Patents by Inventor Dean T. Higgins

Dean T. Higgins 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).

  • Extended drill bit nozzle having side discharge ports
    Patent number: 4784231
    Abstract: A replaceable fluid nozzle is provided for well hole drill bits. The nozzle includes a main discharge port directed downward between adjacent cutting cones of the drill bit, and two side discharge ports directed toward the leading and trailing cutter cone backfaces, respectively. The side discharge ports direct jets of drilling fluid to wash away formation fines and shale packings from around the cutter cone bearing seals. The side jets of fluid remove abrasive particles to prolong the life of the cutter cone bearings and seals.
    Type: Grant
    Filed: August 7, 1987
    Date of Patent: November 15, 1988
    Assignee: Dresser Industries, Inc.
    Inventor: Dean T. Higgins