Lock and door reinforcing plate means

Locks – Operating mechanism – Key

Patent

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Details

70452, 70381, E05B 6300

Patent

active

045220484

ABSTRACT:
A lock and door reinforcing plate device comprising plate members adapted to be secured to the opposite faces of the door by common bolt members which extend through the plates and the door and the lock assembly, a tube member is secured to the inner face of one of the plate members and extend through the door for encasing the usual lock cylinder assembly, the lock cylinder assembly is secured to one of the plates and is disposed within the tube in a manner substantially precluding unauthorized tampering or removal of the lock cylinder assembly thus substantially precluding unauthorized unlocking of the lock assembly.

REFERENCES:
patent: Re16123 (1925-07-01), Schonwald
patent: 4466264 (1984-08-01), de Nero

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