Electricity: magnetically operated switches – magnets – and electr – Electromagnetically actuated switches – Automatic circuit-interrupting devices
Patent
1990-11-30
1992-03-10
Picard, Leo P.
Electricity: magnetically operated switches, magnets, and electr
Electromagnetically actuated switches
Automatic circuit-interrupting devices
335 20, H01H 7312
Patent
active
050952935
ABSTRACT:
A visually inspectable indicator for a circuit breaker interrupter apparatus is provided. The visual indicator is located on a portion of the contact wipe assembly of an operating rod assembly of a circuit breaker to provide a reading of relative movement between components of the contact wipe assembly. This reading is related to integrity of the contacts. In a preferred embodiment, the indicator is a T-shaped cut out which is positioned and dimensioned such that it provides a reading relating to compression of the contact spring of the operating rod assembly when the assembly and the circuit breaker contacts are in the closed position which, in turn, provides an indication of the condition of the contacts.
REFERENCES:
patent: 4554524 (1985-11-01), Radus
patent: 4743876 (1988-05-01), Milianowicz et al.
patent: 4975673 (1990-12-01), Ikehata et al.
Gress, Jr. Daniel D.
Klimek Edward J.
Patel Nagar J.
Donovan Lincoln
Moran M. J.
Picard Leo P.
Westinghouse Electric Corp.
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