Doorjamb anti-separation device

Details Doorjamb anti-separation device Doorjamb anti-separation device

1991-07-10

1992-07-14

Moore, Richard E.

Closure fasteners

Rigid engaging means

292DIG39, 292DIG41, E05C 2102

Patent

active

051296934

ABSTRACT:
A device which prevents separation of a doorjamb and door to provide security against forced entry into a building by an intruder. The device includes a doorjamb plate which is attached to the interior of a hollow metal door frame, and includes a retaining plate which is attached to the interior of a hollow metal door. A bolt head protruding from the doorjamb plate is engageable with a slotted groove in the retaining plate. When the door is closed, the retaining engagement of the bolt head with the slotted groove of the retaining plate prevents an intruder from using a tool such as a crowbar to pry the door open.

REFERENCES:
patent: 3674296 (1972-07-01), Wanlass et al.
patent: 3831988 (1974-08-01), Stelma
patent: 4647091 (1987-03-01), Roubin
patent: 4702505 (1987-10-01), Alexander
patent: 4986576 (1991-01-01), Anderson

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