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:
Dec. 05, 2000
Filed:
Oct. 09, 1998
Applicant:
Inventor:
Christian Wittrisch, Rueil Malmaison, FR;
Assignee:
Institut Francais du Petrole, , FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B / ;
U.S. Cl.
CPC ...
385107 ; 385101 ; 385102 ; 385113 ; 166385 ; 166 651 ;
Abstract
A composite rod rigid in compression is sufficiently flexible to be wound round a reel that is less than three meters in diameter. The rod comprises at least three parts: a core including at least one data transmission element, a layer made of steel reinforcing wires, and a composite layer made of embedded fibers. In a variant, steel wires are substantially parallel to the axis of the core. Application of the rod is to displacement of measuring instruments in a well or pipe comprising a greatly inclined section.