Guard plate for locks

Details Guard plate for locks Guard plate for locks

1993-08-06

1995-03-28

Cuomo, Peter M.

Locks

Operating mechanism

Key

70423, 70452, E05B 1516

Patent

active

054006287

ABSTRACT:
A protective guard is provided for a lock cylinder in a door, which consists of a generally rectangular metal plate assembly having a central passageway therethrough. Components are for attaching the plate assembly to the door with the central passageway generally aligned with the lock cylinder. The attaching components are concealed, removable and adjustably connected to an inner side of the plate assembly, thereby rendering the lock cylinder less susceptible to tampering.

REFERENCES:
patent: 3343386 (1967-09-01), Hall
patent: 3844144 (1974-10-01), Schmitt
patent: 3899907 (1975-08-01), Prahl
patent: 4074552 (1978-02-01), Smith
patent: 4160368 (1979-07-01), Solow
patent: 4237712 (1980-12-01), Cramer
patent: 4316371 (1982-02-01), Del Nero
patent: 4466264 (1984-08-01), Del Nero
patent: 4530223 (1985-07-01), Oliver
patent: 4548062 (1985-10-01), Kaufman
patent: 4638652 (1987-01-01), Morse et al.
patent: 4712403 (1987-12-01), Markisello
patent: 5195342 (1993-03-01), Werner
patent: 5267461 (1993-12-01), Eizen

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