Device and method for maintaining and guiding a riser, and method for transferring a riser onto a floating support
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United States of America Patent
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Jan 6, 2004
Grant Date -
N/A
app pub date -
Mar 5, 2002
filing date -
Aug 9, 1999
priority date (Note) -
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Abstract
An apparatus for holding and guiding a floating riser relative to a floating support. The apparatus includes a guidance mechanism secured to the floating support for enabling the riser to rotate about a horizontal axis perpendicular to a longitudinal axis of the riser; and for enabling the riser to slide longitudinally along the longitudinal axis and lateral displacement of the riser to be guided in a horizontal plane perpendicular to the longitudinal axis of the riser. The guidance mechanism includes friction pads mounted on a pad support for enabling the pads to pivot. The pads preferably cooperate with wheels such that the wheels bear against the riser and enable it to slide, and the riser comes to bear against the pads only when the wheels are moved away under the effect of lateral displacements of the riser.
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