Bumper core
US6890009B2 · kind B2 · utility
12Cited by
11References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 25, 2003 |
| Grant date | May 10, 2005 |
| Priority date | — |
| Expiry date | Aug 25, 2023 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/233
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
An elongated bumper core of a polyolefin-based resin-containing foam having a density of 0.045-0.2 g/cm3 and showing a compressive load of F20 at 20% strain, a compressive load of F40 at 40% strain and a compressive load of F60 at 60% strain when compressed by a rigid pipe having an outer diameter of 70 mm at a compression speed of 500 mm/minute, wherein the ratio F20/F40 is in the range of 0.6-1.3 and the ratio F60/F40 is in the range of 0.75-1.3.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.