Locks – Special application – For closures
Patent
1998-04-16
1999-08-03
Barrett, Suzanne Dino
Locks
Special application
For closures
70 56, 292148, E05B 6506
Patent
active
059310324
ABSTRACT:
A lock comprising an elongated, parallelepiped housing with an internal sliding latch with a centrally located shackle pin that is selectively secured with a tumbler casing to immobilize the latch to secure a door. The housing comprises a base that is affixed to the door and a faceplate set-off from the base by an integral top and parallel bottom. The top, bottom, faceplate and base establish a channel in which the latch moves. The latch comprises a planar body with spaced apart ends. One end comprises a bolt that inserts into a conventional keeper secured to the facility wall. The other latch end comprises an outwardly protruding handle that facilitates user manipulation. A pair of spaced apart slots are defined proximate the latch ends to permit the mounting bolts to extend through the latch and an oval-shaped slot defined adjacent the latch center permits a shackle pin to extend therethrough. The shackle pin secures a removable tumbler casing that immobilizes the sliding latch. The tumbler casing comprises an oval periphery tightly received by a central faceplate groove and the latch slot so that blows upon the casing are transferred to the housing. The pin permits casing rotation thereabout. When the removable tumbler casing is selectively inserted into the faceplate groove and central latch slot, it receives the shackle pin to immobilize the latch. After the tumbler casing is removed, the user may slide the latch to remove the bolt from the keeper to release the door. An optional secondary authorization system may be used to permit a landlord or the like to regulate entry as well.
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