Sound transmission and absorption control media
US5504282A · kind A · utility
29Cited by
7References
22Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 24, 1994 |
| Grant date | Apr 2, 1996 |
| Priority date | — |
| Expiry date | Aug 24, 2014 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60R13/083
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
The present invention relates to sound transmission barrier and/or sound absorption media systems that are especially useful in motor vehicles and boats. These systems are based on the concept of replacing the traditional intermediate high-mass layer ("massback") with two or more high-mass layers that are separated by a strong yet light material, such as polyurethane foam.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.