Security hinge

Details Security hinge Security hinge

1984-04-03

1986-01-21

Silverberg, Fred

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

Hinge

Including means to hold or retard hinged members against...

16349, E05D 1110

Patent

active

045649740

ABSTRACT:
A door or cabinet hinge which locks in one position--normally the closed position. It may be locked and unlocked from outside. Operated by a conventional keyed cylinder lock passing through the door and actuating an arm, the device has a lock pin parallel to and spaced outside the hinge pin. The lock pin moves along its axis to slide integral protruding keys into corresponding slots in the knuckles surrounding the hinge pin. In the unlocked position the keys lie entirely in one knuckle, in the locked position they span between knuckles and prevent rotation thereof. A yoke connects the actuating arm to the lock pin.

REFERENCES:
patent: 121309 (1871-11-01), Amos
patent: 485613 (1892-11-01), Deane
patent: 1868342 (1932-07-01), Yurkovitch
patent: 2045837 (1936-06-01), Creber
patent: 2757033 (1956-07-01), Noca
patent: 2900204 (1959-08-01), Pelcin
patent: 3744085 (1973-07-01), Griego
patent: 3874029 (1975-04-01), McCullough
patent: 4072331 (1978-02-01), Butterfield et al.

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