Flexible bar for spectacle-frames

Details Flexible bar for spectacle-frames Flexible bar for spectacle-frames

1975-01-22

1977-07-26

Sacher, Paul A.

Optics: eye examining, vision testing and correcting

Spectacles and eyeglasses

Temples

351117, G02C 516, G02C 518

Patent

active

040379469

ABSTRACT:
A flexible element for spectacle-frames, in particular a flexible bar for spectacles, comprising a chain of articulated elements traversed by a deformable longitudinal core arranged to hold them together is described. The chain of articulated elements comprises at least one articulated element formed substantially by a portion of a body of revolution defined by surfaces which are obtained by envelope from a generating plane figure which is made to rotate about an axis parallel and external to the figure itself.

REFERENCES:
patent: 3052160 (1962-09-01), Ratti
patent: 3627406 (1971-12-01), Blumenthal
patent: 3796482 (1974-03-01), Blumenthal

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