Locking mechanism of a latch bolt

Details Locking mechanism of a latch bolt Locking mechanism of a latch bolt

1993-04-29

1994-02-08

Moore, Richard E.

Closure fasteners

Operators with knobs or handles

292357, 29216917, 29216918, E05C 116

Patent

active

052843726

ABSTRACT:
A latch bolt includes an outer knob and an inner knob, a tube rotatably engaged in the inner knob, a button having one end engaged in the tube and having the other end extendible outward of the inner knob, and a barrel rotatably received in the tube. The latch bolt is locked when the button is depressed inward of the inner knob and is unlocked when the inner knob is rotated. The latch is also unlocked when a key is inserted into the outer knob and when the outer knob is rotated.

REFERENCES:
patent: 3079189 (1963-02-01), Russell et al.
patent: 4966399 (1990-10-01), Lin
patent: 5074607 (1991-12-01), Lin
patent: 5190327 (1993-03-01), Lin

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