Patents by Inventor Per E. Lindovist

Per E. Lindovist 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).

  • Drive wheel adjuster for driverless vehicle
    Patent number: 4798147
    Abstract: A driverless vehicle having swivel-mounted support wheels which ride on track rails and at least first and second drive wheels adapted for frictional contact with a drive tube. The drive wheels are interconnected by a linkage permitting limited independent movement of the drive wheels through a track curve, and they are maintained in substantially synchronous angular orientations relative to the drive tube by means of a stationary cam and a follower mounted on one of the drive wheels or by means of a linkage interconnecting one of the support wheels with one of the drive wheels.
    Type: Grant
    Filed: April 22, 1987
    Date of Patent: January 17, 1989
    Assignee: SI Handling Systems, Inc.
    Inventors: Roger A. Pyle, Per E. Lindovist