Patents by Inventor Raymond J. Drennen

Raymond J. Drennen 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).

  • X-Y position indicator for a display system
    Patent number: 4754103
    Abstract: An X-Y position indicator control for manual movement over any surface to move a cursor over a display on a cathode ray tube, the indicator control generating signals indicating its position to cause a cursor to be displayed on the tube at the corresponding position. The indicator control mechanism contains X-Y position wheels mounted with their axes in perpendicular planes, which rotate according to the X and Y movements of the mechanism. Each position wheel is mounted on a flexible shaft. Each position wheel is resiliently urged into contact with the surface by the flexible shaft.
    Type: Grant
    Filed: July 24, 1987
    Date of Patent: June 28, 1988
    Assignee: The Torrington Company
    Inventors: James De Bisschop, Raymond J. Drennen