Modal silencer
US5471020A · kind A · utility
3Cited by
10References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 30, 1993 |
| Grant date | Nov 28, 1995 |
| Priority date | — |
| Expiry date | Aug 30, 2013 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF23J2900/13003
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
In order to abate unwanted noise having as its source a stack or duct of large cross-sectional dimension, a venturi is installed in the duct such as to suppress at least the highest order modes of sound propagation in the stack or duct. The invention is most useful with stacks or ducts having a cross-sectional dimension exceeding 50 cm.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.