Circuit breaker apparatus

Details Circuit breaker apparatus Circuit breaker apparatus

1974-04-10

1976-02-03

Harris, G.

Electricity: electrothermally or thermally actuated switches

Electrothermally actuated switches

With bimetallic elements

337349, H01H 6104

Patent

active

039367924

ABSTRACT:
A circuit breaker device which is particularly useful with direct current such as in an automotive application comprises a main creep-acting thermostatic strip member mounted on a second auxiliary U-shaped thermostatic member, the U-shaped member being attached to the strip with the high and low expansion layers being dissimilar or reversed in order to obtain increased contact force prior to actuation and faster contact opening and in effect, greater differential after actuation. One leg of the U-shaped thermostatic member is mounted on a base plate, the other leg cantilever mounts the thermostatic strip. A contact is located on the free distal end of the thermostatic strip and is adapted to move into and out of engagement with a stationary contact supported on the base plate but electrically insulated therefrom. A special insulator pad mounts the stationary contact and is received on and locked in place on the base plate.

REFERENCES:
patent: 2440937 (1948-05-01), Emigh
patent: 2597759 (1952-05-01), Starkey
patent: 3033958 (1962-05-01), Wells et al.
patent: 3577111 (1971-05-01), Nardulli
patent: 3609618 (1971-09-01), Wells
patent: 3609620 (1971-09-01), Lee

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