Handle operating mechanism for circuit breakers

Details Handle operating mechanism for circuit breakers Handle operating mechanism for circuit breakers

1988-03-21

1989-05-30

Scott, J. R.

Electricity: circuit makers and breakers

Interlocking

Between plural switches

H01H 922

Patent

active

048353507

ABSTRACT:
A circuit breaker includes an operation knob rotatably mounted on a frame, an actuator rotatably mounted on the frame, the actuator being rotatably moved with the operation knob so as to operate a handle of the circuit breaker, an engagement member rotatably movable between first and second positions in response to the reciprocal movement of the actuator. The engagement member engages with an interlocking arm for the locking of the compartment door while it is being moved to the second position. The engagement member allows the interlocking arm to pass by when occupying the first position. An engagement portion is formed in the operation knob so as to engage with the engagement member when it occupies the second position. The location of the engagement portion corresponds to an OFF position of the operation knob where the circuit breaker is opened. Engagement of the engagement member with the engagement portion prevents the circuit breaker from being closed when the compartment door is opened.

REFERENCES:
patent: 2260073 (1941-10-01), Ellis
patent: 2263760 (1941-11-01), Currie
patent: 2806098 (1957-09-01), Portman et al.
patent: 2894084 (1959-07-01), Rexroad et al.
patent: 3009029 (1961-11-01), Bodenschatz et al.
patent: 3274353 (1966-09-01), Daly et al.
patent: 3324259 (1967-06-01), Chamberlin, Jr. et al.
patent: 3697714 (1972-10-01), Gryctoko et al.
patent: 3970808 (1976-07-01), Gryctko et al.

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