Closure fasteners – Adjustable backset
Patent
1995-03-13
1996-11-05
Lindsey, Rodney M.
Closure fasteners
Adjustable backset
292337, E05C 100
Patent
active
055709125
ABSTRACT:
An adjustable latch assembly which is to be operated by an operator assembly having a rotatable spindle including a half round actuator and a pair of connection stems which are to be inserted into the adjustable latch assembly, comprising a cover including a central opening for receiving the half round actuator, having a pair of stop surfaces for limiting clockwise or counterclockwise rotation of the half round actuator and a stem receiving hole in the end portion remote from the stop surfaces, a housing for supporting the cover for displacement from one backset location to a second backset location, a first stem hole aligned with the cover hole when the cover is at one backset location, a second stem hole, and a third stem hole rearwardly spaced from the second stem hole a distance corresponding to the backset difference, a latch-bolt head, a retracting assembly operable to displace the latch-bolt head including a displaceable retracting member having rearwardly extending legs for engaging the half round actuator when the cover is at one backset location, and a backset converter having rearwardly extending legs and an effective length equal to the backset difference.
REFERENCES:
patent: 3112944 (1963-12-01), Adler
patent: 4427224 (1984-01-01), Bergen
patent: 4564229 (1986-01-01), Mullich et al.
patent: 4623174 (1986-11-01), Trull et al.
patent: 4746154 (1988-05-01), Fang
patent: 4750766 (1988-06-01), Shen
patent: 4850626 (1989-07-01), Gallego
patent: 5149151 (1992-09-01), Shen
patent: 5257837 (1993-11-01), Bishop
patent: 5354109 (1994-10-01), Lin
Emhart Inc.
Lindsey Rodney M.
Smith Spencer T.
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