Auxiliary door latch having a locking device

Details Auxiliary door latch having a locking device Auxiliary door latch having a locking device

1994-06-29

1996-09-17

Meyers, Steven N.

Closure fasteners

Operators with knobs or handles

292348, 70224, 70479, 70223, E05B 300

Patent

active

055561446

ABSTRACT:
An auxiliary door latch includes a lock device for locking the auxiliary door latch from inside of the door panel so as to prevent the door panel from opening from outside of the door panel. The auxiliary door latch includes a knob having a tube extended inwards of the door panel, and a rod slidably engaged in the tube and having a pair of legs. The tube includes a pair of slots for engaging with the legs of the rod. The rod is depressed inwards of the knob so as to prevent the rod from rotational movement and so as to lock the auxiliary door latch.

REFERENCES:
patent: 1899997 (1933-03-01), Sullivan
patent: 1992126 (1935-02-01), Hurd
patent: 2497328 (1950-02-01), Smith et al.
patent: 2743123 (1956-04-01), Alexander
patent: 3075797 (1963-01-01), Patriquin et al.
patent: 3427061 (1969-02-01), McMeen et al.
patent: 4852922 (1989-08-01), Shih
patent: 5010752 (1991-04-01), Lin
patent: 5040391 (1991-08-01), Lin
patent: 5177987 (1993-01-01), Shen
patent: 5190327 (1993-03-01), Lin

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