Acoustic panels, apparatus and assemblies with airflow-resistive layers attached to sound incident surfaces
US8230969B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Apr 21, 2011 |
| Grant date | Jul 31, 2012 |
| Priority date | — |
| Expiry date | Apr 21, 2031 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE04B2001/8471
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
An acoustic panel includes a main body portion having a substantially planar front surface for orientation toward a sound source and an opposite, substantially convoluted rear surface. An airflow-resistive layer of material is secured to the planar front surface in face-to-face contacting relationship. The airflow-resistive layer of material may have a specific airflow resistance of between about 50-20,000 mks rayls, and may be configured to attenuate sound at one or more predetermined frequencies. A depth of convolution of the rear surface is between about forty percent to about seventy-five percent (40%-75%) of a thickness of the main body portion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.