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Lock actuator
A cylinder lock actuator comprising a first lock cylinder, a second lock cylinder, a cam comprising an axial bore and a clutch mechanism (13, including part 15), the clutch mechanism selectively engaging either lock cylinder with the cam, wherein a torsion ring 14 is located within the axial bore of the cam and in a first state transmits torque from the clutch mechanism to the cam and in a second state can rotate freely within the axial bore of the cam without transmitting torque from the clutch mechanism to the cam. The torsion ring may be held within the cam in the second state by a lip on the edge of the cam. A spring, for example a cone spring, may bias the torsion ring into the second state. In use, when the lock is attacked and a lock cylinder is removed, the spring pushes the torsion ring into the second state which means it does not transmit torque to the cam and as it rotates freely cannot be manipulated to rotate the cam and unlock the lock.
Lock actuator
A cylinder lock actuator comprising a first lock cylinder, a second lock cylinder, a cam comprising an axial bore and a clutch mechanism (13, including part 15), the clutch mechanism selectively engaging either lock cylinder with the cam, wherein a torsion ring 14 is located within the axial bore of the cam and in a first state transmits torque from the clutch mechanism to the cam and in a second state can rotate freely within the axial bore of the cam without transmitting torque from the clutch mechanism to the cam. The torsion ring may be held within the cam in the second state by a lip on the edge of the cam. A spring, for example a cone spring, may bias the torsion ring into the second state. In use, when the lock is attacked and a lock cylinder is removed, the spring pushes the torsion ring into the second state which means it does not transmit torque to the cam and as it rotates freely cannot be manipulated to rotate the cam and unlock the lock.
Lock actuator
JOHN MCLOUGHLIN (author) / DAVID JENNINGS (author)
2022-05-18
Patent
Electronic Resource
English
IPC:
E05B
LOCKS
,
Schlösser