Patents by Inventor James D. Pile

James D. Pile 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).

  • Drill bit with radially expandable cutter, and method of using same
    Patent number: 7686103
    Abstract: A drill bit having a body with a stationary cutter and a rotatable cutter such that in a first position the rotatable cutter does not radially extend beyond a periphery of the stationary cutter and in a second position the rotatable cutter radially extends beyond the periphery of the stationary cutter.
    Type: Grant
    Filed: June 6, 2007
    Date of Patent: March 30, 2010
    Assignee: San Juan Coal Company
    Inventor: James D. Pile
  • Use Of Foam To Increase Resistance To Gas Flow In Mine Applications And Apparatus For Delivering Same
    Publication number: 20090033140
    Abstract: A process for increasing resistance to the flow of gas in underground mining operations includes providing a foam composition at desired selected locations to create a barrier to the flow of gas.
    Type: Application
    Filed: July 31, 2008
    Publication date: February 5, 2009
    Inventors: James D. Pile, Nigel R. Goff, Stephen L. Bessinger
  • Drill Bit
    Publication number: 20080302577
    Abstract: A drill bit having a body with a stationary cutter and a rotatable cutter such that in a first position the rotatable cutter does not radially extend beyond a periphery of the stationary cutter and in a second position the rotatable cutter radially extends beyond the periphery of the stationary cutter.
    Type: Application
    Filed: June 6, 2007
    Publication date: December 11, 2008
    Inventor: James D. Pile