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US 6,764,365 B2Granted
Buoyancy control systems for tubes
AssigneeFiberspar Corporation
InventorsPeter A. Quigley, Stephen C. Nolet, Thomas W. Wideman
Life of this patent
Estimating the term…
Abstract
Buoyancy control systems for tubes are described. In one embodiment, a buoyancy control system can include a composite tube and a buoyancy control material for controlling the buoyancy of the composite tube. The composite tube can include an internal liner an external coaxial composite layer of fibers embedded in a matrix. One or more portions of the buoyancy control material can be attached to one or more portions of the composite tube to adjust the buoyancy of the one or more portions of the tube.
Claims20
A system comprising:
- a composite tube including an internal liner and an external coaxial composite layer of fibers embedded in a matrix, and
- a buoyancy control material for controlling the buoyancy of the composite tube, one or more portions of the buoyancy control material being attached to one or more portions of the composite tube to adjust the buoyancy of the one or more portions of the tube.
A system comprising:
- a tube,
- two or more buoyancy control materials, two or more of the two or more buoyancy control materials having different buoyancy characteristics, and
- one or more pumps for displacing the two or more buoyancy control materials in the tube to adjust the buoyancy of the tube to have different buoyancies at two or more locations in the tube.
Dependencies are inferred from the claim text.