Spectacle frame having rotary members

Details Spectacle frame having rotary members Spectacle frame having rotary members

1996-03-29

1996-12-10

Mai, Huy

Optics: eye examining, vision testing and correcting

Spectacles and eyeglasses

Connectors

351121, 16228, G02C 522, G02C 514

Patent

active

055835880

ABSTRACT:
A spectacle frame includes two extensions extended from the side portions. A pulley and a cam are rotatably supported on each of the extensions. A pair of legs are secured to the cams as to be rotated in concert with the cams. The pulley and the cam each includes a peripheral slot for engaging with a ring which couples the pulley and the cam together. The extensions each includes a stop and a curved slot. The cam includes a rod slidably engaged in the curved slot. The rod may be moved against the ring such that the ring may apply a resilient force against the leg.

REFERENCES:
patent: 4269488 (1981-05-01), Zancaner

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