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:
May. 17, 2011
Filed:
Oct. 31, 2006
Wihua Yang, Ann Arbor, MI (US);
Charles J. Bruggemann, Rochester Hills, MI (US);
Wihua Yang, Ann Arbor, MI (US);
Charles J. Bruggemann, Rochester Hills, MI (US);
GM Global Technology Operations LLC, Detroit, MI (US);
Abstract
A method is provided for manufacturing a shaped tubular part from a first tube and second tube. The end of the first tube is inserted into the end of the second tube to provide a region of overlapping tube walls. An induction coil is placed around the outer surface of the first and second tubes at the region of overlapped tube walls. The induction coil is energized to make a plurality of longitudinally spaced apart magnetic pulse welds attaching the tubes together to thereby form a multi-tube one-piece composite tubular assembly. The tubular assembly is then subjected to a forming process such as hydroforming, tube bending or stretch bending to form the final shape of the tubular part.