Sound absorbing structures
US4821841A · kind A · utility
22Cited by
12References
18Claims
0Family size
Inventors
Key dates
| Filing date | Jun 16, 1987 |
| Grant date | Apr 18, 1989 |
| Priority date | — |
| Expiry date | Jun 16, 2007 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE04B2001/8452
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
The instant invention involves a sound absorbing structure which is formed from at least two adjacent panels which are assembled so as to provide a narrow slot of between about 1/16 and 3/4 inch between the panels. The slot opens into a resonance cavity formed by the panels, their support strips, and a bottom member. The resulting sound absorbing structure provides substantial sound absorption at frequencies of less than about 1000 Hz.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.