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:
Feb. 22, 2022
Filed:
May. 28, 2019
Applicant:
Acergy France Sas, Suresnes, FR;
Inventor:
Gregory Alexandre Toguyeni, La Garenne-Colombes, FR;
Assignee:
Acergy France SAS, Suresnes, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B23K 20/12 (2006.01); B23K 101/10 (2006.01);
U.S. Cl.
CPC ...
B23K 20/129 (2013.01); B23K 2101/10 (2018.08);
Abstract
A method of sealing a hole in a wall of a hollow structure comprises providing a sealed chamber that is external to the structure and that is in fluid communication with an internal space of the structure via the hole. The structure may be a pipe-in-pipe structure and the internal space may be an annulus between outer and inner pipes. Fluid flows through the hole into or out of the chamber as the pressure and/or composition of fluid in the internal space is adjusted. Then, a plug is spun and friction-welded into the hole. The plug is inserted into the hole from within the chamber.