Patents by Inventor Donald R. Hayes

Donald R. Hayes 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).

  • Universal joint for multiple flowline system
    Patent number: 4311327
    Abstract: There is disclosed a universal joint for multiple flowline system wherein all of the conduits pass through the interior of the joint. The conduits whichpass through the universal joint on axes offset from the pivot axes of the joint are provided with flexing means which enable the offset conduit to rotate around a pivot axis of the universal joint when the joint is flexed.
    Type: Grant
    Filed: December 20, 1979
    Date of Patent: January 19, 1982
    Assignee: Exxon Production Research Company
    Inventors: John E. Ortloff, Clarence F. Stelzer, Jr., Donald R. Hayes