Patents by Inventor Holton G. Harders

Holton G. Harders 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: 3998063
    Abstract: Method and apparatus for removing construction piles in which a clamp mounted in a hollow head grips opposite sides of a pile, and the head is vibrated vertically by means of a vibrating hammer which is clamped to the head so that the head moves up and down as a unit with the hammer to loosen the pile. The vibrating hammer is suspended from a crane cable which, after loosening the pile, is raised to easily remove the pile. In commercial situations where many piles are to be removed from one area, it is preferred that the present invention be used to loosen the piles, leaving complete withdrawal of the piles to a conventional choker operated by a second crane which follows the first crane carrying the vibrating hammer and clamping head of the present invention.In one embodiment, the clamp head includes a generally hollow steel casing movable over the top of the pile to a point limited by a horizontal plate fixed across a top portion of the casing.
    Type: Grant
    Filed: February 17, 1976
    Date of Patent: December 21, 1976
    Inventor: Holton G. Harders