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:
Aug. 26, 1997
Filed:
Nov. 03, 1995
Applicant:
Inventor:
Charles Sparks, Le Vesinet, FR;
Assignee:
Institut Francais du Petrole, Rueil Malmaison, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B / ; E21B / ;
U.S. Cl.
CPC ...
166367 ; 4051951 ; 4052242 ;
Abstract
A riser for great water depths includes a main tube, peripheral lines, and a base at the lower end of the main tube. The main tube has devices for holding the peripheral lines in position with respect to the main tube. The lower end of each of the peripheral lines is connected with another device placed on the base allowing axial relative movement of at least one of the peripheral lines with respect to the main tube. Also, the riser is provided with a damping device.