Tumbler lock

Details Tumbler lock Tumbler lock

1976-06-21

1978-08-08

Dorner, Kenneth J.

Locks

Operating mechanism

Key

70376, E05B 2906

Patent

active

041048970

ABSTRACT:
Within a common tumbler chamber an adjacent plurality of dragged lock tumblers travel axially to an alignment arrangement, are returned to a constant misalignment arrangement by a common tumbler returning means, and are adaptable to couple a centrally rotatable lock plug to and from a lock cylinder. In certain embodiments, ribbed split-pin lock tumblers couple a splined plug to and from a splined cylinder, while in other embodiments non-ribbed split-pin lock tumblers couple a plug to a cylinder. Lock tumblers are also returned to constant misalignment by a plurality of biased members each of which is offset in spaced recesses in the surface of a common tumbler chamber.

REFERENCES:
patent: 450745 (1891-04-01), Lincoln
patent: 2044534 (1936-06-01), Lejbowicz
patent: 2142610 (1939-01-01), Kittler
patent: 2588230 (1952-03-01), George
patent: 3916657 (1975-11-01), Steinbach

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