Door lock mechanism with a release button

Details Door lock mechanism with a release button Door lock mechanism with a release button

1996-10-30

1997-09-23

Meyers, Steven N.

Locks

Special application

For closures

292264, 292274, 29234117, 292278, E05B 6500

Patent

active

056692560

ABSTRACT:
A door lock mechanism includes a retainer housing mounted to a doorframe and a chain housing mounted to a door plate. The retainer housing includes a retaining slot defined in a lateral side thereof and a lock core mounted therein. A lock piece is pivotally received in the retaining slot and is releasably engaged with the retaining member. A chain is mounted in the chain housing and includes a fixed first end and a second end to which a slide bolt is securely attached. The slide bolt is releasably, slidably received in the retaining slot of the retainer housing. When in a locked position and when a release button is in its first position, the lock piece is stopped by the retaining member and the slide bolt is retained in the retaining slot and thus allows the door to be opened for a small gap. When in a locked position and when the release button is in its second position, the lock piece is disengaged from the lock piece and thus allows removal of the slide bolt from the retaining slot without operation of the lock core.

REFERENCES:
patent: 832420 (1906-10-01), Rinaldy
patent: 3071958 (1963-01-01), Russo
patent: 3897966 (1975-08-01), Draughton, Sr.
patent: 4850820 (1989-07-01), Baber

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