Combination door lock

Details Combination door lock Combination door lock

1988-02-29

1989-06-13

Gall, Lloyd A.

Locks

Special application

For control and machine elements

70298, E05B 1300

Patent

active

048380571

ABSTRACT:
A combination lock to be fitted in a door having standard size lock and bolt bores therein. A series of code pins extend through the lock bore and are movable between set and reset positions from both sides of the door to permit rotation of an exterior knob spindle to release the lock. An interior knob may be rotated to release the lock even though locked from the exterior. An adjustment feature selectively adjusts the lock to act as either a single lock or a double lock.

REFERENCES:
patent: 436597 (1890-09-01), Deal
patent: 684082 (1901-10-01), Morse et al.
patent: 1448888 (1923-03-01), Walters
patent: 1530861 (1925-03-01), Standen
patent: 1792949 (1931-02-01), Weissenboeck
patent: 2598457 (1952-05-01), Capdevila
patent: 2920473 (1960-01-01), Hansen
patent: 3226963 (1966-01-01), Mathieu
patent: 4191035 (1980-03-01), Hatch
patent: 4457147 (1984-07-01), Cumpston

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