Sound absorbing structure
US4243117A · kind A · utility
23Cited by
13References
10Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 27, 1978 |
| Grant date | Jan 6, 1981 |
| Priority date | — |
| Expiry date | Oct 27, 1998 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10K11/172
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
A plurality of parallel and laterally spaced impermeable walls define an array of side-by-side elongate fluid filled cavities. Adjacent open ends of the cavities provide a sound-receiving or admittance end for the sound waves into the cavities. An acoustically reflective, preferably impermeable, barrier is disposed adjacent the ends of the cavities remote from their sound-receiving end and terminates the cavities. The cavities are uniquely configured to provide an effective geometrical sound-absorbing structure while minimizing the structural elements required and, thus, the cost of manufacture.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.