Patents by Inventor Veikko Levaaho

Veikko Levaaho 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).

  • Arrangement for detachable coupling of a trailer with pivoting wheels to a ball hitch of a vehicle
    Patent number: 4427212
    Abstract: The invention relates to an arrangement for detachable coupling of a trailer equipped with pivoting wheels to a ball hitch of a vehicle. At the forward end of the trailer there is a coupling receptacle to receive the ball hitch and a locking member to lock the ball hitch in the coupling receptacle. In order to prevent the trailer from rotating about a vertical axis through the ball hitch two opposing stops are fitted at the forward end of the trailer at such a distance from each other in the lateral direction that when the trailer is coupled to the ball hitch of the vehicle the stops bear against corresponding opposing stop faces at the rear end of the vehicle.
    Type: Grant
    Filed: March 3, 1982
    Date of Patent: January 24, 1984
    Assignee: Esko Poltto Oy
    Inventors: Veikko Levaaho, Esko K. Poltto