Thermally responsive switch

Details Thermally responsive switch Thermally responsive switch

1998-11-06

1999-08-17

Picard, Leo P.

Electricity: electrothermally or thermally actuated switches

Thermally actuated switches

With bimetallic element

337 89, 337349, 337298, 337327, H01H 3774, H01H 6100, H01H 3704

Patent

active

059399708

ABSTRACT:
A thermally responsive switch includes a metal housing formed into the shape of a bottomed cylinder and having an open end, a header plate including a metal plate having a through hole and an electrically conductive lead terminal pin inserted through and airtightly fixed in the hole in an electrically insulated state, the header plate being airtightly fixed to the open end of the housing so that the housing and the header plate constitute a hermetic housing, a thermally responsive element formed into the shape of a shallow dish and having a generally central through hole, a fixed contact section provided on a portion of the lead terminal pin located in the hermetic housing, a movable plate support secured to the metal plate of the header plate located in the hermetic housing, a movable plate formed of a leaf spring-shaped conductive metal plate and having one end secured to the movable plate support, and a movable contact fixed to the other end side of the movable plate.

REFERENCES:
patent: 4317097 (1982-02-01), Hofsass
patent: 4319214 (1982-03-01), Giver
patent: 4517541 (1985-05-01), Ubukata et al.
patent: 4894634 (1990-01-01), Nezuka et al.
patent: 4914414 (1990-04-01), Ubukata et al.
patent: 5337036 (1994-08-01), Kuczynski
patent: 5428336 (1995-06-01), Smith et al.

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