Locks – Operating mechanism – Combination
Patent
1981-04-23
1983-05-17
Wolfe, Robert L.
Locks
Operating mechanism
Combination
70431, 70442, E05B 1700, E05B 3702
Patent
active
043834256
ABSTRACT:
Safety devices are provided for use with combination locks of the type which permit the combination of the lock to be changed from the faceplate of the lock by manipulation of the same actuator which is employed for opening the lock. The safety devices include removable elements insertable into the lock and engageable with the actuator for preventing movement of the actuator to a combination-changing position, while permitting normal movement of the actuator required to open the lock.
REFERENCES:
patent: 3416338 (1968-12-01), Gehrie
patent: 3785685 (1974-01-01), MacDonald
patent: 3997205 (1976-12-01), MacDonald
patent: 4123923 (1978-11-01), Bako
Presto Lock, Inc.
Wolfe Robert L.
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