20020003159-A1 is referenced by 2 patents.

A method of hydroforming a tubular structure of varying diameter along its longitudinal axis, comprising the formation of a tubular blank member by welding together, at their periphery, tubes of different diameters using electromagnetic pulse welding.

Title
Hydroforming a tubular structure of varying diameter from a tubular blank made using electromagnetic pulse welding
Application Number
9/841176
Publication Number
20020003159
Application Date
April 25, 2001
Publication Date
January 10, 2002
Inventor
Richard Ashley
Berkely
MI, US
Seetarama S Kotagiri
Rochester Hills
MI, US
Gianfranco Gabbianelli
Troy
MI, US
Agent
Pillsbury Winthrop
VA, US
IPC
B23K 31/02
B21D 39/04
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