Double hydroformed tube with integral reinforcement
US7975383B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 28, 2006 |
| Grant date | Jul 12, 2011 |
| Priority date | — |
| Expiry date | Aug 26, 2029 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/53213
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A hydroforming process forms a hydroformed automotive component as a multiple cell member having an integral internal rib separating the cells and reinforcing the hydroformed component to increase the strength of a hydroformed component with a given size and shape. The tubular blank can be manufactured through a roll-forming process or by welding two structural tubular members, to form a tubular blank that has multiple cells with an internal rib separating the cells. The hydroforming process injects fluid under pressure into each of the cells to expand the tubular blank into the shape defined by the die holding the blank. The internal web separating the cells of the blank becomes an integral internal reinforcement spanning the component to enhance the strength, rigidity and stiffness of the component. Providing differential pressure on the multiple cells can stretch and twist the internal rib for positioning internally as desired.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.