Combination lock

Details Combination lock Combination lock

1992-09-03

1994-09-06

Cuomo, Peter M.

Locks

Operating mechanism

Combination

70314, 70333R, 70321, 70 15, E05B 3704

Patent

active

053437233

ABSTRACT:
In accordance with one aspect of the invention, a kicker arm-pawl lock mechanism rotates a number one wheel of a combination lock a predetermined distance to require resetting each number of a combination during lock manipulation. A drive cam-travel arm and bolt lock mechanism assures complete scrambling of the combination by requiring rotation of all wheels prior to bolt extension into a locked position. Another aspect of the invention includes a lock lever and drive cam mechanism which requires opening of the combination lock once a combination has been correctly dialed. A lock lever and pivoting pawl lock mechanism prevents lockout conditions by diverting forces applied to the combination lock bolt to the lock casing rather than the lock lever.

REFERENCES:
patent: 2256827 (1911-09-01), Fowler
patent: 2925726 (1960-02-01), Miller
patent: 3077099 (1963-02-01), Fitchett
patent: 3906761 (1975-09-01), Swaim
patent: 4359883 (1982-11-01), Bechtiger et al.
patent: 4420955 (1983-12-01), Marold
patent: 4708006 (1987-11-01), Hodgson
patent: 4910981 (1990-03-01), Gartner
patent: 5095724 (1992-03-01), Lainhart
patent: 5257519 (1993-11-01), Miller, III

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