Door security system

Details Door security system Door security system

1993-09-24

1995-06-27

Lindsey, Rodney M.

Closure fasteners

Extension link

Chain

292145, 292346, 292DIG17, E05C 1736

Patent

active

054274222

ABSTRACT:
A door security system that includes an interior component system, an exterior component system, a hinge screw component, and a door striker component. The interior system consists of a pair of plates, one mounted on the door and the other mounted on the door jamb. Each plate includes a flanged portion having a pair of apertures. A bolt consisting of a rod and a hook is inserted through one aperture of each plate to secure the door to the door assembly. A chain and hook system is connected between the other two apertures of the respective plates. When only the chain is used, the door can be safely opened partially to preview the prospective visitor. The exterior component consists of a flanged plates wherein a flanged portion is designed to fit into a corresponding slot in the door jamb to inhibit forceful entry into the dwelling. The hinge screw components includes a screw having a threaded portion and a protrusion member. The screw of a traditional hinge is replaced with the hinge screw to prevent a closed door from being removed from their hinges when the hinge pins are removed. The door striker component reinforces the drivein style of dead bolts by supporting the outer edge of the bolt collar.

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patent: 4725084 (1988-02-01), Catricola
patent: 4832388 (1989-05-01), Lozano
patent: 5080354 (1992-01-01), McDougall

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