Patent · US Expired

Process for deforming a piece of thin-walled metal tube

US6766678B1 · kind B1 · utility

5Cited by

2References

11Claims

0Family size

Assignees

Dr. Meleghy GmbH & Co. KG · DE
CORUS STAAL B.V. · NL

Inventors

Bernd Schulze · Wolfsburg, DE
Hendrik Bart Van Veldhuizen · Beverwijk, NL

Key dates

Filing date	May 14, 2003
Grant date	Jul 27, 2004
Priority date	—
Expiry date	May 14, 2023

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB21D11/08
WIPO fieldMachine tools
WIPO sectorMechanical engineering

Abstract

Process for deforming a piece of thin-walled metal tube, comprising the operations of bending the piece of tube with respect to its original axis, in which process the wall of the piece of tube is firstly provided, at least at the location where the bend is intended to be, with a deformation which extends substantially in the longitudinal direction of the piece of tube, and in which process wall material is moved closer to the neutral plane of bending, and the piece of tube is then bent, after which the ultimate shape of the piece of tube which is to be deformed is imposed by hydroforming.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.