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:
Aug. 19, 2003
Filed:
Oct. 26, 2001
Jian Xie, Stevenson Ranch, CA (US);
Paul Edward Denney, Columbus, OH (US);
Edison Welding Institute, Inc., Columbus, OH (US);
Abstract
To overcome 1) the high levels of porosity due to coating material vaporization and entrapment into the weld, 2) spewing of molten base metal from the weld leaving holes and pits in the weld, and 3) humping effects when oblong beam configurations are used at higher weld speeds to weld coated materials, the present invention features an energy source ( ) with multiple separated energy beams ( ) (formed by using multiple separate beam sources or manipulation of a single beam ( ) into separated multiple energy beams ( ) using wedge mirror ( ) and parabolic focusing mirror ( )) that produces high quality (porosity free) lap welds in a weld stack ( ) of layered materials ( ) coated with coating material ( ′) with zero gap at interface ( ) during the welding process. An energy source ( ) with multiple, separated energy beams ( ) extends the beam keyhole and increases the time and conditions available for vapor/gas to diffuse less violently through the molten weld pool.