Mortise cylinder lock guard

Details Mortise cylinder lock guard Mortise cylinder lock guard

1989-05-04

1989-12-05

Wolfe, Robert L.

Locks

Operating mechanism

Key

70160, E05B 1714

Patent

active

048844241

ABSTRACT:
A mortise cylinder lock guard for providing protection to a mortise cylinder lock when installed in a door includes a collar for situating between a front face of the lock and the door and substantially surrounding the lock at an outer periphery thereof. A cover is attached to the collar to substantially cover and prevent access to a keyhole of the lock. A hinge attaches the collar and the cover together to allow the cover to be moved between an open and a closed position, the open position permitting access to the keyhole and the closed position preventing access to the keyhole. A hasp is coupled to the collar and the cover for permitting locking of the cover in a closed position by use of a padlock.

REFERENCES:
patent: 3477201 (1969-11-01), Siana
patent: 3714804 (1971-11-01), French
patent: 4070882 (1978-01-01), Ruiz
patent: 4227388 (1980-10-01), Nigrelli
patent: 4254888 (1981-03-01), Chandler
patent: 4631938 (1986-12-01), Johnson
patent: 4665728 (1987-05-01), Azzara
patent: 4732024 (1988-03-01), Nagy
patent: 4777812 (1988-10-01), Haugen
U.S. Lock Corp. Catalog pages, 1988.

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