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:
Nov. 23, 2004
Filed:
Oct. 22, 2003
Applicant:
Inventors:
Aldo Torti, San Carlo Canavese, IT;
Mario Merlin, San Carlo Canavese, IT;
Sebastiaro Ferrero, Torino, IT;
Assignee:
International Rectifier Corporation, El Segundo, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B23K 1/120 ;
U.S. Cl.
CPC ...
B23K 1/120 ;
Abstract
A process for joining a steel terminal to a copper electrode comprises applying a thin silver-copper flash to the surface of a copper electrode and bringing a steel surface into contact with the flash during high frequency welding. The weldment is improved compared to conventional welds that do not incorporate the flash layer. For example, a silver—18 wt % copper alloy having a thickness of about 180 microns produced uniform, high quality welds between nickel steel terminals and 99.999% pure copper electrodes.