Switchable circuit breaker

Details Switchable circuit breaker Switchable circuit breaker

1994-04-28

1998-04-21

Picard, Leo P.

Electricity: electrothermally or thermally actuated switches

Electrothermally actuated switches

With bimetallic elements

337 37, 337 53, 337 56, 337 91, H01H 7116

Patent

active

057422192

ABSTRACT:
A switchable circuit breaker having a housing, stationary and moveable contacts, a switching member for actuating the contacts to assume a first condition in which the contacts are open and a second condition in which the contacts are closed, and a breaker is disposed within the housing to interrupt current flow through the contacts in response to the current flow exceeding a predetermined level. The switching member includes a pusher moveable between an advanced position in which the pusher acts on the contacts to assume a contact opening condition and a retracted position in which the pusher releases the contacts to assume a contact closing position. The pusher is guided within the housing so as to convert a linear motion of its drive end into a steplike motion of its active end in order to provide a snapping transition between the closing and opening conditions of the contacts, thus assuring "non-teaseability" in the switching operation.

REFERENCES:
patent: 2318076 (1943-05-01), Johns
patent: 2783330 (1957-02-01), Casey
patent: 2856487 (1958-10-01), Mang
patent: 3846729 (1974-11-01), Sorimachi
patent: 4123737 (1978-10-01), Hoagland
patent: 4363016 (1982-12-01), Unger
patent: 4510479 (1985-04-01), Merchant
patent: 4518943 (1985-05-01), Giessner
patent: 4833439 (1989-05-01), Bowden
patent: 4868535 (1989-09-01), Janniere
patent: 5248954 (1993-09-01), Chiang

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