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:
Feb. 25, 1997
Filed:
Dec. 29, 1994
Applicant:
Inventor:
Michel Verdier, Villeurbanne, FR;
Assignees:
Framatome, Courbevoie, FR;
Compagnie Generale des Matieres Nuclaires, Belizy Villacoublay, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G21C / ; G21C / ;
U.S. Cl.
CPC ...
376260 ; 376234 ; 72367 ;
Abstract
A method of manufacturing a guide tube for a nuclear fuel assembly, in which a tubular blank of constant thickness is prepared, the thickness of the blank is reduced over a fraction of its length in the range 70% to 90% while maintaining a constant inner diameter, and then that section of the blank which has retained its original thickness is forced inwardly by an amount such that a tube is formed which has a constant outside diameter and a variable thickness.