Patents by Inventor Charles J. Ashdown

Charles J. Ashdown 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).

  • Ground anchors
    Patent number: 5522678
    Abstract: Apparatus and method of forming a ground anchor to spread evenly the loads produced during, for example, pipe lining. The ground anchors comprise a frame and means for clamping the frame to upper ends of a series of ground engaging piles such that the frame and piles define a substantially rigid assembly. The frame may comprise first and second frame portions through which the piles may be driven, the frame portions being held in spaced apart relationship during pile driving by temporary coupling means.
    Type: Grant
    Filed: April 18, 1994
    Date of Patent: June 4, 1996
    Assignee: Kelley Company, Inc.
    Inventors: George P. Marshall, Charles J. Ashdown