Sound absorber for motor vehicles
US5681072A · kind A · utility
31Cited by
2References
16Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 11, 1995 |
| Grant date | Oct 28, 1997 |
| Priority date | — |
| Expiry date | Apr 11, 2015 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10K11/172
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A sound absorber for motor vehicles is constructed in the form of a double-wall, flat resonant body (1) with a perforated front wall (3) facing the noise source and a substantially unperforated rear wall (4). The sound absorber is constructed as a combined plate/perforated resonator and is able to absorb both high and lower frequencies.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.