Patents by Inventor Pierre Billault

Pierre Billault 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).

  • Machines for surfacing lenses
    Patent number: 4135890
    Abstract: A machine for the surfacing of ophthalmic lenses has a working head in which a supporting finger is axially mounted on a pivotable arm. Pivoting of the arm causes the supporting finger to approach a working station. The arm carries actuating means for the supporting finger which control the approach of the finger towards the working station and control the pressure applied by the finger at the working station. In addition, damping means are provided for damping oscillation and vibrations of said supporting finger.
    Type: Grant
    Filed: September 30, 1977
    Date of Patent: January 23, 1979
    Assignee: Essilor International Cie Generale d'Optique
    Inventor: Pierre Billault