Locks – Operating mechanism – Combination
Patent
1996-03-27
1997-09-02
Dino, Suzanne
Locks
Operating mechanism
Combination
70 78, E05B 3702
Patent
active
056619910
ABSTRACT:
A combination lock device includes a mechanical combination lock, a positioning plate, an extension shaft, a securing seat and an eccentric shaft. The combination lock consists of a housing, a lock shaft, a lock piece and a lock seat. When the number dials of the combination lock are turned to a set number, a lock hook of the combination lock disengages from a retain slot of the positioning plate. The combination lock may then be turned counter-clockwisely through 180 degrees so that the extension shaft and the eccentric shaft synchronously turn counter-clockwisely through 180 degrees, causing an eccentric rod linked up with a switch device in the drawer to displace through 180 degrees to allow opening of the drawer. In order to close the drawer, the procedure is reversed so that, after the combination lock and the positioning plate are positioned, the lock hook engages the retain hole by the turning of any one of the number dials.
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patent: 3908416 (1975-09-01), Heine et al.
patent: 4569213 (1986-02-01), Scelba
patent: 4610152 (1986-09-01), Duringer
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patent: 4766748 (1988-08-01), Yang
patent: 4907430 (1990-03-01), Hong
patent: 4991416 (1991-02-01), Resendez et al.
patent: 5125248 (1992-06-01), Ling
patent: 5307657 (1994-05-01), Klein et al.
patent: 5358322 (1994-10-01), McLaughlin
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