Resilent hinge for spectacles frame utilizing a knuckle which in

Details Resilent hinge for spectacles frame utilizing a knuckle which in Resilent hinge for spectacles frame utilizing a knuckle which in

1997-12-18

1999-11-02

Mai, Huy

Optics: eye examining, vision testing and correcting

Spectacles and eyeglasses

Connectors

16228, G02C 522

Patent

active

059756934

ABSTRACT:
The present invention relates to a resilient hinge which includes a front knuckle fixed to a front lug and an arm knuckle fixed to an arm. The two knuckles are connected by a hinge pin and have two contacting faces perpendicular to the hinge pin. The contacting face of one of the two knuckles has at least one raised portion with an oblique side interacting with one or more recessed portions of the contacting face of the other knuckle. The knuckles move in relation to each other along the connecting hinge pin and against the force exerted by a resilient device coaxial with the hinge pin when the raised portion leaves the recessed portions in the event of the arm rotating with respect to the front lug.

REFERENCES:
patent: 2624907 (1953-01-01), Graham
patent: 5589895 (1996-12-01), Mizuno

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