Self-regulating heating element

Details Self-regulating heating element Self-regulating heating element

1988-03-01

1989-05-30

Walberg, Teresa J.

Electric heating

Heating devices

With heating unit structure

219541, 219504, H05B 314

Patent

active

048353701

ABSTRACT:
A self-regulating heating element having a resistor with a positive temperature coefficient as a heat source, the resistor(s) being located within a thermoplastic casing between metal parts which it (they) contact(s) in a heat-exchanging manner. For safety the element is provided with a double insulation: one part which is manufactured by moulding and which is, secondly, provided internally and/or externally with a layer of an elastomer by means of a solution.

REFERENCES:
patent: 3233028 (1966-02-01), Toppari et al.
patent: 4086467 (1978-04-01), Grant
patent: 4104509 (1978-08-01), Van Bokestal et al.
patent: 4147927 (1979-04-01), Pirotte
patent: 4330929 (1982-05-01), Cripe
Electronic Design 3, Feb. 1, 1968, pp. 50-59, 62-67, 70-79.
Electrical Commnication, "Plastic Encapsulation of Components", Whitby et al., vol. 43, No. 3, 1968, pp. 220-226.

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