Circuit breaker

Details Circuit breaker Circuit breaker

2007-03-02

2009-06-02

Donovan, Lincoln (Department: 2832)

Electricity: magnetically operated switches, magnets, and electr

Electromagnetically actuated switches

With arc-suppression or extinguishing means

Reexamination Certificate

active

07541901

ABSTRACT:
A circuit breaker for a double-break mechanism includes a current interrupting section having a contact mechanism. The contact mechanism includes first and second fixed contactors arranged in parallel and having fixed contacts, and a bridging movable contactor having an arm with movable contacts opposing the fixed contacts. A magnetic plate may be interposed in a middle region between two pairs of the fixed and movable contacts extending along a path of switching movement of the movable contactor. Partition walls formed of organic polymer material may be provided to stand along the path of the movable contactor. The partition walls sandwich each pair of the fixed contact and the movable contact to form a narrow gap arc extinguishing space between the partition walls.

REFERENCES:
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patent: 4521653 (1985-06-01), Yoshiyasu et al.
patent: 4743720 (1988-05-01), Takeuchi et al.
patent: 4778958 (1988-10-01), Mayer et al.
patent: 5223681 (1993-06-01), Buehler et al.
patent: 6075429 (2000-06-01), Uotome et al.
patent: 6222147 (2001-04-01), Doughty et al.
patent: 6242707 (2001-06-01), Mody et al.
patent: 6373016 (2002-04-01), Brouillat et al.

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