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:
Mar. 16, 1976
Filed:
Aug. 19, 1974
Michel G Lecordier, Marseille, FR;
Compagnie Francaise des Petroles, S.A., Paris Cedex, FR;
Etudes Petrolieres Marines, S.A.R.L., Paris, FR;
Ateliers et Chantiers de Bretagne - A.C.B. - S.A., Nantes, FR;
Compagnie Maritime d'Expertises, S.A., Marseille, FR;
Compagnie Generale pour les Developpements Operationnels des Richesses, , US;
Abstract
Apparatus for checking the bore and for plugging a pipe comprises a frame movable along the interior of the pipe, the frame carrying means for detecting a deviation in the bore of the pipe, means responsive to an overpressure of fluid in the pipe in a direction opposite to that in which the apparatus is intended to move, and a movable control part responsive to the detection of a deviation and of an overpressure for operating locking means for locking the apparatus relative to the pipe and sealing means for sealing the pipe.