Electricity: circuit makers and breakers – Interlocking – Between plural switches
Patent
1991-05-31
1993-03-23
Scott, J. R.
Electricity: circuit makers and breakers
Interlocking
Between plural switches
200330, H01H 922
Patent
active
051966581
ABSTRACT:
An electric operator having a reciprocally mounted actuator is adapted to be mechanically coupled to an operating handle from a molded case circuit breaker or a molded case switch for moving the operating handle between an open position or, alternatively, to a closed position. The electric operator includes an electric motor for driving the actuator and allowing the circuit breaker to be controlled from a remote location and a mechanical crank assembly which alternatively allows for manual operation of the actuator in the event of a loss of electric power to the electric motor.
REFERENCES:
patent: 4002865 (1977-01-01), Kuhn et al.
patent: 4553115 (1985-11-01), Grunert et al.
patent: 4642726 (1987-02-01), Matsko et al.
patent: 4804809 (1989-02-01), Thompson, Jr. et al.
patent: 4951020 (1990-08-01), Changle et al.
patent: 4990873 (1991-02-01), Grunert et al.
Underwriter's Laboratory Standard UL 489, pp. 74-75, Sep. 15, 1976.
Moran M. J.
Scott J. R.
Westinghouse Electric Corp.
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