Patents by Inventor Emil E. Dopyera

Emil E. Dopyera 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).

  • Swivel coupling element
    Patent number: 4618173
    Abstract: A swivel coupling element for use in sealingly coupling a tubular element to an annular coupling flange.
    Type: Grant
    Filed: October 17, 1984
    Date of Patent: October 21, 1986
    Assignee: Big-Inch Marine Systems, Inc.
    Inventors: Emil E. Dopyera, Jack E. Miller
  • Swivel coupling element
    Patent number: 4530526
    Abstract: A swivel coupling element for use in sealingly coupling a tubular element to an annular coupling flange.
    Type: Grant
    Filed: July 21, 1983
    Date of Patent: July 23, 1985
    Assignee: Big-Inch Marine Systems, Inc.
    Inventors: Emil E. Dopyera, Jack E. Miller
  • Swivel coupling element
    Patent number: 4381871
    Abstract: A swivel coupling element for use in sealingly coupling a tubular element to an annular coupling flange.
    Type: Grant
    Filed: October 14, 1980
    Date of Patent: May 3, 1983
    Inventors: Emil E. Dopyera, Jack E. Miller
  • Locking slip joint and method of use
    Patent number: 4178020
    Abstract: A locking slip joint has primary utility in the making up of a tie-in in pipeline laying and repair operations. In a preferred embodiment the slip joint comprises an inner sleeve telescopically received within an outer sleeve. Means for locking the sleeves together is disposed in an annulus between the sleeves and comprises a seal ring having annular teeth in communication with both sleeves. A pair of opposed tapered annular pistons engage mating recesses in the seal ring and are hydraulically actuated to deform the seal ring outwardly thereby embedding the teeth into both sleeves. The embedment provides an irreversible metal-to-metal seal.
    Type: Grant
    Filed: December 15, 1977
    Date of Patent: December 11, 1979
    Assignee: Big-Inch Marine Systems, Inc.
    Inventor: Emil E. Dopyera