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. 03, 2001
Filed:
Dec. 14, 2000
Applicant:
Inventors:
François Dupoiron, Barentin, FR;
Philippe François Espinasse, Bihorel, FR;
Patrice Jung, La Mailleraye-sur-Seine, FR;
Assignee:
Corlexip, , FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16L 1/116 ;
U.S. Cl.
CPC ...
F16L 1/116 ;
Abstract
A flexible tubular pipe having an internal sheath and a pressure vault around the sheath with a helically would short pitch metal wire. The metal wire has an I-shaped cross-section with a narrowed central web and greater thickness internal and external flanges. Recesses in at least one set of the flanges enable fastening elements to be installed for holding to adjacent wire windings. The ratios of widths of the flanges, height and width of the wire, moments of inertia in the width wise and radial direction are disclosed.