Security door hinge system with locking elements

Details Security door hinge system with locking elements Security door hinge system with locking elements

1986-01-09

1987-11-10

Silverberg, Fred

Miscellaneous hardware (e.g., bushing, carpet fastener, caster,

Hinge

Having prongs or cooperating structure on leaf

16DIG40, E05D 506

Patent

active

047047674

ABSTRACT:
An improved security door hinging system, wherein the door hinge comprises locking elements in the shape of circular posts on each hinge leaf. Lock engaging means in the form of apertures are located on the door and the door frame to engage the locking elements of the hinge. The locking elements and the lock engaging means cooperate when the door is in the closed position to secure the door to the door frame in the event the conventional mounting screws become inoperable, as when excessive force is applied to the door hinge area.

REFERENCES:
patent: 186105 (1877-01-01), Bristol
patent: 889798 (1908-06-01), Markey
patent: 1391304 (1921-09-01), Dowling
patent: 4085650 (1978-04-01), Flynn
patent: 4133114 (1979-01-01), Roach

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