Key with movable plunger, security barrel for said key, and a lo

Details Key with movable plunger, security barrel for said key, and a lo Key with movable plunger, security barrel for said key, and a lo

1985-03-13

1987-05-26

Holko, Thomas J.

Locks

Operating mechanism

Key

70358, 70409, 70421, E05B 1908

Patent

active

046674950

ABSTRACT:
A key comprises a key body provided with at least one translatably movable plunger able to be displaced in a housing provided in the key, the plunger being intended to co-operate with a positioning member provided in the recess of a rotor so as to project from its recess and to push a movable pin of the rotor into a position permitting rotation of the barrel rotor relative to the stator. The key comprises in its head a constricted zone, and the recess of the movable plunger is provided in this constricted zone.

REFERENCES:
patent: 601111 (1898-03-01), Wolfgramm
patent: 1494765 (1924-05-01), Barrett
patent: 3877267 (1975-04-01), Harris, Jr.
patent: 4341102 (1982-07-01), Ku et al.
patent: 4343166 (1982-08-01), Hofmann
patent: 4377082 (1983-03-01), Wolter

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