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US 8,250,887 B2Granted
Tamper resistant lock
AssigneeJ.J. MacKay Canada Limited
InventorsGeorge Allan MacKay, Michael Glenn Fievet
Life of this patent
Estimating the term…
Abstract
A tamper resistant lock is provided. The tamper resistant lock comprises a primary locking mechanism for locking and unlocking the tamper resistant lock with an appropriate key. A secondary locking mechanism is engaged and prevents unlocking when a sufficient force is applied to the tamper resistant lock. The force may be the result of driving a screwdriver into a keyway of the lock in an attempt to forcefully unlock the lock.
Claims15
A tamper resistant lock comprising:
- a primary locking mechanism having a longitudinal cylinder within a housing, the longitudinal cylinder rotatable within the housing, the longitudinal cylinder coupled to an actuator that is rotatable between a locked position and an unlocked position when an appropriate key is received within the longitudinal cylinder;
- a secondary locking mechanism to prevent rotation of the actuator when a tampering force parallel to a longitudinal axis of the longitudinal cylinder is applied to the primary locking mechanism, the secondary locking mechanism, when engaged, coupling the actuator to the housing of the primary locking mechanism.
Dependencies are inferred from the claim text.