Lock assembly for sliding doors

Details Lock assembly for sliding doors Lock assembly for sliding doors

1987-01-23

1988-07-05

Wolfe, Robert L.

Locks

Special application

For closures

70 99, 70462, 292 39, 292302, E05B 6508

Patent

active

047546247

ABSTRACT:
An improved lock assembly is provided for high security locking of sliding door particularly such as sliding glass patio doors used in residential dwellings and the like. The improved lock assembly comprises a lock mechanism incorporated into the vertical stile at one side of a sliding door, wherein the lock mechanism is adapted for respective keyed and keyless operation from opposite sides of the door for displacing dual latch members toward and away from each other between locked and unlocked positions. In the locked position, the dual latch members engage a latch keeper on the adjacent door jamb for positively locking the door against unauthorized entry. The lock mechanism is conveniently integrated into a compact cartridge for facilitated mounting into a hollow extruded metal stile. In addition, the lock mechanism may include internal tumblers designed to resist keyless unlocking from the outdoor side of the door.

REFERENCES:
patent: 2166535 (1939-07-01), Sarenholm
patent: 2284921 (1942-06-01), Purkiss
patent: 2787154 (1957-04-01), Wesberry
patent: 2817551 (1957-12-01), Gieleghem
patent: 3086383 (1963-04-01), Scott
patent: 3308579 (1967-03-01), Thams
patent: 3403432 (1968-10-01), Bencene
patent: 4370874 (1983-02-01), Munn
patent: 4631937 (1986-12-01), Debus
patent: 4648636 (1987-03-01), Reynard
Advertising Fullex Ltd. United Kingdom (one page).
Advertising Fullex U.S., Inc. (two pages).

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