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. 09, 1999
Filed:
Nov. 08, 1996
Applicant:
Inventors:
Rolf Martin Holmen, Raufoss, NO;
Vegard Sande, Raufoss, NO;
Assignee:
Raufoss Technology AS, Raufoss, NO;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B23K / ; B21K / ;
U.S. Cl.
CPC ...
2281145 ; 228232 ; 148527 ; 29-12 ;
Abstract
The present invention relates to a method for manufacturing shells, wherein a belt is attached to the outer surface of the shell by friction welding. The method is particularly favorable for welding bands to thin-walled shells. In the method, prior to the welding process, the shell is hardened and/or tempered for optimizing its properties during use and, after hardening and/or tempering, the shell receives the belt by friction welding, during which the temperature of the shell is kept at a level which does not reduce the qualities of the shell to a substantial degree.