Door lock unlockable from indoor side

Details Door lock unlockable from indoor side Door lock unlockable from indoor side

1983-03-02

1984-11-06

Smith, Gary L.

Locks

Special application

For closures

70208, 292 21, 2923363, 292DIG27, E05B 6510, E05C 904

Patent

active

044804512

ABSTRACT:
A door lock unlockable from the indoor side comprises a handle device and a lock device. The handle device includes an indoor handle and an outdoor handle for operating a latch means for a door panel to a stationary frame. The lock device is operated from the outdoor side so as to be brought into and out of engagement with said indoor handle thereby to lock said indoor handle and said outdoor handle against rotation. The indoor handle is pivotally supported so as to be able to be swung towards and away from said door panel and adapted to be disengaged from said lock device by a predetermined swinging toward or away from said door panel, the engaging structure between said indoor handle and said lock device being exposed on the inner surface of said door panel. The door lock permits an easy recognition and understanding of the way to manipulate the indoor unlocking mechanism, as well as a simple and easy manipulation, thereby to ensure a prompt escape from the chamber.

REFERENCES:
patent: 2239301 (1941-04-01), Papst
patent: 2246708 (1941-06-01), Wieben
patent: 2599054 (1952-06-01), Gates et al.
patent: 3044287 (1962-07-01), Pelcin
patent: 3745796 (1973-07-01), Fleming
patent: 4108482 (1978-08-01), Dietrich et al.

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