Patents by Inventor Hans Schaeff

Hans Schaeff 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).

  • Amphibious vehicle
    Patent number: 4176726
    Abstract: An amphibious vehicle including an undercarriage having pairs of front and rear primary wheels, a vehicle body mounted on the undercarriage, a propulsion device operable while the vehicle is afloat and including drive wheel means mounted on arms pivotally secured to the rear of the vehicle so that the height of the drive wheel means may be adjusted by pivoting the arms about a horizontal axis, the drive wheel means having a ribbed pattern thereon.
    Type: Grant
    Filed: June 6, 1978
    Date of Patent: December 4, 1979
    Assignee: HFM Hohenloher Fahrzeuge- und Maschinenvertrieb GmbH
    Inventor: Hans Schaeff