Electricity: circuit makers and breakers – Electric switch details – Latches
Patent
1978-11-09
1979-12-25
Marcus, Stephen
Electricity: circuit makers and breakers
Electric switch details
Latches
74531, 200157, 200322, 200325, 200328, H01H 320, H01H 1308
Patent
active
041807162
ABSTRACT:
A lock-off switch comprises a lock plate rotatably disposed on a slider and having a projection at one side and a hole elongated in the lengthwise direction and a pin secured to the slider and loosely fitted in the elongated hole of the lock plate thereby to hold the lock plate rotatably. In the elongated hole of the lock plate a compression spring stretches between the pin and one end of the elongated hole, thus urging the lock plate toward a switch case. The slider has a stopper engageable with the projection of the lock plate thereby to stop the slider. An urging means, such as a compression spring, is provided at the other side of the slider and urging the projection of the lock plate into engagement with the stopper, thereby to prevent the slider from being pushed. To push the slider, the lock plate is rotated against the urging force of the urging means thereby to release the projection of the lock plate from the stopper.
REFERENCES:
patent: 3383943 (1968-05-01), Piber
patent: 3550472 (1970-12-01), Drummer
patent: 3590193 (1971-06-01), Frenzel
patent: 3646291 (1972-02-01), Bienwald et al.
patent: 3746813 (1973-07-01), Brown
patent: 3755640 (1973-08-01), Kaman et al.
patent: 3953696 (1976-04-01), Reismann et al.
patent: 3971906 (1976-07-01), Sahrbacker
Fujisoku Electric Co. Ltd.
Marcus Stephen
LandOfFree
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