Sound absorber, sound absorbing panel and sound absorbing wall
US11854523B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 6, 2023 |
| Grant date | Dec 26, 2023 |
| Priority date | — |
| Expiry date | Apr 6, 2043 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE04B2001/848
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A sound absorber includes cavities mutually different in at least one of shape and size. A wall of a first cavity included in the cavities includes a first region and a second region. Through-holes connecting an interior to an exterior of the first cavity is formed in the first region. No through-holes connecting the interior and the exterior of the first cavity is formed in the second region adjacent to the first region. A wall of a second cavity included in the cavities includes a third region and a fourth region. Through-holes connecting an interior to an exterior of the second cavity is formed in the third region. No through-holes connecting the interior and the exterior of the second cavity is formed in the fourth region adjacent to the third region. Size of through-holes in the first region is different from size of through-holes in the third region.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.