Door latch assembly

Details Door latch assembly Door latch assembly

1992-03-03

1992-12-08

Moore, Richard E.

Closure fasteners

Adjustable backset

292169, 292DIG60, E05C 116

Patent

active

051691841

ABSTRACT:
A door latch having an adjustable backset position which allows it to be used in doors having either a 23/8" backset or a 23/4" backset. The latch includes a latch housing having a pair of aligned openings comprising two longitudinally spaced apart openings in communication with each other via a relatively narrow passageway. A cam is movable between the two openings through the passageway to adjust the backset. The cam cooperates with a retract slide which is engaged at its front end with the latch bolt to retract the latch bolt. The retract slide contains two sets of teeth at its back end, one set of teeth being engaged by the cam when it is in a first backset position and the second set of teeth being engaged by the cam when it is in a second backset position.

REFERENCES:
patent: 4615549 (1986-10-01), Couture
patent: 4711477 (1987-12-01), Fann et al.
patent: 4750766 (1988-06-01), Shen
patent: 4921290 (1990-05-01), Dietrich
patent: 4988133 (1991-01-01), Shih

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