Patents by Inventor Raymond T. Blythe

Raymond T. Blythe 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).

  • Snap over lens assembly
    Patent number: 4717882
    Abstract: A rotatable one-piece lens assembly that may be rotated relative to the instrument housing comprising a lens boss, integral with the lens, moving with the rotated lens to move the pointer to engage and test the switches. After the switch test the lens may then be rotated back to its normal position. In this manner the switches are tested without removing the lens from the instrument housing.
    Type: Grant
    Filed: September 25, 1985
    Date of Patent: January 5, 1988
    Assignee: Qualitrol Corporation
    Inventors: David L. Billings, Raymond T. Blythe