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. 13, 1984
Filed:
Jun. 15, 1982
Applicant:
Inventors:
Daniel Josien, Willems, FR;
Jean-Louis Migliarese, Paris, FR;
Assignee:
Compagnie Francaise des Petroles, Paris, FR;
Primary Examiner:
Int. Cl.
CPC ...
F16L / ;
U.S. Cl.
CPC ...
138 93 ;
Abstract
The invention relates to an internal obturator for a pipe, particularly for a hydrocarbon conveying pipe-line, which comprises a central core and a flexible inflatable sleeve surrounding the core, wherein the central core comprises a flexible casing filled with a hardenable material which is hardened after its introduction into the flexible casing. The hardenable material may be hardened before or after insertion of the obturator into a pipe.