Patents by Inventor William Leslie Jones

William Leslie Jones 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).

  • Bit retention device for a bit and chuck assembly of a down-the-hole, percussive drill
    Patent number: 5699867
    Abstract: A bit retention device for a bit and chuck assembly of a down-the-hole, percussive drill, for retaining a head section of a bit should the head section separate from a shank of the bit includes a chuck adapted for threadable connection to a drill casing, a drill bit, a bit retaining shoulder in the the assembly; a wear collar concentric about the chuck and bit and a flexible retaining member removably connected to the assembly, the retaining member extending radially between the wear collar and bit a sufficient distance to contact the retaining shoulder should the bit drop axially downwardly.
    Type: Grant
    Filed: July 31, 1996
    Date of Patent: December 23, 1997
    Assignee: Ingersoll-Rand Company
    Inventor: William Leslie Jones
  • Bit retention device for a bit and chuck assembly of a down-the-hole percussive drill
    Patent number: 5647447
    Abstract: A bit retention device for a bit and chuck assembly of a down-the-hole, percussive drill, for retaining a head section of a bit should the head section separate from a shank of the bit includes a chuck adapted for threadable connection to a drill casing, a drill bit, a bit retaining shoulder in the the assembly; a wear collar concentric about the chuck and bit and a flexible retaining member removably connected to the assembly, the retaining member extending radially between the wear collar and bit a sufficient distance to contact the retaining shoulder should the bit drop axially downwardly.
    Type: Grant
    Filed: June 10, 1996
    Date of Patent: July 15, 1997
    Assignee: Ingersoll-Rand Company
    Inventor: William Leslie Jones
  • Drive pin for a bit and chuck combination in a percussion drilling machine
    Patent number: D393475
    Type: Grant
    Filed: June 7, 1996
    Date of Patent: April 14, 1998
    Assignee: Ingersoll-Rand Company
    Inventor: William Leslie Jones