Miscellaneous hardware (e.g. – bushing – carpet fastener – caster – Hinge – Including means to hold or retard hinged members against...
Patent
1985-12-16
1986-12-23
Crosby, Gene P.
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
046303332
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 clamping knuckle which fits into the space between the spaced-apart non-adjustable knuckles. The hinge pin is a unitary pin having non-circular end portions having a diameter which is larger than that of the circular cross-section intermediate portion. The inside diameter of the middle knuckle as molded is too small to receive the non-circular end portion of the hinge pin. During assembly, the inside diameter of the middle knuckle is extended to receive the non-circular end portion of the hinge pin. The frictional torque resistance on the knuckle is controlled by the middle clamping knuckle which is controlled by an adjustment screw. Some of the plastic material of the clamping knuckle is squeezed into the threads of the adjustment screw during tightening thereby to maintain the adjustment at its initially-set position.
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
Crosby Gene P.
Southco Inc.
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