Electricity: magnetically operated switches – magnets – and electr – Electromagnetically actuated switches – Automatic circuit-interrupting devices
Patent
1991-11-06
1993-02-23
Donovan, Lincoln
Electricity: magnetically operated switches, magnets, and electr
Electromagnetically actuated switches
Automatic circuit-interrupting devices
335195, 200147R, H01H 7500
Patent
active
051893843
ABSTRACT:
A power circuit breaker having movable and relatively stationary contact assemblies operable between open and closed positions. The contact assemblies respectively include pivotally mounted first and second conductive members. The first and second conductive members are disposed in spaced relation in the closed position of the circuit breaker, to provide a first current loop having first and second legs defined by said first and second conductive members. A pivotable mounting arrangement for the second conductive member provides a second current loop defined by the second leg portion of the first loop and a third leg portion. The magnetic forces in the first current loop, which tend to pivot the second leg portion towards the third leg portion, are opposed by magnetic forces in the second current loop. Compression spacers provide parallel current paths which reduce the magnitude of current flowing through a pivotable joint of the relatively stationary contact assembly.
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Pp. 38-45 and 74-77 of I. B. 33-790-1F, Oct. 1983 entitled "Instructions for Low-Voltage Power Circuit Breakers Types DS and DSL" Published by Westinghouse Electric Corporation.
Donatelli Alexander V.
Long Russell W.
Milianowicz Stanislaw A.
Donovan Lincoln
Moran M. J.
Westinghouse Electric Corp.
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