Patents by Inventor Norman A. Martinek

Norman A. Martinek 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).

  • Anti-shimmy caster wheel assembly using a speed sensor and braking action about the verticle axis
    Patent number: 4667365
    Abstract: A caster wheel assembly which uses a mechanical brake to apply force in order to prevent shimmying at high speeds. A controller arrangement provides that no braking force is supplied until the vehicle reaches a preset speed. Thereafter, a predetermined amount of force is applied to the brakes. The predetermined force is great enough to prevent shimmying but low enough to permit the caster wheel mounting member to continue to rotate about its axis so that the vehicle may continue to be maneuvered even at high speeds.
    Type: Grant
    Filed: February 24, 1986
    Date of Patent: May 26, 1987
    Assignee: M-B Company, Inc. of Wisconsin
    Inventor: Norman A. Martinek