Exhaust gas silencing device
US4744440A · kind A · utility
20Cited by
3References
8Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 10, 1987 |
| Grant date | May 17, 1988 |
| Priority date | — |
| Expiry date | Jun 10, 2007 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF01N2470/02
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
An exhaust silencing device comprises an outer tube that is pinched down to form a series of annular chambers around a coaxial inner gas flow tube and has openings connecting the chambers to provide for some secondary gas flow parallel to primary flow through the tube. The device and is shown in conjunction with a catalytic converter to provide an exhaust system that has a sporty sound.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.