Floating structure having anchor lines comprising damping means

Details Floating structure having anchor lines comprising damping means Floating structure having anchor lines comprising damping means

2005-09-06

2005-09-06

Safavi, Michael (Department: 3673)

Ships

Floating platform

C405S219000, C405S224000

Reexamination Certificate

active

06938571

ABSTRACT:
A floating structure (1), such as a mooring buoy, moored to the seabed (2) via anchor lines (3,4) that comprise an anchor line section (9,10) which is stretchable in its length direction, such as a polyester line. A water-resistant element (7,8) is connected at or near the upper end of at least one of the stretchable anchor line sections (9,10) for resisting displacement in the length direction of the anchor lines (3,4). Preferably the water-resistance element (7,8) is connected to the floating structure (1) via a substantially non-stretchable anchor line section (5,6), such as chain section. The floating structure (1) can be moored in deep water, and reduces fatigue weakening of the floating structure (1) and of the anchor lines (3,4).

REFERENCES:
patent: 1341677 (1920-06-01), Roberts
patent: 3327780 (1967-06-01), Knapp et al.
patent: 3986471 (1976-10-01), Haselton
patent: 4065822 (1978-01-01), Wilbourn
patent: 4470724 (1984-09-01), Pollack
patent: 2 066 291 (1981-07-01), None
McKenna, H. “Synthetic Fibers can Aid Deepwater Mooring,” vol. 47, No. 11, pp. 35-36, XP002072531, Petroleum Publishing Co., Tulsa, OK, USA.
Irish, James et al. “Elastic Tether Technology for Shallow Water Moorings in Harsh Environments: Results from Georges Bank,” Proc. of the Ocean Engineering in the Environment Conference, Oceans, IEEE, 1996, pp. 635-639, XP000725509, New York, NY, US.
Abstract of Japanese Patent 56-116588, Sep. 1981.

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