Thermostatic switch with insulated calibration dimple

Details Thermostatic switch with insulated calibration dimple Thermostatic switch with insulated calibration dimple

1989-12-04

1991-05-07

Broome, Harold

Electricity: electrothermally or thermally actuated switches

Thermally actuated switches

With bimetallic element

337 94, 337112, 337372, H01H 3712, H01H 3754, H01H 3704

Patent

active

050140345

ABSTRACT:
A snap-action thermostatic switch, having a bimetallic member with a snap-action formed section bearing against a calibration dimple, has an insulative coating provided on the calibration dimple to prevent current flow through the dimple which could disrupt switch operation or cause damage to the bimetallic member.

REFERENCES:
patent: 3223809 (1965-12-01), Wehl
patent: 3577111 (1971-05-01), Nardulli
patent: 4335368 (1982-06-01), Givler
patent: 4445105 (1984-04-01), Wehl
patent: 4492946 (1985-01-01), Loescher
patent: 4539545 (1985-09-01), Klotz
patent: 4551702 (1985-11-01), Hire
patent: 4620175 (1986-10-01), Karr et al.

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