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:
Oct. 12, 1993
Filed:
May. 15, 1992
Applicant:
Inventor:
Jacques Griffaton, Chalon sur Saone, FR;
Assignee:
Framatome, Courbevoie, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B23K / ;
U.S. Cl.
CPC ...
21912163 ; 376260 ; 21912183 ;
Abstract
The welding cane is equipped with a welding head (1) comprising an optical fiber (5) which emits a laser beam focused by an optical device (9) onto a wall (10) to be welded where a weld puddle (12) is formed. The welding head (1) comprises a photoelectric cell (45) illuminated by the scattered light around the end of the optical fiber. The signal emitted by the photoelectric cell (45) depends on the integrity of the optical fiber (5) and on the energy utilized for welding. It is used in the welding of a sealing sleeve in a pressurized water nuclear reactor steam generator tube.