Electric switchgear with a pull-out frame and a switching device

Details Electric switchgear with a pull-out frame and a switching device Electric switchgear with a pull-out frame and a switching device

1986-12-19

1987-10-27

Envall, Jr., Roy N.

Electricity: circuit makers and breakers

Interlocking

Between plural switches

361337, H01H 920

Patent

active

047031379

ABSTRACT:
A pull-out frame for a switching device with a threaded spindle and a tripping device which can be actuated by a tool provided for actuating the threaded spindle. In the switching device, a coupling member is arranged which transmits the motion of the tripping device of the pull-out frame to a tripping device of the switching meachanism of the switching device. A latching device controlled by the positioning drive makes provision that the tripping device is released only in the course of the travel motion of the switching device for resetting.

REFERENCES:
patent: 2678976 (1954-05-01), Caswell
patent: 2914635 (1959-11-01), Lester et al.
patent: 3301984 (1967-01-01), Wilson
patent: 3560676 (1971-02-01), Battaglia
patent: 3783209 (1974-01-01), Cleaveland et al.
patent: 4002865 (1977-01-01), Kuhn et al.
patent: 4112269 (1978-09-01), Nelson et al.

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