Handle blocking means for circuit breaker

Details Handle blocking means for circuit breaker Handle blocking means for circuit breaker

1979-12-17

1981-11-10

Shepperd, John W.

Electricity: circuit makers and breakers

Plural switches control single circuit

H01H 928

Patent

active

043000304

ABSTRACT:
A blocking attachment to limit movement of a circuit breaker operating handle consists of a single member constructed of material having the resilient properties of sheet steel. Outwardly extending tabs at opposite ends of the attachment are inwardly movable for mounting and dismounting the attachment with respect to a circuit breaker housing. An inverter L-shaped section of the attachment defines a freeway wherein the circuit breaker handle is movable from On to Trip positions and is readily viewable to determine when automatic tripping has taken place. Handle movement is limited to the freeway so that the circuit breaker may not be opened manually while the blocking attachment is operatively mounted to the circuit breaker.

REFERENCES:
patent: 2832857 (1958-04-01), Landmeier
patent: 2937248 (1960-05-01), Michetti
patent: 3055995 (1962-09-01), Snow
patent: 3327075 (1967-06-01), Phillipson
patent: 3376400 (1968-04-01), Batt et al.

Affiliated with

Also associated with

Rating

Handle blocking means for circuit breaker does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Handle blocking means for circuit breaker, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Handle blocking means for circuit breaker will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2363860