Method and device using high interior pressure to reshape structural section
US7028520B2 · kind B2 · utility
0Cited by
8References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 10, 2003 |
| Grant date | Apr 18, 2006 |
| Priority date | — |
| Expiry date | Feb 9, 2024 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB21D26/045
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A method using high interior pressure to reshape structural section of continuously bounded overall cross-section, whereby the overall cross-section can be provided with extra walls or chambers and a stopper is forced radially against each end of the piece. The object is to reduce wear on the stopper while ensuring that any walls or chambers in addition to its overall crosssection will buckle or bulge only at their ends.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.