The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 20, 2008
Filed:
Nov. 10, 2003
Magne Mathias Moe, Harstad, NO;
Magne Mathias Moe, Harstad, NO;
National Oilwell Norway AS, , NO;
Abstract
A tensioning device () for a riser () connecting a subsea borehole () with a floating installation () on the surface of the sea (), where the tensioning device () is provided with telescoping tubes (') and also several evenly spaced hydraulic cylinders (′) arranged in a peripherally encircling manner and mainly in the longitudinal direction of the riser, and where the tension in the riser is exerted through hydraulic pressure in said cylinder (′), the tensioning device () consisting of two successive, interconnected telescopic tensioning units (), the tensioning units () being designed separately to maintain a prescribed tension in the riser ().