Patents by Inventor Christian Massard

Christian Massard has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Method and apparatus for bevelling or grooving ophthalmic lenses
    Patent number: 4612736
    Abstract: The peripheral edge of an ophthalmic lens is maintained in contact with a bevelling or grooving wheel while being rotated about an axis of the lens parallel to the axis of the bevelling wheel whereby a bevel or groove is formed in said peripheral edge. The ophthalmic lens is capable of relative axial displacement relative to said bevelling wheel. By way of a force or displacement sensor, the relative axial position of the ophthalmic lens with respect to the bevelling wheel can be made subject to the axial component of reaction forces generated between the lens and the bevelling wheel in their mutual contact zone.
    Type: Grant
    Filed: October 16, 1984
    Date of Patent: September 23, 1986
    Assignee: Essilor International Cie Generale d'Optique
    Inventors: Christian Massard, Alain Pierre, Jean-Louis Roumegoux