Locks – Special application – For closures
Patent
1977-12-05
1981-04-21
Wolfe, Robert L.
Locks
Special application
For closures
292144, 292333, E05B 5500
Patent
active
042625041
ABSTRACT:
Disclosed is a locking device for locking a door and the like, suitable for use in an electric locking system. The device has a dead bolt which is held in a retracted position within a housing when the door is open, and an actuating member adapted to be partially projected out of the housing when the door is open. The actuating member is slidably mounted in the housing and has an inclined surface acting as a cam surface for engagement with the end surface of the door. The actuating member is so inter-related with the dead bolt that the latter is driven into a corresponding hole in the door jam as the slidable member is depressed by the door, in the course of closing of the door. An electromagnetic plunger is provided for allowing the retraction of the dead bolt in accordance with a predetermined specific electric signal. A manually operative member is associated with the electromagnetic plunger to allow a manual unlocking if necessary.
REFERENCES:
patent: 1299195 (1919-04-01), Kohn
patent: 3353383 (1967-11-01), Fish
patent: 3621686 (1971-11-01), Klein
patent: 4099752 (1978-07-01), Geringer
patent: 4132439 (1979-01-01), Miller
Alps Electric Co. ,Ltd.
Dunne Gerard F.
Shoup Guy W.
Wolfe Robert L.
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