Locks – Special application – For closures
Patent
1979-12-28
1982-06-22
Lyddane, William E.
Locks
Special application
For closures
70218, 70472, 70489, 292173, 292DIG27, 292DIG31, E05B 5506, E05C 112
Patent
active
043355951
ABSTRACT:
A door lock has a flush-mountable body. A forwardly facing recess is defined by the body. A paddle-type handle is pivotally carried by the body and is movable between a nested position within the body recess and an operating position. A spring-projected slide bolt is carried on the back of the body and is movable between projected and retracted positions. A key-controlled disconnect linkage is provided for selectively connecting and disconnecting the handle and the bolt. The disconnect linkage includes a disconnect member which extends longitudinally along one side of the bolt and which has an end region that is shifted from side to side between connecting and disconnecting positions by a key-operated locking member. When the disconnect linkage drivingly connects the handle and the bolt, movement of the handle from its nested position to an operating position will cause corresponding retracting movement of the bolt. When the disconnect linkage disconnects the handle from the bolt, movement of the handle is inoperative to cause retracting movement of the bolt. A feature of the disconnect linkage is that it provides the lock with a "slam" capability, meaning that when the bolt is projected, it can be slammed into latching engagement with a suitably configured strike regardless of whether the disconnect linkage is drivingly connecting or disconnecting the handle and the bolt.
REFERENCES:
patent: 95507 (1869-10-01), Petre
patent: 2453505 (1948-11-01), Fornwald
patent: 3782141 (1974-01-01), Doerrfeld
patent: 4116027 (1978-09-01), Tannery
patent: 4138869 (1979-02-01), Pelcin
patent: 4170119 (1979-10-01), Kalis, Jr.
Dignan Donald J.
Pastva, Jr. John V.
Swan Jye P.
Lyddane William E.
The Eastern Company
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