Electric switch and thermal protector

Details Electric switch and thermal protector Electric switch and thermal protector

1996-06-14

1999-11-09

Picard, Leo P.

Electricity: electrothermally or thermally actuated switches

Thermally actuated switches

With bimetallic element

337333, 337362, 337365, 200553, H01H 3704, H01H 3752

Patent

active

059822694

ABSTRACT:
A switch with a cantilevered leaf spring as the movable bi-metal contact lever can be switched "ON" or "OFF" by a rocker pivoted in the housing. No lost motion plunger is required and no centor terminal is provided in the housing bottom wall. The contact lever also has a temperature sensitive shape so it will bend upwardly toward the rocker to open the switch contacts in response to an overcurrent condition. The rocker is returned to "OFF" by such a shape change in the bi-metal contact lever.

REFERENCES:
patent: 3311725 (1967-03-01), Butler et al.
patent: 3919679 (1975-11-01), Kingma
patent: 4258349 (1981-03-01), Flory
patent: 4363016 (1982-12-01), Unger
patent: 4628295 (1986-12-01), Yasuda et al.
patent: 4791397 (1988-12-01), Wells
patent: 4931762 (1990-06-01), Fierro
patent: 4937548 (1990-06-01), Sdunek
patent: 5089799 (1992-02-01), Sorenson
patent: 5264817 (1993-11-01), Sorenson

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