Locks – Operating mechanism – Combination
Patent
1980-09-11
1982-10-12
Wolfe, Robert L.
Locks
Operating mechanism
Combination
70323, E05B 1514, E05B 3700
Patent
active
043532314
ABSTRACT:
Simplified tumbler wheel construction including an outer gate ring and an inner drive ring wherein the two rings are mounted together in snap-lock fashion.
The drive ring includes an undulated surface on its outer rim for mating engagement with an inner undulated surface on the mounting surface of the gate ring. The two rings are constructed of suitable resilient material resulting in passive biasing of the undulated surfaces together during normal operation. Adjustment of the drive ring relative the gate ring is accomplished by blocking rotation of the gate ring while applying a rotative force to the drive ring in excess of a predetermined amount to rotate the undulated surfaces relative each other against the resilient bias provided by the two rings. The amount of bias against rotation is controlled by an appropriately placed slot outward of the undulated surface on the gate ring to lower bias resistance to expansion during tumbler wheel adjustment.
REFERENCES:
patent: 145618 (1873-12-01), Brettell
patent: 3237435 (1966-03-01), Paul
patent: 3410121 (1968-11-01), Morin
patent: 4142388 (1977-03-01), Phillips
patent: 4312199 (1982-01-01), Uyeda
La Gard, Inc.
Wolfe Robert L.
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