Sound absorbing body, sound absorbing plate, and sound absorbing unit
US5854453A · kind A · utility
20Cited by
4References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 9, 1997 |
| Grant date | Dec 29, 1998 |
| Priority date | — |
| Expiry date | Apr 9, 2017 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE04B2001/8495
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
To provide a sound absorbing structure having a superior sound absorbing characteristic and an external appearance of the sound absorbing structure which does not cause flicker or the like, by disposal, for example, in the front of an air chamber, a plurality of ribs (2a) are disposed on one surface of the sound absorbing board body (2), and a plurality of through-holes (3) are provided in basal portions (2b) between the ribs (2a) to form a porous structure. Concealing materials (5) are provided between the ribs (2a) of the sound absorbing board body to conceal the through-holes (3), respectively.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.