Patents by Inventor Per O. Finden

Per O. Finden 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).

  • Patent number: 4221273
    Abstract: A controllable, motor-driven undercarriage which comprises a first frame having non-driven castors and a second frame carrying driving wheels. The second frame can be turned relative to the first frame for changing the direction of the driving wheels and can be locked in any position relative to the first frame. The second frame is a two-armed lever which is pivotable about a central axis and at either end carries a driving wheel which is provided with an independently controllable driving means. The independently controllable driving-wheels are used both for the driving and steering of the undercarriage and for swinging the lever between different locked positions.
    Type: Grant
    Filed: March 7, 1978
    Date of Patent: September 9, 1980
    Assignee: Sentralinstitutt for Industriell Forskning
    Inventor: Per O. Finden