Contactor assembly for circuit breaker

Details Contactor assembly for circuit breaker Contactor assembly for circuit breaker

2006-12-12

2006-12-12

Donovan, Lincoln (Department: 2832)

Electricity: magnetically operated switches, magnets, and electr

Electromagnetically actuated switches

Automatic circuit-interrupting devices

C335S195000, C218S022000

Reexamination Certificate

active

07148775

ABSTRACT:
A contactor assembly for a circuit breaker is disclosed. There is provided a contactor assembly, wherein stationary pins fixed to a rotary shaft and supporting one ends of springs and limit pins contacting the upper surface of the movable contactor and supporting the other ends of the springs are connected by link plates, comprising a movable contactor provided on the upper surface of the movable contactor with groove surfaces having a constant first curvature radius and curve surfaces having a constant second curvature radius larger than the first curvature radius. By this, a contact pressure provided by the springs is constant, and a separating position can be maintained when separating the contactor by an electromagnetic repulsive force.

REFERENCES:
patent: 5310971 (1994-05-01), Vial et al.
patent: 6403909 (2002-06-01), Green et al.
patent: 6429759 (2002-08-01), Schlitz et al.
patent: 6639168 (2003-10-01), Castonguay et al.
patent: 7005594 (2006-02-01), Kim
patent: 2005/0231308 (2005-10-01), Kim
U.S. Appl. No. 11/239,049, to Kim, filed Sep. 30, 2005.

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