Lightweight acoustical system
US6296075A · kind A · utility
30Cited by
14References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 2, 2000 |
| Grant date | Oct 2, 2001 |
| Priority date | — |
| Expiry date | Jun 2, 2020 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB32B2471/02
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
An improved acoustical system for inhibiting noise in a motor vehicle. The system comprises an impermeable layer and an underlayment adjacent to the impermeable layer. The underlayment includes a first fibrous layer and a second fibrous layer. The underlayment has an airflow resistance between about 2000 and about 5000 mks Rayls.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.