Interior door lock assembly with a safety device

Details Interior door lock assembly with a safety device Interior door lock assembly with a safety device

1997-11-24

1999-05-11

Boucher, Damell M.

Locks

Operating mechanism

Key

70210, 292DIG4, 292DIG37, E05B13/00

Patent

active

059015900

ABSTRACT:
An interior door lock assembly includes a casing secured to an inner side of a door plate and including a central hole and two diametrically disposed holes. A switch button has a stub extended through the central hole to engage with a tail piece of a lock core to rotate therewith. A press button assembly is mounted to the switch button and includes a seat securely mounted in a compartment defined in the switch button. A spring-biased press button is partially, slidably mounted in the seat. When the switch button is in a latched position, the press button is pressable to engage with one of the holes of the casing to prevent from unlatching of the interior door lock assembly from outside of the door plate.

REFERENCES:
patent: 1379048 (1921-05-01), Scholl
patent: 1956388 (1934-04-01), Kalina
patent: 2210080 (1940-08-01), Hover et al.
patent: 3156493 (1964-11-01), Griffiths
patent: 3895505 (1975-07-01), WasserFaller
patent: 4538844 (1985-09-01), Watanabe
patent: 4702506 (1987-10-01), Iimura
patent: 5327632 (1994-07-01), Moore
patent: 5421074 (1995-06-01), Moore
patent: 5562317 (1996-10-01), Kuo et al.
patent: 5671957 (1997-09-01), Raffini

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