Title:
HYDROFORMING A TUBULAR STRUCTURE OF VARYING DIAMETER FROM A TUBULAR BLANK USING ELECTROMAGNETIC PULSE WELDING
Document Type and Number:
WIPO Patent Application WO2001081021
Kind Code:
A3
Abstract:
A method of hydroforming a tubular structure of varying diameter along its longitudinal axis, comprising the formation of a tubular blank (44, 80) member by welding together, at their periphery, tubes (30, 32, 52. 54) of different diameters using electromagnetic pulse welding (20, 50).
Inventors:
GABBIANELLI GIANFRANCO
KOTAGIRI SEETARAMA S
ASHLEY RICHARD
KOTAGIRI SEETARAMA S
ASHLEY RICHARD
Application Number:
PCT/CA2001/000552
Publication Date:
February 07, 2002
Filing Date:
April 24, 2001
Export Citation:
Assignee:
COSMA INT INC (CA)
International Classes:
B21C37/15; B21D26/033; B21D26/053; B21D26/14; B23K13/02; B23K20/06; (IPC1-7): B21D26/14; B21D26/02
Domestic Patent References:
| WO1997000595A1 | 1997-01-03 | |||
| WO1999065636A1 | 1999-12-23 |
Foreign References:
| DE1804455A1 | 1970-09-03 | |||
| US6047582A | 2000-04-11 | |||
| US3810372A | 1974-05-14 | |||
| GB2330096A | 1999-04-14 |
Download PDF:
Previous Patent: METHOD FOR CONTINUOUSLY CLEANING AND REMOVING GREASE FROM KITCHEN EXTRACTION CIRCUITS AND FOR NEUTRA...
Next Patent: GILLED PIPE
Next Patent: GILLED PIPE