Locks – Special application – For closures
Patent
1986-04-11
1987-07-28
Wolfe, Robert L.
Locks
Special application
For closures
292153, E05B 6506
Patent
active
046824820
ABSTRACT:
A deadbolt lock mechanism for a door comprises an elongated bolt, means for guiding the bolt in the door between extended and retracted positions, a spindle unit having a cam for selectively engaging a transverse arcuate depression in the bolt for securing the bolt in the extended position, and a handle for moving the bolt between the extended and retracted positions. The bolt can be six inches long and capable of a stroke of two inches for engaging a stud supporting a frame for the door. The spindle unit can include a lock cylinder of conventional construction at one side of the door, and a thumbturn at the opposite side of the door, and other similar combinations. The mechanism can replace existing hardware at a standard backset distance of two and three eighths inches.
REFERENCES:
patent: 87907 (1869-03-01), Brumbach
patent: 743355 (1903-11-01), Walbridge
patent: 2468406 (1949-04-01), Mora
patent: 2547315 (1951-04-01), Gray
patent: 4272974 (1981-06-01), Hennessy
patent: 4321810 (1982-03-01), Wildenradt
patent: 4422677 (1983-12-01), Gater
Flyer: "The Medeco D-11", Security Locks, Inc., Salem, Virginia (Undated).
"The 2-inch Alternative" brochure, Securitech Group, Inc., Maspeth, N.Y. (Undated).
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