Tumbler lock having peripheral key

Details Tumbler lock having peripheral key Tumbler lock having peripheral key

E - Fixed Constructions

05

B

70/54, 70/57

E05B 29/02 (2006.01) E05B 21/06 (2006.01)

Patent

CA 1251341

TUMBLER LOCK HAVING PERIPHERAL KEY 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.

469621

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