Locks – Attack-actuated defeating mechanisms
Patent
1993-09-13
1994-03-29
Cuomo, Peter M.
Locks
Attack-actuated defeating mechanisms
70416, 292150, 29216914, 292DIG51, E05B 6300
Patent
active
052974049
ABSTRACT:
The present invention is an improvement on an inner cylinder lock and more specifically, on the bolt thereof. The bolt engages an opening in the rear case of the inner cylinder lock. The improvement on the bolt prevents the bolt from moving in a lateral direction and restricts the travel of the bolt in a direction transverse to the lateral direction. This is accomplished by providing two generally rectangular projecting members, each of which extends from opposite sides of the bolt. The projecting members fit into accommodating channels which are disposed within the opening in the rear case. The bolt also has a cavity located in its rear. The purpose of the cavity is to receive a spring biased locking pin. The spring biased locking pin is located in the posterior wall of the rear case. During normal operation, the bolt is limited in its travel by a pin engages the bolt. The projecting members prevent lateral movement of the bolt. And, if the portion of the lock anterior to the bolt is removed by force, and the pin pried out of its engagement with the bolt, the bolt will be biased towards and through the opening in the rear case and the locking pin in the posterior wall of the rear case will engage the cavity in the rear of the bolt, and thus prevent the bolt from being moved in a direction transverse to the lateral direction.
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patent: 4977768 (1990-12-01), Embry
Boucher Darnell M.
Cuomo Peter M.
HSL Marketing, Inc.
Litman Richard C.
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