Closure fasteners – Adjustable backset
Patent
1995-01-13
1996-03-12
Meyers, Steven N.
Closure fasteners
Adjustable backset
292337, 292DIG60, E05C 100
Patent
active
054980372
ABSTRACT:
A door lock assembly includes an elongated latch bolt having an enlarged front end portion and a cylindrical rear end portion which is formed with axially spaced and aligned first and second protrusions that cooperatively define a rear engaging groove therebetween. The first protrusion and the front end portion cooperatively define a front engaging groove therebetween. A movable member has a vertical end plate transverse to the bolt and formed therethrough with an engaging through-hole through which the rear end portion of the bolt extends fittingly and rotatably. The end plate has an annular inner wall which defines the through-hole and which is formed with a radially extending notch that is sized to permit extension of the protrusions therethrough. The inner wall of the end plate is engaged selectively within one of the engaging grooves in a manner such that the notch is deflected from the protrusions of the bolt, so as to prevent axial movement of the movable member relative to the bolt. The bolt is rotatable to align the protrusions thereof with the notch of the movable member so as to disengage the inner wall of the movable member from one of the engaging grooves and to permit axial movement of the movable member relative to the bolt in order to engage the inner wall of the movable member within the other one of the engaging grooves.
REFERENCES:
patent: 4729586 (1988-03-01), Fang
patent: 4736973 (1988-04-01), Fang
patent: 4752090 (1988-06-01), Lin
patent: 4772055 (1988-09-01), Fang
patent: 4840412 (1989-06-01), Shen
patent: 4840413 (1989-06-01), Shen
patent: 4844522 (1989-07-01), Pechar
patent: 4957315 (1990-09-01), Lin
patent: 5149151 (1992-09-01), Shen
patent: 5257841 (1993-11-01), Geringer
Estremsky Gary
Meyers Steven N.
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