Multiple material bumper beam
US6923482B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 27, 2003 |
| Grant date | Aug 2, 2005 |
| Priority date | — |
| Expiry date | Jun 27, 2023 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE04C2003/0456
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A bumper beam includes a first portion of a first material and a second portion of a second material. The first material has different material properties than the second material. For example, the first material may have a generally higher tensile or yield strength than the second material. In one embodiment, the first material comprises martensitic steel, while the second material comprises a dual-phase, multiphase, complex-phase or TRIP steel. In addition, the first material may have a different thickness than the second material. The bumper beam provides an improved strength to weight ratio than conventional bumper beams. This abstract is provided to comply with the rules requiring an abstract that allows a searcher or other reader to quickly ascertain the subject matter of the disclosure. It is submitted with the understanding that it will not be used to interpret or limit the scope of the claims. 37 CFR 1.72(b).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.