Dual backset deadbolt assembly

Details Dual backset deadbolt assembly Dual backset deadbolt assembly

1988-11-08

1990-05-22

Nicholson, Eric K.

Closure fasteners

Bolts

Sliding

292337, 292DIG74, E05C 116

Patent

active

049271954

ABSTRACT:
A dual backset deadbolt assembly to be associated with a lock having a rotatable cylinder which has two axially extending crank members for actuating a deadbolt to move in two opposite directions, wherein the deadbolt assembly comprises a deadbolt housing holding a deadbolt, a rear extension housing having two side plates with aligned crank holes therein, a transmission plate having a front end engaging with the deadbolt, and two independently movable axial strip members slideably provided between two side plates on either side of the crank holes provided in the side plates, the strip members being connected to the rear forked portion of the transmission plate and having a plurality of teeth each extending into each crank hole, the strip members being selectable for cooperation with the operative crank member by the engagement of one of the teeth and the operative crank member.

REFERENCES:
patent: 2253257 (1941-08-01), Wellman
patent: 2990209 (1961-06-01), Butler
patent: 3927905 (1975-12-01), Erickson
patent: 4427224 (1984-01-01), Bergen
patent: 4615549 (1986-10-01), Couture
patent: 4623174 (1986-11-01), Trull et al.
patent: 4687239 (1987-08-01), Lin
patent: 4711477 (1987-12-01), Fann et al.
patent: 4750766 (1988-06-01), Shen
patent: 4804216 (1989-02-01), Maroito

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