Patents by Inventor Murray Penman Craigmile

Murray Penman Craigmile 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: 5984583
    Abstract: The present invention provides an apparatus and method for directional drilling and a method and apparatus for placing pipe in a directionally drilled bore. The present invention provides a launch tube which is placed into unstable soil. The tube is fitted with a unique cutting shoe which forces soil both into and out of the tube to prevent the tube from becoming obstructed. Preferably, the launch tube extends to bedrock or stable soil. Once the launch tube is placed a directional drill is moved through the tube and into the bedrock so that the bore may be directionally drilled in the bedrock. Once the bore is established a pipe, or a plurality of pipes, may be placed into the tube using known techniques.
    Type: Grant
    Filed: August 25, 1997
    Date of Patent: November 16, 1999
    Inventors: Murray Penman Craigmile, Michael Schwager