Patents by Inventor David K. ‘Keith’ Luce

David K. ‘Keith’ Luce 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).

  • Patent number: 7891443
    Abstract: A rotary cone earth boring bit has at least one bit leg with a cone retaining ball passage that intersects an outer surface of the bit leg and is closed by a ball plug. An upwardly curved lower hardfacing bead is on the outer surface of the bit leg at least partially below the ball plug. A downwardly curved upper hardfacing bead is on the outer surface of the bit leg at least partially above the ball plug. The upper hardfacing bead has leading and trailing ends that join the lower hardfacing bead. The upper and lower hardfacing beads define a generally elliptical perimeter surround the ball plug. At least one transverse bead is above the upper hardfacing bead and leads generally upwardly and circumferentially from a leading edge of the bit leg to a trailing edge of the bit leg.
    Type: Grant
    Filed: February 15, 2008
    Date of Patent: February 22, 2011
    Assignee: Baker Hughes Incorporated
    Inventors: Alan J. Massey, David K. ‘Keith’ Luce, Keith L. Nehring