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.

Date of Patent:
Apr. 06, 2010

Filed:

Sep. 26, 2005
Applicants:

Pierre-armand Thomas, Puteaux, FR;

Nicolas Tcherniguin, Paris, FR;

Inventors:

Pierre-Armand Thomas, Puteaux, FR;

Nicolas Tcherniguin, Paris, FR;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E02B 17/02 (2006.01);
U.S. Cl.
CPC ...
Abstract

An offshore oil-drilling rig comprising a deck mounted mobile on legs, each leg including a support base on the sea floor and a caisson open at its base and designed to penetrate into the sea floor. Each caisson is arranged inside the leg and is mobile along the axis of the leg between a retracted upper position and a projecting lower position at which it is anchored on the sea floor. The invention also concerns methods for installing such a rig on an oil-drilling site.


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