Vehicle bumper beam
US6986536B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 25, 2004 |
| Grant date | Jan 17, 2006 |
| Priority date | — |
| Expiry date | Jun 25, 2024 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60R2019/1826
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A bumper beam includes an open front section made from a high-strength material such as ultra-high-strength steel (UHSS) material, and further includes a mating back section made of lower strength material attached to a rear side of the front section along abutting flanges. The front and back sections combine to define different tubular cross sections along their length, thus providing selected stiffness and strength at critical areas of the bumper beam. The front section can be roll-formed, and the back section can be stamped, thus taking advantage of roll-forming processes' ability to form high-strength materials, while allowing the back section to have a more complicated shape and be stamped. For example, the back section can be made from a material selected from a group consisting of HSLA steel, aluminum, and/or polymeric material. The back section is attached to the beam using welding or mechanical attachment.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.