Patents by Inventor Alan S. Rackham

Alan S. Rackham 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).

  • Compactor device for hydraulic hammer
    Patent number: 8021079
    Abstract: A compactor device for attaching to a shaft of a hydraulic hammer or the like comprising a base, an outer receiving tube and inner receiving component attached to the top of the base, wherein the inner receiving component is for clamping onto the shaft of the hydraulic hammer. The compactor device is for compacting all materials, such as dirt, sand, and/or aggregate material.
    Type: Grant
    Filed: January 29, 2009
    Date of Patent: September 20, 2011
    Inventor: Alan S. Rackham