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. 08, 1989
Filed:
Jun. 17, 1988
Applicant:
Inventors:
Charles Sparks, Le Vesinet, FR;
Pierre Odru, Fontenay Sous Bois, FR;
Assignee:
Institut Francais du Petrole, Rueil Malmaison, FR;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
E02D / ; E02D / ;
U.S. Cl.
CPC ...
405224 ; 405195 ; 405202 ; 166367 ;
Abstract
A variable rigidity element is provided to surround and protect a riser or transfer column installed at a water bottom and extending usually to a platform associated with production of hydrocarbons. The element is composed of a number of shells which surround the riser and two or more concentric rings of shells may be provided. The shells, preferably made of metal, are shaped to avoid contact and have an ogive end remote from the bottom installation.