Patents by Inventor Bernard F. Beaulier

Bernard F. Beaulier 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).

  • Multi-start wedge thread for tubular connection
    Patent number: 6158785
    Abstract: A threaded pipe connection includes a box member and a pin member. The box member has multiple internal, generally dovetail-shaped threads, each with stab flanks, load flanks, roots, and crests. The pin member also has multiple external, generally dovetail-shaped threads, each with stab flanks, load flanks, roots, and crests. The internal threads of the box member each increase in width in one direction, while the external threads of the pin member increase in width in the other direction so that the complementary flanks of the respective threads move into engagement upon make-up of the connection.
    Type: Grant
    Filed: August 6, 1998
    Date of Patent: December 12, 2000
    Assignee: Hydril Company
    Inventors: Bernard F. Beaulier, David L. Mallis