H - Electricity – 05 – B
Patent
H - Electricity
05
B
309/102, 26/123
H05B 3/08 (2006.01)
Patent
CA 1088607
ABSTRACT OF THE DISCLOSURE An electric heating element and a method of constructing such an element utilizing a moisture- impermeable insulating barrier to minimize the leakage current between a cold pin terminal connector and the hollow outer tubing surrounding an electric resistance heating wire. The cold pin has a protuberance formed thereon intermediate the ends. A moisture-impermeable, electrically insulating layer is provided on the cold pin element from the end seal means inwardly toward the junction of the cold pin and the resistance heating element, to form an insulation barrier for leakage current between the cold pin element and the hollow, outer tubing in the region adjacent the end seal means. The seal means includes a bushing defining an aperture through which the cold pin passes, with the bushing abutting the protuberance at the outer end of the aperture. The bushing also has a radially outwardly directed flange, a portion of the bushing being positioned within the hollow outer tubing and the flange engaging the end of the tubing to form a seal.
274932
Electro-Therm Inc.
Macrae & Co.
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