Security hinge with improved structural integrity with the elect

Details Security hinge with improved structural integrity with the elect Security hinge with improved structural integrity with the elect

1988-03-24

1989-06-20

Silverberg, Fred A.

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

Hinge

With diverse art portion or attachment

439 31, E05D 306

Patent

active

048399396

ABSTRACT:
An improved security hinge is provided in which security control wires pass through only one or two knuckles of a hinge whereby improved structural integrity of the hinge is achieved. Slots are cut through the body of the hinge which extend only part way through the thickness of the body of the hinge, and which are located between fastener openings whereby the integrity of the body of the hinge is not impaired. Furthermore, the security control wires extend through only one or two knuckles of the hinge, leaving one or more knuckles undisturbed, whereby the structural integrity of the knuckle portion of the hinge is not impaired. In an alternative embodiment, a hollow sleeve is formed from hardened steel through which the security control wires pass, whereby even greater structural integrity is achieved.

REFERENCES:
patent: 612192 (1898-10-01), Chandler
patent: 3857625 (1974-12-01), Crane et al.
patent: 4116514 (1978-09-01), Lawrence
patent: 4168409 (1979-09-01), McNinch
patent: 4412711 (1983-11-01), Suska

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