Cylinder lock

Details Cylinder lock Cylinder lock

1991-11-26

1993-11-30

Cuomo, Peter M.

Locks

Operating mechanism

Key

70360, 70380, E05B 1704

Patent

active

052654532

ABSTRACT:
A cylinder lock is disclosed having significant resistance to damage or tampering. The cylinder lock comprises an axial cam provided on the key cylinder; a rotator which may be engaged with the sleeve and be in contact with the axial cam of the key cylinder; a stopper positioned adjacent to the rotator and having a pair of lugs engageable with a recess of the casing; and an axial spring positioned between the stopper and a connector for resiliently urging the stopper toward the rotator. The rotator and stopper are axially moved by the axial cam of the key cylinder to release engagement of the rotator with the sleeve and also to release engagement of the stopper with the casing when the key cylinder is rotated independently of the sleeve by a correct key, thereby the rotator comes into engagement with the connector. By further rotating the key cylinder, the rotator, stopper and connector are rotated as a unit to a locked or unlocked position.

REFERENCES:
patent: 3686906 (1972-08-01), Watkins et al.
patent: 4512166 (1985-04-01), Dunphy et al.
patent: 4633689 (1987-01-01), Wolniak et al.
patent: 4759204 (1988-07-01), Neyret
patent: 4773240 (1988-09-01), Foshee
patent: 4903512 (1990-02-01), Leroy et al.
patent: 4936895 (1990-06-01), Leclerc et al.
patent: 5044183 (1991-09-01), Neyret
patent: 5070716 (1991-12-01), Whorlow

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