Patents by Inventor William James Murray

William James Murray 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).

  • Pneumatic drifter with replaceable foot pieces
    Patent number: 7997351
    Abstract: Pneumatic drifters containing a drifter cylinder with removable feet and associated methods for using the pneumatic drifters are described. The removable feet are connected to feet pad of a drifter cylinder with multiple fasteners. The mating surfaces of the feet and the feet pad are provided with complimentary features that limit the shearing forces on the fasteners during operation of the drifter rock drill. The removable feet can be replaced quickly and easily without have to replace the entire drifter cylinder, thereby saving time and reducing costs. Other embodiments are also described.
    Type: Grant
    Filed: December 17, 2008
    Date of Patent: August 16, 2011
    Assignee: Longyear TM, Inc.
    Inventor: William James Murray
  • External water delivery system for rock drills
    Patent number: 7967084
    Abstract: An external water delivery system includes a water box front head, a collet configured to interface with the water box front head, a polymer sleeve configured to be positioned between the water box front head and the collet, a shank, and at least one seal positioned within the sleeve. The sleeve and seals are configured to provide a water chamber when coupled to the shank. An inner of the sleeve provides a bearing surface for the shank.
    Type: Grant
    Filed: January 21, 2009
    Date of Patent: June 28, 2011
    Assignee: Longyear TM, Inc.
    Inventor: William James Murray
  • EXTERNAL WATER DELIVERY SYSTEM FOR ROCK DRILLS
    Publication number: 20100059281
    Abstract: An external water delivery system includes a water box front head, a collet configured to interface with the water box front head, a polymer sleeve configured to be positioned between the water box front head and the collet, a shank, and at least one seal positioned within the sleeve. The sleeve and seals are configured to provide a water chamber when coupled to the shank. An inner of the sleeve provides a bearing surface for the shank.
    Type: Application
    Filed: January 21, 2009
    Publication date: March 11, 2010
    Applicant: LONGYEAR TM, INC.
    Inventor: William James Murray
  • PNUEMATIC DRIFTER WITH REPLACEABLE FOOT PIECES
    Publication number: 20090283284
    Abstract: Pneumatic drifters containing a drifter cylinder with removable feet and associated methods for using the pneumatic drifters are described. The removable feet are connected to feet pad of a drifter cylinder with multiple fasteners. The mating surfaces of the feet and the feet pad are provided with complimentary features that limit the shearing forces on the fasteners during operation of the drifter rock drill. The removable feet can be replaced quickly and easily without have to replace the entire drifter cylinder, thereby saving time and reducing costs. Other embodiments are also described.
    Type: Application
    Filed: December 17, 2008
    Publication date: November 19, 2009
    Applicant: Longyear TM, Inc.
    Inventor: William James Murray