Combination lock

Details Combination lock Combination lock

1983-02-22

1985-05-28

Smith, Gary L.

Locks

Operating mechanism

Combination

70316, E05B 3712

Patent

active

045192294

ABSTRACT:
A combination lock includes a bolt plate that can be retracted independently of a fence plate and dial wheel assemblies when a strap hinge is pressed thereagainst so that the bolt plate can latch into the strap hinge whether the dial wheel assemblies are in a proper combination symbols or not. The bolt plate which latches into the strap hinge can be moved against a biasing force by means of a fence plate which has spaced apart downward hook members abutted against three dial wheel assemblies when it is locked against a releasing movement. Each of the dial wheel assemblies are provided with a radial bore and an axial groove, the radial bores being respectively registered with the axial grooves when the dial wheels are in the proper combination of symbols in a proper sequence for permitting the releasing movement of the fence plate that brings the bolt plate to an unlatching position.

REFERENCES:
patent: 3851507 (1974-12-01), Gehrie
patent: 4123923 (1978-11-01), Bako
patent: 4155234 (1979-05-01), Bako
patent: 4198837 (1980-04-01), Gisiger
patent: 4343163 (1982-08-01), Scelba et al.
patent: 4385509 (1983-05-01), Milles et al.

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