Soundproofing panel with beads, and a method of manufacture
US7520369B2 · kind B2 · utility
16Cited by
10References
18Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Nov 19, 2004 |
| Grant date | Apr 21, 2009 |
| Priority date | — |
| Expiry date | Jan 31, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10K11/172
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A soundproofing panel having a core sandwiched between a solid wall and a porous wall. The core being connected to the walls and having partitions extending in the thickness direction between the two walls so as to form cells. Each cell containing at least one sound energy dissipating layer constituted by hollow spherical beads having mutually contacting walls that are porous and micro-perforated, and being held in position in the thickness direction between the two walls by nets that are secured to the partitions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.