Automotive noise attenuating trim part
US8863897B2 · kind B2 · utility
5Cited by
26References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 9, 2011 |
| Grant date | Oct 21, 2014 |
| Priority date | — |
| Expiry date | Mar 9, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10K11/168
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
A sound attenuating trim part, including at least one insulating area with an acoustic mass-spring characteristics having at least a mass layer and a decoupling layer adjacent to the mass layer, whereby the mass layer consists of a porous fibrous layer and a barrier layer, with the barrier layer being located between the porous fibrous layer and the decoupling layer and all layers are laminated together, and whereby the porous fibrous layer at least in the insulating area has adjusted dynamic Young's modulus (Pa) such that the radiation frequency of is at least 3000 (Hz).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.