Electricity: electrothermally or thermally actuated switches – Electrothermally actuated switches – With bimetallic elements
Patent
1997-07-14
1998-07-28
Picard, Leo P.
Electricity: electrothermally or thermally actuated switches
Electrothermally actuated switches
With bimetallic elements
337347, 337 68, H01H 7116
Patent
active
057867429
ABSTRACT:
A push button switch with override interruption structure, including a push button, a switch box, a front cover, a base, a support rod, an electric contact and an override interruption structure. The support rod is disposed under the bottom of the push button and the electric contact is fitted with the support rod, whereby by means of depressing the push button, the electric contact is moved downward to close a circuit. The override interruption structure includes a shaft seat disposed with an L-shaped resilient restricting cantilever having a projection. The override interruption structure further includes a power cutting member formed with a chamber at lower end facing the restricting cantilever. In the case of override, the bimetal blade is thermally deformed to act on the restricting cantilever, making the projection thereof disengaged from the chamber of the power cutting member, whereby the power cutting member is moved upward along with the push button by the restoring force into a power cut state.
REFERENCES:
patent: 4704594 (1987-11-01), Krasser
patent: 5262748 (1993-11-01), Tsung-Mou
Picard Leo P.
Vortman Anatoly
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