Patents by Inventor Perley F. Simmons

Perley F. Simmons 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).

  • Cathode ray tube screen exposure system
    Patent number: 4256390
    Abstract: The invention relates to an improvement in the photo-exposure system utilized in the forming of stripe-patterned screens on the viewing panels of color cathode ray tubes. The versatile system incorporates an adjustable electronically controlled cam arrangement for achieving desired oscillation of the exposure light source. A cam associated multi-apertured control disk initiates a pre-determined number of pulses which accurately control the degree of cam movement and resultant light source oscillation.
    Type: Grant
    Filed: March 20, 1980
    Date of Patent: March 17, 1981
    Assignee: GTE Products Corporation
    Inventors: Gary J. Fisher, James E. Morean, Perley F. Simmons, Steven N. VanGorden