Seafloor-surface coupling device

Details Seafloor-surface coupling device Seafloor-surface coupling device

2008-07-22

2008-07-22

Mayo, Tara L. (Department: 3671)

Hydraulic and earth engineering

Marine structure or fabrication thereof

With anchoring of structure to marine floor

C405S211000, C166S367000

Reexamination Certificate

active

10566893

ABSTRACT:
The present invention relates to a bottom-to-surface connection device comprising at least one undersea pipe or riser (1, 1a-1b) capable of including a single float (2, 21-27), said float being connected at its bottom end to a junction device (8) creating a leaktight flexible joint between the bottom end of the float (2) and said riser (1a), the connection device being characterized in that said junction device (8) is interposed between and secured to a bottom portion (1a) of the riser going down to the sea bottom and a top portion of the riser passing through said float and rising to the surface, said junction device (8) comprising at least one first laminated abutment in the form of a body of revolution having a plurality of elastomer layers defining surfaces of revolution that are frustoconical in shape or ellipsoidal in section.

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patent: WO01/04454 (2001-01-01), None
patent: WO0101184 (2001-02-01), None
patent: WO0153651 (2001-07-01), None

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