Patents by Inventor Dwight F. Devorak

Dwight F. Devorak 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).

  • Trailer hitch having a winch coupling assist
    Patent number: 4466632
    Abstract: A highway trailer hitch having a trailer connector secured to one end of a cable with the other end of the cable extending through a guide and support sleeve and mounted on a cable drum. A crank powers the cable drum to reel in cable and the attached trailer connector to provide a coupling assist for connecting a trailing vehicle to a towing vehicle.
    Type: Grant
    Filed: November 18, 1982
    Date of Patent: August 21, 1984
    Inventor: Dwight F. DeVorak
  • Mobile spreader apparatus drive system
    Patent number: 4283014
    Abstract: A mobile wheel mounted spreader apparatus has a material feed conveyor and a broadcast spreading impeller fan. A wheel driven drive train operates through a gear reducer to drive the conveyor at a speed proportional to the towed speed of the spreader apparatus and operates through a hydraulic system, to drive the impeller fan at a constant speed regardless of variations in the towed speed of the spreader apparatus.
    Type: Grant
    Filed: April 9, 1979
    Date of Patent: August 11, 1981
    Inventor: Dwight F. Devorak