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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.:

US 10357910 B1

PDFFull Text
Date of Patent:
Jul. 23, 2019

Filed:

Oct. 30, 2014

Techniques for coating pipes

Applicant:

Subsea 7 Limited, Sutton, GB;

Inventors:

Philippe Benoit Jacques Hoffmann, Rousset-les-Vignes, FR;

Mike Gordon, Godalming, GB;

Nicolas Monfort-Moros, London, GB;

Sylvain Popineau, London, GB;

Assignee:

Subsea 7 Limited, Sutton, GB;

Attorney:

Levy & Grandinetti

Primary Examiner:

Nahida Sultana

Int. Cl.
CPC ...
B29C 45/17 (2006.01); B29C 45/26 (2006.01); F16L 58/18 (2006.01); F16L 59/20 (2006.01); F16L 1/20 (2006.01); B29C 45/14 (2006.01); B29C 45/43 (2006.01); B29C 45/73 (2006.01); B29L 23/00 (2006.01); B29C 45/72 (2006.01); B29L 9/00 (2006.01); B29C 45/56 (2006.01); B29K 23/00 (2006.01); B29K 25/00 (2006.01); B29K 105/00 (2006.01); B29K 105/20 (2006.01); B29K 705/12 (2006.01);
U.S. Cl.
CPC ...
B29C 45/174 (2013.01); B29C 45/14598 (2013.01); B29C 45/14622 (2013.01); B29C 45/1734 (2013.01); B29C 45/261 (2013.01); B29C 45/43 (2013.01); B29C 45/7331 (2013.01); F16L 1/206 (2013.01); F16L 58/181 (2013.01); F16L 59/20 (2013.01); B29C 45/561 (2013.01); B29C 45/7207 (2013.01); B29C 2045/14893 (2013.01); B29C 2045/1707 (2013.01); B29K 2023/12 (2013.01); B29K 2025/06 (2013.01); B29K 2105/0058 (2013.01); B29K 2105/20 (2013.01); B29K 2705/12 (2013.01); B29K 2995/0015 (2013.01); B29L 2009/003 (2013.01); B29L 2023/22 (2013.01); B29L 2023/225 (2013.01);
Abstract

A thermoplastics injection molding process coats a field joint of a pipeline by positioning a mold tool around the field joint to define a mold cavity. Thermoplastics material injected into the mold cavity forms a field joint coating that will set in the mold cavity. As the thermoplastics material shrinks in the mold cavity while the field joint coating sets, compacting pressure is applied radially inwardly within the mold cavity against a radially outer side of the field joint coating. A compacting fluid introduced into the mold cavity between the mold tool and the field joint coating may be used to apply pressure against the field joint coating. This accelerates and controls cooling of the field joint coating while maximizing quality.

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