Electricity: circuit makers and breakers – Toggle mechanisms
Patent
1992-11-16
1994-03-22
Recla, Henry J.
Electricity: circuit makers and breakers
Toggle mechanisms
200DIG42, 335172, H01H 2300
Patent
active
052966640
ABSTRACT:
A positive off mechanism for a circuit breaker includes a pair of positive off levers slideable in slots in the side plates and extendable into the path of the operating handle to prevent movement of the handle to the off position when the contacts are welded closed. The positive off levers are actuated by positive off links pivotally mounted to the side plates and coupled to the positive off levers by "dog bone" connections. The positive off links in turn are actuated by the toggle mechanism of the circuit breaker which collapses to open the contacts during normal circuit breaker operation, but which remains erect when the contacts are welded closed.
REFERENCES:
patent: 5213206 (1993-05-01), Beck et al.
Castelein Steven
Crookston Ronald W.
Marks Douglas C.
Turner David C.
White, III Richard E.
Moran M. J.
Recla Henry J.
Walczak David J.
Westinghouse Electric Corp.
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