Cylinder lock

Details Cylinder lock Cylinder lock

1994-11-29

1996-11-26

Meyers, Steven N.

Locks

Operating mechanism

Key

70422, E05B 910

Patent

active

055774091

ABSTRACT:
When a key other than a regular key or the like is inserted to forcibly rotate a key rotor, a coupling member is moved in a direction indicated by an arrow by an uncoupling mechanism. This movement uncouples a rear rotor from the coupling member. As a result, the key rotor and a sleeve only rotate idly, and the rear rotor and a lock lever are not rotated. Hence, a cylinder lock is not unlocked, and no damaging force is never applied to components of the cylinder lock such as tumblers.

REFERENCES:
patent: 3410123 (1968-11-01), Jacobi
patent: 3992907 (1976-11-01), Pilvet
patent: 4903512 (1990-02-01), Leroy
patent: 4936895 (1990-06-01), Leclerc
patent: 5044183 (1991-09-01), Neyret
patent: 5070716 (1991-12-01), Whorlow
patent: 5263348 (1993-11-01), Wittwer
patent: 5265453 (1993-11-01), Konii

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