Active exhaust silencer
US5541373A · kind A · utility
22Cited by
18References
17Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 6, 1994 |
| Grant date | Jul 30, 1996 |
| Priority date | — |
| Expiry date | Sep 6, 2014 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10K2210/3227
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
An active silencer for a vehicle exhaust system that has a low profile so that it can be hung underneath the vehicle in a conventional manner without altering the vehicle. The silencer has a chamber isolated from the exhaust flow in which one or more speakers are mounted side-by-side. The speakers face downwards and share a common tuning chamber within the isolated chamber. The tuning chamber is ported to a mixing chamber where the canceling acoustic waves mix with noise from the exhaust flow before the exhaust noise exits to the atmosphere.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.