Ram style tensioner with fixed conductor and floating frame

Details Ram style tensioner with fixed conductor and floating frame Ram style tensioner with fixed conductor and floating frame

2008-01-08

2009-12-15

Lagman, Frederick L (Department: 3672)

Hydraulic and earth engineering

Marine structure or fabrication thereof

With anchoring of structure to marine floor

Reexamination Certificate

active

07632044

ABSTRACT:
A riser tensioner for an offshore floating platform has a frame stationarily mounted to the upper portion of the riser. Pistons and cylinders are spaced circumferentially around the riser and connected between the frame and the floating platform. A tubular guide member is mounted to the floating platform for movement in unison in response to waves and currents. The riser extends through the guide member. A guide roller support is mounted to and extends downward from the frame around the guide member. At least one set of guide rollers is mounted to the guide roller support in rolling engagement with the guide member as the guide member moves in unison with the platform.

REFERENCES:
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patent: 5551803 (1996-09-01), Pallini, Jr. et al.
patent: 6746182 (2004-06-01), Munk et al.
patent: 7112011 (2006-09-01), McCarty et al.
patent: 7329070 (2008-02-01), Trent et al.
patent: 2005/0074296 (2005-04-01), McCarty et al.
patent: 2005/0123359 (2005-06-01), McCarty et al.
patent: 2005/0147473 (2005-07-01), Pallini et al.
patent: 2007/0048094 (2007-03-01), Mao et al.
patent: 2008/0205992 (2008-08-01), Ellis et al.

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