Flame-resistant heating body and method for making same

Details Flame-resistant heating body and method for making same Flame-resistant heating body and method for making same

1995-03-02

1997-10-21

Walberg, Teresa J.

Electric heating

Heating devices

With heating unit structure

219545, 219482, 252601, H05B 316, H05B 334, C09K 2100, B23K 1308

Patent

active

056792778

ABSTRACT:
A heating body includes a layered structure consisting of a resistive body and a control body, with a meltable insulating sheet therebetween. The control body contains wires which are brought into electrical contact with the resistive body if the temperature of the resistive body exceeds the melting temperature of the insulating sheet. Current flow between the resistive body and the control body is detected to trigger a power cutoff to the resistive body. The material of the insulating sheet is selected to have a melting point well below an ignition temperature of the materials in the heating body, thereby triggering power cutoff at temperatures low enough to prevent fire. A control system normally controls the temperature of the heating body between an upper and a lower limit.

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Fisher, L.E., The Weavers, Franklin Watts Inc., New York, pp. 30-43.

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