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US 4,057,082 AGranted
Pipelines
AssigneeThe British Petroleum Company p.l.c.
InventorRobert Paul King
Life of this patent
Estimating the term…
Abstract
A leak repair apparatus for use on an underwater pipeline has a compressible sealing element and a clamp which by means of screws and chains (passing around the pipeline) applies pressure to the sealing element to seal the leak.
Claims2
An apparatus for the repair of a pipeline having a hole in the wall thereof and suitable for withstanding an internal pipeline pressure of up to 3000 psi comprising:
- a. a compressible sealing element;
- b. a holder for holding the sealing element against the outer surface of the wall of the pipeline;
- c. means for applying pressure to the sealing element radially inwardly with respect to the pipeline to compress the sealing element against the surface thereof around the hole and for maintaining the holder on the pipeline against the reaction of the applied pressure comprising an elongate flexible member to be placed around the pipeline and holder and capable of being tensioned and means for applying tension to the elongate flexible member;
- and
- d. means to prevent extrusion of the sealing element comprising a ring of rods disposed so that their axes are lying mutually parallel and their inner ends contact the pipeline surface around the sealing element within the holder.
2 more elements
Dependencies are inferred from the claim text.