Circuit breaker having opening spring position indicator

Details Circuit breaker having opening spring position indicator Circuit breaker having opening spring position indicator

1977-08-23

1979-01-16

Hart, Ro E.

Electricity: circuit makers and breakers

Electric switch details

Indicators

200 67G, 200314, 200153G, H01H 900

Patent

active

041350723

ABSTRACT:
A circuit breaker having a stationary contact and a movable contact operable between open and closed positions with respect to the stationary contact. The circuit breaker includes means for moving the movable contact between the open and closed positions. These movement effecting means include an opening spring capable of being in two positions; a first position whenever the movable contact is in the open position, and a second position whenever the movable contact is in the closed position. An indicator rod is coupled to the opening spring and indicates the position of the opening spring.

REFERENCES:
patent: 2492009 (1949-12-01), Sandin
patent: 2769049 (1956-10-01), Edmunds
patent: 2830154 (1958-04-01), Herrmann
patent: 3549843 (1970-12-01), Wilson
patent: 3600538 (1971-08-01), Puzas
patent: 3621189 (1971-11-01), Link
patent: 3783215 (1974-01-01), Brumfield
patent: 3796845 (1974-03-01), Shirae
patent: 3935409 (1976-01-01), Koval
patent: 4001742 (1977-01-01), Jencks
patent: 4066990 (1978-01-01), Csutor

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