Patents Assigned to Kennametl Inc.
  • Roof drill bit, roof drill bit body and hard cutting insert for roof drill bit
    Patent number: 8002054
    Abstract: A roof drill bit has an elongate roof drill bit body, which has a forward end and a rearward end. The roof drill bit body contains a slot at the forward end. The roof drill bit body contains a dust port wherein the dust port has a central longitudinal dust axis. The roof drill bit further has a hard insert received within the slot wherein the hard insert has a leading surface. The leading surface of the hard insert is rotationally forward of the central longitudinal dust axis of the dust port.
    Type: Grant
    Filed: January 26, 2009
    Date of Patent: August 23, 2011
    Assignee: Kennametl Inc.
    Inventors: Chad A. Swope, Douglas E. Bise, Kris E. Strothmann, Tod D. Hill