Protector for the plate-shaped heating element

Details Protector for the plate-shaped heating element Protector for the plate-shaped heating element

1975-03-21

1976-03-30

Miller, J. D.

Electric heating

Heating devices

With power supply and voltage or current regulation or...

219481, H05B 102

Patent

active

039476588

ABSTRACT:
A heating assembly having a protector for its sheet-type heating element, which is made from a sheet containing certain electroconductive fibrous or particulate materials such as carbon fibers. A detector element is formed on an intermediate resin layer having a negative temperature coefficient of resistivity, and two electrode layers are adhered to the opposite surfaces of the intermediate layer. The detector element is combined with or adhered to the sheet-type heating element, so that the whole surface of the heating element is completely covered thereby. A controlling circuit is connected between the detector element and the sheet type heating element.

REFERENCES:
patent: 1263181 (1918-04-01), Winger
patent: 3243753 (1966-03-01), Kohler
patent: 3251620 (1973-08-01), Yuasa
patent: 3571777 (1971-03-01), Tully
patent: 3793716 (1974-02-01), Smith-Johannsen

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