Patents by Inventor David W. Krueger

David W. Krueger 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).

  • Endless track attachment for a wheeled vehicle
    Patent number: 4635740
    Abstract: The present invention is directed to an attachment for converting a three or four wheel recreational vehicle to a tracked vehicle. An auxiliary frame supported by a pair of auxiliary wheels is attached to lower and upper members of the main frame of the vehicle such that the rear wheels of the vehicle are unweighted thereby shifting weight to the auxiliary wheels and the front wheel or wheels. Tracks are installed on each pair of a rear wheel and auxiliary wheel.
    Type: Grant
    Filed: January 31, 1985
    Date of Patent: January 13, 1987
    Inventors: David W. Krueger, Raymond A. Yerigan