Patents by Inventor Dana G. Knapp

Dana G. Knapp 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: 6065926
    Abstract: An adjustable fork tractor system is disclosed. The system includes a pair of adjustable forks having remote ends and having near ends with vertical support bars having lower ends attached to the forks adjacent to the near ends and having upper ends with angled support brackets coupling the support bars with the forks adjacent to their near ends. A supporting structure is provided and includes two vertically disposed beams with a horizontal connecting rod coupling the beams adjacent to their lower ends. A channel iron couples the upper ends of the beams. The channel iron has an upper edge with downwardly extending notches along the length thereof. There is provided a pair of rigid sleeves with central apertures slidably received on the rod and fixedly secured at the juncture of the forks and vertical support bars to allow the lateral sliding of the adjustable forks with respect to the rod and supporting structure.
    Type: Grant
    Filed: January 11, 1999
    Date of Patent: May 23, 2000
    Inventor: Dana G. Knapp