Dial lock

Details Dial lock Dial lock

1988-07-06

1990-03-06

Smith, Gary L.

Locks

Operating mechanism

Combination

70308, 70316, E05B 3702

Patent

active

049054880

ABSTRACT:
A dial lock comprises: a slide bar (10) which is controlled of its movement by engagement with a lock pin (2), dials (3) for controlling movement of the lock pin (2) with respective optional retrieving number, return-to-zero gears (6) to return the dials (3) to these zero-indicating positions at the time of locking and unlocking, and anti-locking means for enabling the locking only after a case when at least one of the dials is set to indicate a number other than zero, whereby optional unlocking number can be set without fail in locking operation.

REFERENCES:
patent: 1078120 (1913-11-01), Ziehler
patent: 1200709 (1916-10-01), Clendenny
patent: 1579046 (1926-03-01), Wildrick
patent: 2640344 (1953-06-01), Margo
patent: 3462984 (1969-08-01), Soler Marti et al.
patent: 3633388 (1972-01-01), Atkinson
patent: 4048821 (1977-09-01), Bako et al.
patent: 4343165 (1982-08-01), Bako
patent: 4602491 (1986-07-01), Mauer
patent: 4610152 (1986-09-01), Duringer
patent: 4754623 (1988-07-01), Hwang

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