Patents by Inventor Edmond Pignal

Edmond Pignal has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Butt-welding apparatus for assembling and laying pipe strings in deep water
    Patent number: 4214692
    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.
    Type: Grant
    Filed: March 30, 1978
    Date of Patent: July 29, 1980
    Assignees: Compagnie Francaise des Petroles, Societe Nationale Elf Aquitaine (Production), Ateliers et Chantiers de Bretagne--A.C.B., Etudes Petrolieres Marines, Compagnie Generale pour les Developpements Operationnels des Richesses Sous-Marines (DORIS), Compagnie Maritime d'Expertises
    Inventors: Roger J. Le Garfe, Edmond Pignal, Charles J. Magloire