Patents by Inventor Paul M. Defourny

Paul M. Defourny 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).

  • Drilling bit assembly and apparatus
    Patent number: 6945338
    Abstract: A drill bit comprises a shank member (31), a bit body (32) provided with cutters (33) and flexible material (35) between the shank (31) and the bit body (32) allowing relative tilting movement therebetween to reduce adverse effects caused by vibration of the bit. In other embodiments, flexible material is provided between the bit body and the cutters. In further embodiments, the flexible material may be provided in a tiltable sub-assembly for incorporation in a drilling above the drill bit. An apparatus for simulating drilling conditions is also provided.
    Type: Grant
    Filed: January 30, 1995
    Date of Patent: September 20, 2005
    Assignee: Baroid Technology, Inc.
    Inventors: Paul M. Defourny, Fereidoun Abbassian