Patents by Inventor Joel M. Selman

Joel M. Selman 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).

  • Cylinder machine with improved spherical bearing
    Patent number: 4914865
    Abstract: An apparatus for lapping of ophthalmic lenses has a spherical bearing for supporting a rod, one end of which carries a lapping tool. The spherical bearing has a race and ball through which the rod is fixedly secured. The ball has a generally vertically extending channel facing the race and the race has a guide pin which slidably extends into the channel thus allowing the ball free pivotal but not free rotational movement with respect to the race.
    Type: Grant
    Filed: February 16, 1989
    Date of Patent: April 10, 1990
    Assignee: The Standard Products Company
    Inventors: Ronald C. Wiand, Joel M. Selman, Scott W. Stay