Combination lock with a device for changing the combination

Details Combination lock with a device for changing the combination Combination lock with a device for changing the combination

1998-09-09

1999-07-20

Gall, Lloyd A.

Locks

Portable

Padlocks

70312, E05B 3702

Patent

active

059243139

ABSTRACT:
A lock with a combination selecting mechanism for releasing is constructed by a U-shaped shackle and a locking bar. A combination selecting mechanism is provided in the locking bar. The lock can be released by selecting the correct number series on the tumblers. A combination change control mechanism is further provided in the combination selecting mechanism, so that the combination can not be reset when the combination change control mechanism is in effect, thereby it is possible to avoid an undesired combination change.

REFERENCES:
patent: 546969 (1895-09-01), Bozano
patent: 556573 (1896-03-01), Bozano
patent: 877682 (1908-01-01), Turman
patent: 970856 (1910-09-01), Simisky
patent: 1034263 (1912-07-01), Lorey
patent: 1117417 (1914-11-01), Meepos
patent: 1146443 (1915-07-01), Pellegrino
patent: 1205781 (1916-11-01), Pirog
patent: 5406811 (1995-04-01), Nakai
patent: 5560232 (1996-10-01), Chen
patent: 5787736 (1998-08-01), Ling
patent: 5791169 (1998-08-01), Kuo
patent: 5850751 (1998-12-01), Kuo

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