Broadband sparse acoustic absorber
US11322126B2 · kind B2 · utility
3Cited by
8References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 20, 2018 |
| Grant date | May 3, 2022 |
| Priority date | — |
| Expiry date | Jul 13, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10K11/162
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
A broadband sparse acoustic absorber includes a periodic array of spaced apart unit cells, generally having a lateral fill factor less than 0.5. Each unit cell includes a pair of joined, and inverted, Helmholtz resonators, having longitudinal and lateral neck portions that are perpendicular to one another. The longitudinal neck portions are typically covered and/or filled with acoustic absorbing material. Sound suppression systems include sound emitting devices that are at least partially surround by one or more such arrays.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.