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:
Nov. 24, 1981
Filed:
Jun. 06, 1979
Philippe C Nobileau, Neuilly sur Seine, FR;
Rene M Dermy, Courcouronnes, FR;
Guy J Fleury, Paris, FR;
Compagnie Francaise des Petroles, Paris, FR;
Etudes Petrolieres Marines, Paris, FR;
Ateliers et Chantiers de Bretagne - A.C.B., Nantes, FR;
Compagnie Maritime d'Expertises, Marseilles, FR;
Compagnie Generale pour les Developpements Operationnels des Richesses, , US;
Societe Nationale Elf Aquitaine (Production), Courbevoie, FR;
Abstract
A method of welding the ends of submerged pipes in a gaseous atmosphere at any depth comprises isolating the ends of the pipes by introducing obturators therein and then introducing the pipe ends into an open topped receptacle which is capped with an underwater personal carrying intervention unit. The closed receptacle is filled with gas and then a sleeve is positioned between the ends of the pipes and welded to the pipes.