Patents Assigned to ABB VectoGray Inc.
  • Antirotation device for subsea wellheads
    Patent number: 5290126
    Abstract: A subsea well assembly has an antirotation device to prevent rotation of an inner wellhead housing within an outer wellhead housing. A number of slots are formed in the upper rim of the outer wellhead housing. The slots have open upper ends. A number of pins are mounted to the exterior of the inner wellhead housing. Guide surfaces extend upward from the slots to guide the pins as the inner wellhead housing is lowered into the outer wellhead housing. The pins locate in the slots to prevent rotation.
    Type: Grant
    Filed: December 13, 1991
    Date of Patent: March 1, 1994
    Assignee: ABB VectoGray Inc.
    Inventors: James A. Gariepy, Rodolfo Z. Lugo, B. Lee Danner