H - Electricity
01
H
H01H 61/02 (2006.01) H01H 37/14 (2006.01) H01H 37/52 (2006.01) H01H 37/54 (2006.01)
Patent
CA 2168620
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.
Emerson Electric Co.
Gowling Lafleur Henderson Llp
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