Dial lock

Details Dial lock Dial lock

1989-06-16

1991-04-16

Wolfe, Robert L.

Locks

Operating mechanism

Combination

70306, 70309, 70315, E05B 3702

Patent

active

050072625

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: 1579046 (1926-03-01), Wildrick
patent: 1947813 (1934-02-01), Theriot
patent: 2007663 (1935-07-01), Rapp
patent: 2165674 (1939-07-01), Pelle
patent: 2621508 (1952-12-01), Porche
patent: 2640344 (1953-06-01), Margo
patent: 2886962 (1959-05-01), Soler Marti et al.
patent: 2896439 (1959-07-01), Holmberg
patent: 3462984 (1969-08-01), Soler Marti et al.
patent: 3633388 (1972-01-01), Atkinson
patent: 4027508 (1977-06-01), McGourty
patent: 4048821 (1977-09-01), Bako et al.
patent: 4602491 (1986-07-01), Mauer
patent: 4732020 (1988-03-01), Pieddeloup
patent: 4754623 (1988-07-01), Hwang

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