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:
Jul. 29, 1980
Filed:
Mar. 30, 1978
Applicant:
Inventors:
Assignees:
Compagnie Francaise des Petroles, Paris, FR;
Societe Nationale Elf Aquitaine (Production), Paris, FR;
Ateliers et Chantiers de Bretagne--A.C.B., Nantes, FR;
Etudes Petrolieres Marines, Paris, FR;
Compagnie Generale pour les Developpements Operationnels des Richesses, , US;
Compagnie Maritime d'Expertises, Marseille, FR;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B23K / ;
U.S. Cl.
CPC ...
228 / ; 228 445 ; 228 / ; 228 565 ;
Abstract
Butt-welding apparatus for welding two pipes, e.g. for the shipboard welding of a laid pipe and a towed pipe, comprises a frame for receiving the pipe ends, means for securing the pipe ends relative to the frame and compensation means for causing movement of one pipe relative to the other to compensate for any shrinkage caused by the welding operation and by preheating the pipe ends to be welded.