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An spring hinge construction comprising a pair of hinge leaves having hollow knuckle portions axially aligned to form a hinge barrel containing a torsion spring. A pintle in each end of the barrel operatively engages an adjacent end of the spring to fix it against relative rotation. One pintle is fi

An spring hinge construction comprising a pair of hinge leaves having hollow knuckle portions axially aligned to form a hinge barrel containing a torsion spring. A pintle in each end of the barrel operatively engages an adjacent end of the spring to fix it against relative rotation. One pintle is fixed, through a leaf knuckle, to one hinge leaf, and the other pintle is rotationally adjustable to set a desired torsion on the spring, after which it is fixed against counter-rotation by means of a loose pin which is inserted through an elongate slot in a knuckle of the other leaf and into a selected radial passageway opening in the pintle which aligns with the end of the slot. An anti-friction bushing and thrust washer carried by the adjustable pintle and located between opposed surfaces of adjacent knuckles, respectively, cooperate to provide positive securement of the adjustable pintle in the hinge barrel while permitting its free rotation therein, and corresponding free smooth relative movement of the hinge knuckles during use of the hinge.

대표청구항 ▼

A spring hinge comprising a pair of hinge leaves having hollow knuckles on adjacent edges located in end to end axial alignment to form a hollow hinge barrel, first and second pintles positioned in respective ends of the hinge barrel and extending into and between axially aligned knuckles of adjacen

A spring hinge comprising a pair of hinge leaves having hollow knuckles on adjacent edges located in end to end axial alignment to form a hollow hinge barrel, first and second pintles positioned in respective ends of the hinge barrel and extending into and between axially aligned knuckles of adjacent leaves to maintain them in axial alignment during their relative movement, means fixing said first pintle to a knuckle of one of said pair of said hinge leaves to prevent relative rotational movement therebetween, a torsion spring located in said hollow barrel and extending between said first and second pintles, said spring having each of its end portions operatively connected to a respective adjacent pintle to prevent relative rotation therebetween, a bushing carried on a reduced diameter portion of the peripheral surface of said second pintle and extending axially therealong to engage the inner surfaces of adjacent knuckles, said bushing having a circumferential groove on its outer surface, a resiliently deformable thrust washer positioned between the adjacent ends of said adjacent knuckles in circumferentially surrounding relation to said bushing, said washer having an internal diameter which is less than the internal diameter of said barrel and the external diameter of the bushing adjacent its groove to reside in said bushing groove and thereby retain said second pintle in said barrel while permitting its rotational movement about the axis of the same, and means for adjustably rotatably positioning said second pintle and fixing it against rotation in one direction relative to a knuckle of the other of said pair of hinge leaves whereby the torsional force exerted by said spring between said pair of hinge leaves may be adjusted.