein two electrically conducting wires are embedded in a thermoplastic sheath which is fusible when sufficient current is passed through the bifilar resistance element. A heating element is prepared by joining the pair of wires in a length of the bifilar resistance element together at one end to form an electrically conductive path and then winding the length into a spiral shape. Two articles of thermoplastic material may be bonded together by placing the heating element in a recess simultaneously adjacent both articles with a pair of leads to the heating element extending externally from the two articles to be bonded, and applying an electrical current so that the thermoplastic sheath and a portion of the adjacent articles themselves are fused, to bond the articles together upon cooling.
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Mayewsky Volodymyr Y.
R & G Sloane Mfg. Co., Inc.
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