Locks – Operating mechanism – Key
Patent
1997-12-04
1999-03-23
Gall, Lloyd A.
Locks
Operating mechanism
Key
70373, 70374, 70379R, 70417, 70449, 70451, 70461, E05B 906
Patent
active
058845127
ABSTRACT:
A multi-use lock housing and cylinder includes a cylinder of a size and shape such as that typically used in key-in-knob locks. A two-part housing includes an outer housing portion and an inner housing portion, each having a bore and a slot into which the lock cylinder can be fitted. The housing and its associated lock cylinder can be used as a direct replacement for existing rim lock cylinders or mortise lock cylinders. The upper, front portion of the outer housing portion can be enlarged for added strength. The enlarged portion can be provided with a receptacle into which a piece of hardened metal is fitted. An extension having a pair of right-angled slots projects from the rear face of the cylinder and the inner housing. The slots receive driving members in the form of cams or tailpieces such as those commonly used with rim cylinders and mortise cylinders. Additional inner housings of different lengths can be provided for those applications that require mortise cylinders of different lengths. The invention enables virtually any existing rim cylinder or mortise cylinder to be replaced without any factory components, thereby greatly reducing a locksmith's inventory requirements.
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