Pin tumbler lock cylinder

Details Pin tumbler lock cylinder Pin tumbler lock cylinder

E - Fixed Constructions

05

B

70/55

E05B 27/04 (2006.01)

Patent

CA 1065152

ABSTRACT OF THE DISCLOSURE A cylinder lock comprising a plug, with an eccentric face, a cylinder and an eccentric sleeve between the plug and cylin- der. When a proper key is inserted and raises the pins to operating shear level the plug and sleeve can be turned as a unit on an axis to unlock or lock, but in the event there is a single pin restraining the rotary motion of the sleeve, only a limited plug motion is permitted as it is now in an eccentric relation with respect to the cylinder. Picking of the lock is prevented by dividing the sleeve into segments rotatable with respect to each other and providing each with circumferentially extending recesses in which tumbler pins can become ledged.

287108

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