Locks – Operating mechanism – Key
Patent
1984-11-26
1986-04-01
Wolfe, Robert L.
Locks
Operating mechanism
Key
70407, 70409, E05B 2902
Patent
active
045789690
ABSTRACT:
A peripheral key for a tumbler lock, the key being transversely curved concentrically with the axis of the lock, and having an L-shaped groove to pass a sentry lug on a lock. The L-shaped groove has a longitudinal leg opening longitudinally at the free end of the lock, and a lateral leg communicating with the inboard end of the longitudinal leg and opening laterally to enable the sentry lug to pass along and out of the L-shaped groove to free the key for further operative movement. A tumbler lock having code discs and actuating discs, and a pusher plate having a lost-motion connection with a mounting plug to pick up the plug after predetermined movement of a curved peripheral key. A key as first described above, together with a lock having a sentry lug for accommodating insertion of the key into the lock. A lock and peripheral curved key wherein the key has concentric inner and outer surfaces engaging mating curved surfaces on a lock housing and central internal components to maintain the key in a longitudinal position while being used.
REFERENCES:
patent: 688070 (1901-12-01), Denn
patent: 1553639 (1925-09-01), Sherman
patent: 1915897 (1933-06-01), Maxwell
patent: 2578211 (1951-12-01), Spain
patent: 3334501 (1967-08-01), Greenwald
patent: 3821886 (1974-07-01), Ladewig
patent: 4407147 (1983-10-01), Larsen
Supra Products, Inc.
Wolfe Robert L.
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