High security lock system including cover plate

Details High security lock system including cover plate High security lock system including cover plate

1994-10-14

1996-11-12

Boucher, Darnell M.

Locks

Operating mechanism

Key

70417, 70 52, 70 38A, E05B 904, E05B 6722

Patent

active

055728901

ABSTRACT:
A high security lock includes a lock housing, lock cylinder and a lock core. The lock housing defines a key receiving surface and a cavity for receiving the lock cylinder. A cover plate is attached to the lock housing and is located between the lock cylinder and the key receiving surface. The cover plate covers a portion of the lock core. A retaining shield is received in the cavity, which engages the cover plate and is attached within the cylinder.

REFERENCES:
patent: 3422643 (1969-01-01), Foote
patent: 3835676 (1974-09-01), Foote
patent: 4241594 (1980-12-01), Miller et al.
patent: 4290279 (1981-09-01), Fish et al.
patent: 4419873 (1983-12-01), Sopko
patent: 5211044 (1993-05-01), Kim

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