Patents by Inventor Dave Howerton

Dave Howerton 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).

  • Blast hole liner
    Patent number: 7950328
    Abstract: A borehole liner comprising a continuous length of polymer tubing of alternating diameters forming undulations sized for creating undulations in the liner to optimize the annular air gap alternating with full bore hole diameter loads of explosive to effectively reduce overall explosives consumption by 1-20%. Explosive charge weights can be modified to meet the users needs without introducing inert materials or other more labor intensive alternative.
    Type: Grant
    Filed: December 10, 2007
    Date of Patent: May 31, 2011
    Inventor: Dave Howerton
  • Blast hole liner
    Publication number: 20090145322
    Abstract: A borehole liner comprising a continuous length of polymer tubing of alternating diameters forming undulations sized for creating undulations in the liner to optimize the annular air gap alternating with full bore hole diameter loads of explosive to effectively reduce overall explosives consumption by 1-20%. Explosive charge weights can be modified to meet the users needs without introducing inert materials or other more labor intensive alternative.
    Type: Application
    Filed: December 10, 2007
    Publication date: June 11, 2009
    Inventor: Dave Howerton