Door lock construction

Details Door lock construction Door lock construction

1980-05-14

1982-12-14

Lyddane, William E.

Locks

Special application

For closures

70151R, 70472, 70DIG6, 29216914, 292333, E05B 5500

Patent

active

043632270

ABSTRACT:
An improved door lock construction comprising a lock bolt formed in U-shape operable in association with an actuating mechanism, an interlocking device, a dog device and a hold-release device assembled in a box type housing to be mounted on the inner side of the door, capable of locking the door on closing and further locking with a key.

REFERENCES:
patent: 491285 (1893-02-01), Herrmann
patent: 861420 (1907-07-01), Young
patent: 1299195 (1919-04-01), Kohn
patent: 2613094 (1952-10-01), Schlage
patent: 3912309 (1975-10-01), Fischer et al.

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