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:
Jan. 22, 1985
Filed:
Jan. 04, 1983
Jean-Claude Bourget, Issy-les-Moulineaux, FR;
Les Cables de Lyon, Clichy, FR;
Abstract
A method of manufacturing electric cable having compressed mineral insulation and a titanium sheath and at least one titanium inner conductor, said method including preparing a titanium sheath preform whose diameter is very much greater than that of the cable, then lengtening the preform by successive hammering and/or laminating operations between which the preform is annealed, wherein the titanium used contains not more than: 0.03% nitrogen; 0.25% oxygen; 0.015% hydrogen; 0.10% carbon and 0.30% iron; wherein its tensile strength is not more than 5.40 N/mm.sup.2 wherein its breaking strain is at least 22%, and wherein annealing operations are performed in a rare gas atmosphere at a temperature lying between 600.degree. C. and 640.degree. C.