Combination lock having a second lock mechanism

Details Combination lock having a second lock mechanism Combination lock having a second lock mechanism

2005-07-05

2005-07-05

Gall, Lloyd A. (Department: 3676)

Locks

Special application

For portable articles

C070S074000, C070S284000, C070S285000, C070SDIG063

Reexamination Certificate

active

06912880

ABSTRACT:
A combination lock having a combination lock mechanism and a key lock mechanism. The combination lock mechanism is able to unlock and lock the combination lock by switching a plurality of dials exposed on the surface of the combination lock, while the key lock mechanism allows the user to unlock the combination lock with a key.

REFERENCES:
patent: 1377737 (1921-05-01), Stosech
patent: 3347069 (1967-10-01), Hollingshead, Jr.
patent: 3408839 (1968-11-01), Walters
patent: 3750431 (1973-08-01), Atkinson
patent: 4290286 (1981-09-01), Rae
patent: 4499745 (1985-02-01), Ricouard et al.
patent: 4557122 (1985-12-01), Hwang
patent: 4671088 (1987-06-01), Jeang
patent: 5237842 (1993-08-01), Rasch et al.
patent: 5485734 (1996-01-01), Yang
patent: 5557954 (1996-09-01), Ling
patent: 6792778 (2004-09-01), Chen

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