Patents by Inventor Sigurd A. Rishovd

Sigurd A. Rishovd 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).

  • Wheel alignment apparatus
    Patent number: 3963352
    Abstract: Wheel alignment apparatus for electrically indicating the alignment condition of a vehicle wheel in which there is sensing means, including an element adapted to be detachably secured to the wheel, for producing an electrical output dependent upon the extent of inclination of the wheel and an electrical display device having a movable member positioned in accordance with the electrical output of the sensing means. The sensing means is designed to selectively detect toe-in, camber, and caster.
    Type: Grant
    Filed: October 24, 1973
    Date of Patent: June 15, 1976
    Assignee: Royal Industries, Inc.
    Inventors: Sigurd A. Rishovd, Richard P. Vizenor