Electricity: magnetically operated switches – magnets – and electr – Electromagnetically actuated switches – Automatic circuit-interrupting devices
Patent
1980-10-17
1982-04-06
Broome, Harold
Electricity: magnetically operated switches, magnets, and electr
Electromagnetically actuated switches
Automatic circuit-interrupting devices
335188, 335174, 337 66, H01H 7510, H01H 500
Patent
active
043238688
ABSTRACT:
A circuit breaker comprising an electrically insulating housing, an overcurrent sensor in the housing, a stationary and a movable contact in the housing, and a latch mechanism coupled to the movable contact. The latch mechanism is tripped in response to a sensed overcurrent; an overcenter spring is coupled to the movable contact for opening and closing the contacts with a snap action when the latch mechanism is tripped. An elongated handle member extends through a handle opening in the housing and is movable axially between a contacts open position and a contacts closed position. Handle link means couples the handle member to the latch mechanism and translates a longitudinal movement of the handle member into a rotational movement of the handle link to urge the latch mechanism into the contacts closed position. The handle link means is also operable to retain the handle member in its second position upon manual movement of the handle member from its first to its second position and for permitting tripping of the latch mechanism and opening of the contacts independently of movement of the handle member. The handle member also has means associated therewith to inhibit rotational movement of the handle member while permitting longitudinal movement.
REFERENCES:
patent: 3706057 (1972-12-01), Ellenberger
patent: 3806848 (1974-04-01), Harper et al.
patent: 4117285 (1978-09-01), Harper
Broome Harold
North American Philips Controls Corp.
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