Circuit breaker including rotary interlock for secondary cover

Electricity: magnetically operated switches – magnets – and electr – Electromagnetically actuated switches – Latching means

Reexamination Certificate

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Details

C335S172000, C335S202000

Reexamination Certificate

active

07012493

ABSTRACT:
A circuit breaker includes a housing including a primary cover and a secondary cover having a tab; separable contacts; and an operating mechanism adapted to open and close the separable contacts. The operating mechanism includes a cradle pivotally mounted within the housing, the cradle including a latch, and a latch mechanism within the housing. The latch mechanism is adapted to capture the latch of the cradle when the separable contacts are closed. The operating mechanism also includes a rotary interlock pivotally mounted within the housing and cooperating with the latch mechanism and the tab of the secondary cover to release the latch of the cradle and to trip open the separable contacts when the secondary cover is removed from the primary cover.

REFERENCES:
patent: 4000478 (1976-12-01), Jencks et al.
patent: 4523164 (1985-06-01), Aoyama et al.
patent: 6052047 (2000-04-01), Malingowski et al.
patent: 6140897 (2000-10-01), Mueller et al.
patent: 6188302 (2001-02-01), Conway
patent: 6208229 (2001-03-01), Zindler et al.
patent: 6232855 (2001-05-01), Malingowski et al.
patent: 6275126 (2001-08-01), Martelli et al.
patent: 6281771 (2001-08-01), Turner et al.
patent: 6747534 (2004-06-01), Mueller et al.

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