Multi-section support rail apparatus and method of making
US6557930B1 · kind B1 · utility
14Cited by
2References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 26, 2001 |
| Grant date | May 6, 2003 |
| Priority date | — |
| Expiry date | Oct 26, 2021 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49805
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A multi-section support rail has a first section with an outer circumferential wall, a parallel inner circumferential wall and a transverse web extending longitudinally therealong, a second section hollow tubular section with an outer circumferential wall and a parallel inner circumferential wall. The outer circumferential walls are substantially identical dimensionally. The sections are joined at mating surfaces. The joined sections are pre-bent at the second section and then hydroformed to a final desired shape. The transverse web retains the extruded dimensions throughout the hydroforming process.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.