E - Fixed Constructions – 05 – B
Patent
E - Fixed Constructions
05
B
E05B 47/00 (2006.01) E05B 45/08 (2006.01)
Patent
CA 2052603
A lock monitor is provided for fitting to lockable objects that have locks that incorporate a bolt mechanism including a slidable bolt having an engaging face at the free end thereof and a mortise. The opening of the mortise is larger in at least one dimension than the engaging face of the slidable bolt. The lock monitor comprises an electrically operated status indicator, an actuating arm attachable to the engaging face of the slidable bolt, where the actuating arm extends generally perpendicular to the direction of movement of the slidable bolt, a contact plate attachable to the bolt mechanism adjacent to the engaging face of the slidable bolt, and first and second circuit contacts located on the contact plate. The first and second circuit contacts are connected in a circuit monitored by the status indicator, with the first and second circuit contacts being separated and insulated from each other such that the circuit remains open until the separation between the first and second circuit contacts is bridged by engagement with the actuating arm when the slidable bolt is disengaged from the mortise. When the actuating arm engages the contact means it causes the status indicator to register a change in status in the lock.
Bereskin & Parr
Mandor Research & Marketing Services Limited
LandOfFree
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