B-pillar central beam and method for manufacturing
US10633031B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 16, 2016 |
| Grant date | Apr 28, 2020 |
| Priority date | — |
| Expiry date | Mar 13, 2037 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC22C38/32
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
In a first aspect, a B-pillar central beam made of steel which comprises hard zones and soft zones. Such soft zones have less mechanical strength than the hard zones. The B-pillar central beam further comprises an upper region with a fastening portion for fastening to a roof member, and a lower region with a fastening portion for fastening to a sill member. The B-pillar central beam includes two soft zones. A lower soft zone is located between the lower fastening portion and 50% of the B-pillar central beam height, and an upper soft zone is located between the upper fastening portion and 50% of the B-pillar central beam height. The upper soft zone has higher mechanical strength than the lower soft zone. Methods for manufacturing such B-pillar central beam are also provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.