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. 23, 1999
Filed:
Jan. 13, 1993
Applicant:
Inventors:
Kenneth Grant Kinsman, Waterloo, Ontario, CA;
Walter W Duley, Waterloo, Ontario, CA;
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B23K / ;
U.S. Cl.
CPC ...
21912164 ;
Abstract
A method of welding aluminum alloy workpieces includes the pretreatment of an area adjacent to the seam of the workpiece followed by irradiation of the area with an infrared laser beam having a diameter equal to or greater than the thickness of the workpieces. Substantial subsurface melting of the workpieces is initially generated and the beam can subsequently be scanned along the seam so as to maintain an isotherm corresponding to the melting point of the workpiece at the leading edge of the beam.