Multiple backset latch

Details Multiple backset latch Multiple backset latch

2007-05-29

2007-05-29

Estremsky, Gary (Department: 3676)

Closure fasteners

Adjustable backset

C292SDIG060

Reexamination Certificate

active

11038993

ABSTRACT:
Disclosed is a door latch assembly having an integrated means to accommodate multiple backset dimension requirements while facilitating the backset adjustment selection to be done in an easy and convenient manner. The multiple backset latch has as primary components a housing body assembly and a latch bolt housing assembly. The latch bolt housing assembly includes a housing body channel member, a cam support plate member, a bolt retractor member, a cam lever member, a positioning spring member, and a housing body plate. The latch bolt housing assembly further includes a latch bolt head. The housing body channel has an oval aperture corresponding to accept the cam lever member. The oval aperture has multiple radii sufficient to accommodate lateral movement to provide 60 mm (2⅜ inches) and 70 mm (2¾ inches) backset.

REFERENCES:
patent: 5743573 (1998-04-01), Huang
patent: 6186562 (2001-02-01), Huang
patent: 6334635 (2002-01-01), Huang
patent: 6688660 (2004-02-01), Huang
patent: 6736432 (2004-05-01), Huang et al.

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