Thermostat with thermal insulator for protection against overhea

Details Thermostat with thermal insulator for protection against overhea Thermostat with thermal insulator for protection against overhea

1995-06-13

1996-11-19

Picard, Leo P.

Electricity: electrothermally or thermally actuated switches

Thermally actuated switches

With bimetallic element

337107, 337354, H01H 3752, H01H 6102

Patent

active

055766838

ABSTRACT:
An electrical resistance heater is positioned adjacent to a bimetal disc in a thermostat for depressing the temperatures at which the disc snaps between oppositely bowed positions to open and close a switch. A thermal insulator interposed between the heater and the thermostat housing protects the housing against overheating and properly locates the heater relative to the disc. A dielectric film on the surface of the disc that faces toward the heater insures adequate electrical spacing between the heater and disc.

REFERENCES:
patent: 4533894 (1985-08-01), Bishop et al.
patent: 4646051 (1987-02-01), Ruszczyk et al.

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