Patents by Inventor James Coffman

James Coffman 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).

  • Publication number: 20130299435
    Abstract: Described herein are refuse collection systems for removing, collecting and extracting refuse from water run-off.
    Type: Application
    Filed: September 22, 2011
    Publication date: November 14, 2013
    Inventors: Jeffrey Coffman, James Coffman, Frank Thomas, Joseph Glembocki, Lucas Corsbie
  • Publication number: 20050126822
    Abstract: The present invention discloses, in certain asp cts, systems and methods for producing cyclical impacts and, in certain aspects for moving a drilling apparatus for drilling a borehole in a formation, the system in certain embodiments including a housing with a longitudinal axis and a movable member movably disposed therein and movable within the housing transversely to the longitudinal axis of the housing and positioned within the housing with a first space on a first side thereof and a second space on a second side thereof, the movable member substantially fluidly isolating the two spaces and movable to compress gas in one of the first space and the second space while decompressing gas in the other space so that a charge of compressed gas exits from the housing to move an impact member; e.g. for impacting a pile to be driven into the earth or for impacting a drill apparatus for drilling a wellbore, the movable member movable continuously to provide a series of impacts.
    Type: Application
    Filed: December 11, 2003
    Publication date: June 16, 2005
    Inventors: Paul Campbell, James Coffman