Tumbler plate cylinder lock

Details Tumbler plate cylinder lock Tumbler plate cylinder lock

1986-04-15

1987-07-28

Wolfe, Robert L.

Locks

Operating mechanism

Key

70377, 70DIG54, E05B 2908

Patent

active

046824847

ABSTRACT:
A tumbler plate cylinder lock having a hollow housing, a cylinder rotatably mounted into the housing, and a plurality of sheet-like locking members, or tumbler plates, snugly fitted in the cylinder. Each two locking members is interlocked by an arciform-shaped spring in such a manner that one extension of each locking member will be urged to extend out of a corresponding passage formed on the peripheral wall of a center bore of the cylinder and into a respective longitudinal slot formed on the inner peripheral surface of the housing, thus the cylinder is prevented from turning relative to the housing, whereby the cylinder lock is held in a locked position. Each locking member has a central opening for receiving a key having a shank provided with a plurality of depressions, and the central opening has a side wall provided with a projection to match a corresponding depression of the key shank.

REFERENCES:
patent: 2047966 (1936-07-01), Jacobi
patent: 2155734 (1939-04-01), Olson
patent: 2453066 (1948-11-01), Gabrielsen
patent: 3777521 (1973-12-01), Lipschutz

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