Door lock with extra release

Details Door lock with extra release Door lock with extra release

1988-03-09

1989-08-29

Moore, Richard E.

Closure fasteners

Latch-spindle catches

E05C 116

Patent

active

048610844

ABSTRACT:
A door having a releasable door lock is disclosed for use in e.g. a bathroom. The locking mechanism comprises a plate having a slot which in use is moved to surround the square section spindle and prevent its rotation. The plate is moved by means of a rotatable pin which includes a toothed wheel such that rotation of the wheel moves the plate and locks it in position. The door is releasable from the outside of the room in an emergency.

REFERENCES:
patent: 396571 (1889-01-01), Iddings et al.
patent: 991018 (1911-05-01), Powers
patent: 1192269 (1916-07-01), Borland
patent: 2125518 (1938-08-01), Oldham
patent: 2200714 (1940-05-01), Falk
patent: 2295435 (1942-09-01), Teich
patent: 2316493 (1943-04-01), Swarens et al.
patent: 2370645 (1945-03-01), Falk
patent: 2400403 (1946-05-01), Falk
patent: 2605124 (1952-07-01), Hillgren
patent: 4422312 (1983-12-01), Chermoni

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