Protective lock mounting plate for safe door locks

Details Protective lock mounting plate for safe door locks Protective lock mounting plate for safe door locks

1983-06-27

1985-04-09

Smith, Gary L.

Locks

Operating mechanism

Combination

109 84, 70417, 70DIG43, E05B 1516

Patent

active

045093504

ABSTRACT:
A protective lock mounting plate is provided between a lock housing on the interior of a safe door and the interior surface of the safe door to resist drilling into the lock housing through the door in areas adjacent a combination dial, or the like, on the exterior of the safe door in a frontal location relative lock works within the lock housing. Non-drillable material is positioned in annular rings bonded in grooves of concentric circular configuration formed in a surface of the mounting plate which is directed against the interior surface of the door facing in the direction from which drilling intrusion is anticipated.

REFERENCES:
patent: 261533 (1882-07-01), Corliss
patent: 881032 (1908-03-01), Schultz
patent: 1607426 (1926-11-01), Bell et al.
patent: 3844019 (1974-10-01), Shwayder et al.
patent: 3976434 (1976-08-01), Shwayder
patent: 4142388 (1979-03-01), Phillips

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