Blanket wire utilizing positive temperature coefficient resistan

Details Blanket wire utilizing positive temperature coefficient resistan Blanket wire utilizing positive temperature coefficient resistan

1980-05-19

1981-06-02

Mayewsky, Volodymyr Y.

Electric heating

Heating devices

With heating unit structure

29611, 174106SC, 174107, 174120SC, 219504, 219528, 219548, 252511, 264174, 338 22R, 338214, H05B 354

Patent

active

042713501

ABSTRACT:
A heating element for use in an electric blanket or the like including conductors spaced apart in a positive temperature coefficient (PTC) material which serves as a self-limiting heater. The conductors are separated by a spacer which prevents the conductors from engaging each other when the PTC material softens or melts during annealing thereof. A coating of material having a higher melting point than the PTC material is placed over the PTC material to maintain its shape during the annealing process.

REFERENCES:
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patent: 3793716 (1974-02-01), Smith-Johannsen
patent: 3814899 (1974-06-01), Gordon et al.
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patent: 3914363 (1975-10-01), Bedard et al.
patent: 4008367 (1977-02-01), Sunderhauf
patent: 4055526 (1977-10-01), Kiyokawa et al.

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