Snap-acting thermostatic switch assembly

Details Snap-acting thermostatic switch assembly Snap-acting thermostatic switch assembly

1984-05-29

1985-11-26

Broome, Harold

Electricity: electrothermally or thermally actuated switches

Electrothermally actuated switches

With bimetallic elements

337 94, H01H 6101, H01H 7116

Patent

active

045556865

ABSTRACT:
A snap-acting thermostatic electric switch in which a snap-acting thermostatic disc is physically attached to a heater plate which in turn mounts movable contacts. A stepped rivet loosely mounts the disc and is headed over to tightly mount any one of a series of heater plates having different thicknesses. The heater plate is shaped to allow unimpeded snap motion of the disc yet provide improved heat conduction to the disc. The disc and plate are mounted on a spider support which is adjustably positioned within the switch compartment by means of a combination rivet and screw received in a threaded bore of the base of the switch. An insulator is loosely received on the base and is biased thereagainst by a spring which also biases the spider upwardly to provide positional stability. Another spring is placed between the spider and the heater plate to optimize contact opening.

REFERENCES:
patent: 3452313 (1969-06-01), Perry
patent: 4231010 (1980-10-01), Cardin

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