Closure fasteners – Bolts – Sliding
Patent
1977-01-27
1978-07-11
Dorner, Kenneth J.
Closure fasteners
Bolts
Sliding
70279, 292181, E05C 106
Patent
active
040997529
ABSTRACT:
An electric lock of a configuration to facilitate its mounting in the limited space of a conventional door structure or door frame structure, in which an actuating solenoid for the bolt is mounted so that its plunger will have an axis of movement in right-angled relation to the axis of movement of the lock bolt. In one embodiment, the lock includes a detent switch operable upon door closure to energize the solenoid for actuation of the bolt to a locking position. In another embodiment, the lock has an associated deadlock which operates automatically to lock the bolt in locking position, and is operable to a non-deadlocking position in response to energization of an associated solenoid. In still another embodiment of the lock, the bolt is normally spring-urged to a locking position, and the bolt actuating solenoid must be energized to maintain the bolt in a retracted non-locking position. Also, in a modified structure provision is made for manually actuating the solenoid operable deadlock to release position.
REFERENCES:
patent: 944896 (1909-12-01), Moore
patent: 2437777 (1948-03-01), Zajc
patent: 2786701 (1957-03-01), Povlich
patent: 3751088 (1973-08-01), Schlage et al.
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