Patents by Inventor Michael D. Biggs

Michael D. Biggs 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).

  • Alleviating vortex shedding stress problems
    Patent number: 4648469
    Abstract: A method of alleviating problems with high stresses above fatigue failure levels due to vibrations modes caused by vortex shedding during the lowering and jetting-in of a large diameter surface string in deep water having a current characterized by the inclusion of a moment reducing device in the suspension conduit holding the surface string of conduit during lowering and jetting-in. Also disclosed are preferred embodiments where the moment reducing device is either a ball joint or a flex joint.
    Type: Grant
    Filed: September 24, 1985
    Date of Patent: March 10, 1987
    Assignee: Atlantic Richfield Company
    Inventors: Michael D. Biggs, Frank J. Schuh