Backset adjustable door latch

Details Backset adjustable door latch Backset adjustable door latch

1988-11-04

1990-05-01

Nicholson, Eric K.

Closure fasteners

Bolt casings

E05C 116

Patent

active

049212907

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 cam which extends and retracts the latch bolt and has a rotational axis which is movable between the backset positions. The cam lever cooperates with a bolt extension which adjustably engages the bolt such that upon transposition of the cam lever, the bolt extension is adjusted relative to the bolt accordingly. A cam stabilizer plate prevents adjustment of the backset once the latch is installed.

REFERENCES:
patent: 3790196 (1974-02-01), Sanders et al.
patent: 3799592 (1974-03-01), Babb, Jr. et al.
patent: 3799593 (1974-03-01), Dielman
patent: 4060267 (1977-11-01), Monfardini
patent: 4602490 (1986-07-01), Glass et al.
patent: 4682482 (1987-07-01), Hall
patent: 4711477 (1987-12-01), Fann et al.

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