Lock-off switch

Details Lock-off switch Lock-off switch

1978-09-19

1980-08-26

Stearns, Richard R.

Electricity: circuit makers and breakers

Liquid contact

Time delay

200321, H01H 320, H01H 1308

Patent

active

042197147

ABSTRACT:
A lock-off switch comprises a switch case, a trigger-like slider and a lock plate rockably attached to the slider and engageable therewith in a locking position so as to prevent a pulling of the trigger-like slider. A release shaft slidably penetrates into the switch case through one side thereof and is coupled to the lock plate by a coupler member. The release shaft is normally urged by a compression coil spring in such a way as to hold the lock plate in engagement with the trigger-like slider in the locked position. When the release shaft is pushed against the urging force of the compression coil spring, the coupler member moves to rock the lock plate out of the engagement with the trigger-like slider, whereby the trigger-like slider can be pulled.

REFERENCES:
patent: 3746815 (1973-07-01), Drummer
patent: 3953696 (1976-04-01), Reimann et al.
patent: 3971906 (1976-07-01), Sahrbacker

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