Patents by Inventor Floyd C. Felderhoff

Floyd C. Felderhoff 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).

  • Low projection inserts for rock bits
    Patent number: 7600590
    Abstract: An earth boring bit has an outer row of inserts located within extra deep holes. Each of the holes has a cylindrical sidewall with a depth greater than the length of the barrel of the insert mounted within. The difference in depth is at least equal to a distorted entry zone in the hole. A portion of the sidewall that includes the entry zone surrounds the cutting end, reducing the projection of the cutting end from the land.
    Type: Grant
    Filed: August 15, 2005
    Date of Patent: October 13, 2009
    Assignee: Baker Hughes Incorporated
    Inventors: Floyd C. Felderhoff, Brian A. Baker, Rudolf C. Pessier, Jimmy W. Eason
  • ROTARY DRAG BIT WITH INCREASED BACK RAKE ANGLE GAUGE CUTTER
    Publication number: 20080190670
    Abstract: A fixed cutter rotary drill bit having gauge cutting elements at large back rake angles are disclosed. The gauge is located at the outer diameter side wall portion of the bit that extends from the cutting end. The gauge and its cutting components contact the side wall of the bore hole during drilling operations. The gauge cutting elements may be configured at a back rake angle in a range of about 40° to 70°.
    Type: Application
    Filed: February 11, 2008
    Publication date: August 14, 2008
    Applicant: BAKER HUGHES INCORPORATED
    Inventors: Robert M. Welch, Floyd C. Felderhoff, Michael L. Doster