Disc tumbler cylinder lock

Details Disc tumbler cylinder lock Disc tumbler cylinder lock

1984-07-13

1987-02-24

Wolfe, Robert L.

Locks

Operating mechanism

Key

70377, E05B 1514, E05B 2904

Patent

active

046447687

ABSTRACT:
A disc tumbler cylinder lock wherein the cylinder has transverse slots for frame-like tumblers having enlarged portions normally extending into the case for the cylinder under the action of springs to thus prevent rotation of the cylinder except on insertion of a proper key which retracts the tumblers into the cylinder. The enlarged portions are wedges which form part of U-shaped or Z-shaped sections of the frames.

REFERENCES:
patent: Re20143 (1936-10-01), Gray
patent: 1470810 (1923-10-01), Charlton
patent: 1725557 (1929-08-01), Baird
patent: 1850323 (1932-03-01), Heyer
patent: 1860708 (1932-05-01), Falk
patent: 1877404 (1932-09-01), Jacobi
patent: 1990794 (1935-02-01), McCormac
patent: 2047966 (1936-07-01), Jacobi
patent: 2058893 (1936-10-01), Ledin
patent: 2483365 (1949-09-01), Feldman
patent: 2790318 (1957-04-01), Jannette
patent: 3699790 (1972-10-01), Ansala
patent: 3735614 (1973-05-01), Keller-Volper

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