Multi-composite acoustic panel
US7467688B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 28, 2004 |
| Grant date | Dec 23, 2008 |
| Priority date | — |
| Expiry date | Feb 24, 2025 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/253
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A multi-composite acoustic panel for application to walls or ceilings. The panel is made from 15 to 65% of particles of sawdust with a granulometry of 4 to 60 mesh, 25 to 75% of rubber crumb or other petroleum derivatives or recycled rubber with a granulometry of 4 to 30 mesh and 3 to 20% of a polyurethane elastomer binder, the percentages being expressed by weight with relation to the total weight of the panel. In use the rubber acts as an anti-vibration element and the sawdust acts as an acoustic energy absorber as this type of fibre is hollow-centered which permits an absorption role which the rubber particle does not have. Said particle has the ability to reduce an impact.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.