Muffler construction
US4872528A · kind A · utility
15Cited by
11References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 1, 1988 |
| Grant date | Oct 10, 1989 |
| Priority date | — |
| Expiry date | Aug 1, 2008 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF01N1/08
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
A muffler construction having improved sound attenuation characteristics. A tapered tubular metal screen is disposed within the outlet conduit of a muffler and has a axis concentric with the axis of the conduit. The screen has a closed end preferably facing in a downstream direction with respect to gas flow, and the opposite open end of the screen is attached to the conduit. The screen acts to reduce the sound levels without increasing the overall size of the muffler and with a minimum increase of weight.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.