Lockset adaptable for installation at more than one backset dist

Details Lockset adaptable for installation at more than one backset dist Lockset adaptable for installation at more than one backset dist

1991-07-01

1992-10-06

Moore, Richard E.

Closure fasteners

Adjustable backset

292337, 292173, E05C 116

Patent

active

051525585

ABSTRACT:
A lockset is adaptable for installation at more than one backset distance including a bolt assembly which has a latch member and a separable drawbar located within a housing assembly, a portion of which is also made up of two relatively movable portions. Operation of the lock is standard in so far as extending and retracting the bolt is concerned, while adjustment of the backset distance is accomplished by simultaneously adjusting the lengths of the bolt assembly and the housing assembly. Visual indication of backset distance is provided as is adaptability without the use of tools. Bolt throw disablement is provided when the lockset is in the transfer position for changing backset.

REFERENCES:
patent: 2674481 (1954-04-01), Russell et al.
patent: 2905495 (1959-09-01), Adamson
patent: 2961264 (1960-11-01), Hillgren
patent: 4483162 (1984-11-01), Dunphy et al.
patent: 4739638 (1988-04-01), Lin
patent: 4759576 (1988-07-01), Ching
patent: 4767140 (1988-08-01), Lin
patent: 4950008 (1990-08-01), Fang
patent: 4976122 (1990-12-01), Doolan et al.
patent: 4979768 (1990-12-01), Marotto et al.

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