Circuit breaker mechanism

Details Circuit breaker mechanism Circuit breaker mechanism

1985-04-01

1986-10-21

Scott, J. R.

Electricity: circuit makers and breakers

Interlocking

Between plural switches

200153G, 335186, 335189, 335191, H01H 926, H01H 300

Patent

active

046187456

ABSTRACT:
An actuating mechanism for a circuit breaker includes a pair of contacts supported relative to a frame. One of the contacts is supported on a contact arm which is displaceable about a pivot to open and close the contacts. A releasable latch holds a rotatable cradle arm in latched position against the bias of an over-center spring connected between the contact arm and the cradle arm to bias the contact arm into over-center positions. An actuating link is coupled with the contact arm. When the cradle arm is held in the latched position, movement of the link from a first position to a second position displaces the contact arm pivot over center, causing the over-center spring to move the contact arm to close the contacts. An electrically actuated trip mechanism releases the latch under predetermined conditions to permit displacement of the cradle arm under the bias of the over-center spring from the latched position to an unlatched position causing the over-center spring to move the contact arm to open the contacts. A cradle arm return spring displaces the cradle arm from the unlatched position back to the latched position and causes the link to rotate from the second position back to the first position as the over-center spring holds the contacts open.

REFERENCES:
patent: 2370206 (1945-02-01), Taylor
patent: 2678359 (1954-05-01), Brumfield
patent: 2690486 (1954-09-01), Wilckens
patent: 2769049 (1956-10-01), Edmunds
patent: 2811607 (1957-10-01), Dorfman et al.
patent: 2824191 (1958-02-01), Christensen
patent: 2889428 (1959-06-01), Kingdon et al.
patent: 3098911 (1963-07-01), Schwartz et al.
patent: 3353127 (1967-11-01), Francis et al.
patent: 3593235 (1971-07-01), Nicol
patent: 3646487 (1972-02-01), Brackett, Sr.
patent: 3767871 (1973-10-01), Strobel
patent: 3774129 (1973-11-01), Sugiyama

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