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:
Aug. 08, 2000
Filed:
Sep. 17, 1998
Applicant:
Inventor:
Pierre Odru, Fontenay Sous Bois, FR;
Assignee:
Institut Francais du Petrole, Cedex, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16L / ;
U.S. Cl.
CPC ...
138134 ; 138131 ; 138135 ; 138139 ;
Abstract
A flexible piping structure has in combination, from the axis of the pipe towards the exterior, a cylindrical, metal inner sealing tube, a layer resistant to internal and external pressures and a sealing sheath made from extruded plastics material. In one embodiment, an intermediate layer of plastics material is arranged between the tube and the pressure-resistant layer.