Patents by Inventor Thomas M. Stefanik

Thomas M. Stefanik 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).

  • Roller cone disk with shaped compacts
    Patent number: 8307920
    Abstract: An earth boring drill bit that includes a cutting cone with a cutting disk. Compacts are inserted within the disk having a chisel shaped end set flush with the cutting disk periphery. The compact crests and cutting disk periphery form a generally seamless cutting surface. The cutting cone can further include cutting teeth thereon also having flush mounted compacts. The compacts can be made from a material such as cemented carbide, hardfacing, tungsten, tungsten alloys, tungsten carbide and the cutter made from steel.
    Type: Grant
    Filed: August 13, 2009
    Date of Patent: November 13, 2012
    Assignee: Baker Hughes Incorporated
    Inventors: Robert J. Buske, James L. Overstreet, Thomas M. Stefanik, Shyam Anandampillai, Robert D. Bradshaw
  • ROLLER CONE DISK WITH SHAPED COMPACTS
    Publication number: 20110036639
    Abstract: An earth boring drill bit that includes a cutting cone with a cutting disk. Compacts are inserted within the disk having a chisel shaped end set flush with the cutting disk periphery. The compact crests and cutting disk periphery form a generally seamless cutting surface. The cutting cone can further include cutting teeth thereon also having flush mounted compacts. The compacts can be made from a material such as cemented carbide, hardfacing, tungsten, tungsten alloys, tungsten carbide and the cutter made from steel.
    Type: Application
    Filed: August 13, 2009
    Publication date: February 17, 2011
    Applicant: Baker Hughes Incorporated
    Inventors: Robert J. Buske, James L. Overstreet, Thomas M. Stefanik, Shyam Anandampillai, Robert D. Bradshaw