Cradle for contact operating means

Details Cradle for contact operating means Cradle for contact operating means

1976-07-06

1977-11-01

Broome, Harold

Electricity: magnetically operated switches, magnets, and electr

Electromagnetically actuated switches

Automatic circuit-interrupting devices

335 21, 335 26, 335191, H01H 7500, H01H 7700

Patent

active

040567974

ABSTRACT:
A single pole molded case circuit breaker is constructed with an internal metal frame to which the contact operating mechanism is mounted. This mechanism includes a releaseable cradle which when latched permits the circuit breaker contacts to be closed. The cradle is a single element having spaced parallel walls, a latching extension on one of these walls and a kicker on the other wall. When the cradle is released or tripped the kicker is engageable with a toggle interposed between the contacts and the cradle for collapsing the toggle to assure contact opening. Integral formation on the walls provide a pivotal mounting for the toggle. A reset pin is loosely mounted between the parallel walls for low friction resetting of cradle.

REFERENCES:
patent: 3477044 (1969-11-01), Gryctko
patent: 3774129 (1973-11-01), Sugiyama
patent: 3849748 (1974-11-01), Orriss
patent: 3970976 (1976-07-01), Nicol

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