Adjustable friction hinge

Details Adjustable friction hinge Adjustable friction hinge

1983-06-30

1985-01-01

Silverberg, Fred A.

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

Hinge

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

16342, 16386, 16DIG13, E05D 1108

Patent

active

044908849

ABSTRACT:
An adjustable friction hinge assembly of thermoplastic material comprises a first hinge leaf having spaced apart non-adjustable knuckles having non-circular through holes, and a second hinge leaf having a single knuckle which fits into the space between the spaced-apart non-adjustable knuckles. The hinge pin has non-circular portions which are received with the corresponding non-circular through holes of said spaced-apart knuckles, and which prevent rotation of said hinge pin in said knuckles. The inside diameter of the middle knuckle is adjustable by an adjustment screw, thereby to control the frictional torque resistance of the knuckle on the hinge pin. Provision is made for squeezing some of the plastic material into the threads of said adjustment screw, thereby to maintain the adjustment at its initially set position despite repeated openings and closings of the hinged door, cover or lid.

REFERENCES:
patent: 1033582 (1912-07-01), Harris
patent: 1175560 (1916-03-01), Rixson
patent: 1922365 (1933-08-01), Heasley
patent: 2602957 (1952-07-01), Anderson
patent: 2929093 (1960-03-01), Conlee
patent: 3593364 (1971-07-01), Lia
patent: 3703742 (1972-11-01), Konishi
patent: 4175315 (1979-11-01), Hayes, Sr. et al.

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