Patents by Inventor Robert Grabenstetter

Robert Grabenstetter 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).

  • Patent number: 6695336
    Abstract: Apparatus and methods are disclosed for transporting watercraft with pontoons, commonly referred to as“pontoon boats.” The apparatus broadly comprises an axle assembly and a hitch assembly. The axle assembly includes beam axle, a pair of wheels mounted for rotation about the beam axle, and a pair of pads or cradles spaced apart at a distance to receive the bottom portions of the pontoons. The hitch assembly is mounted relative to the lower surface of the deck, and includes a hitch bar extending from the front end of the deck which terminates in a cup-shaped receptacle to receive the ball hitch of the tow vehicle. To tow the boat, the cradles are preferably positioned under the craft to receive the bottom portions of the pontoons just rearward of the center of gravity to achieve an acceptable tongue weight on a level surface. The hitch assembly is preferably permanently mounted relative to the lower surface of the deck through welding, mechanical fasteners, or a combination thereof.
    Type: Grant
    Filed: November 13, 2002
    Date of Patent: February 24, 2004
    Inventor: Robert Grabenstetter