Patents Assigned to S.p.A. Giuseppe Ratti Industria Ottica
  • Flexible bar for spectacle-frames
    Patent number: 4037946
    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.
    Type: Grant
    Filed: January 22, 1975
    Date of Patent: July 26, 1977
    Assignee: S.p.A. Giuseppe Ratti Industria Ottica
    Inventor: Oreste Blumenthal