Marine muffler
US4000786A · kind A · utility
4Cited by
8References
3Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 3, 1975 |
| Grant date | Jan 4, 1977 |
| Priority date | — |
| Expiry date | Nov 3, 1995 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF01N1/08
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
A reactive type marine muffler which combines principles of both baffled construction and expansion chamber attenuation with a liquid flow path to provide improved sound attenuation over a broad spectrum of octave bands and a substantially lower dB(A). The baffles are preferably dome-shaped with their apices directed counter to the flow through the muffler and the expansion chambers are interconnected by a connecting tube mounted in a median baffle and projecting into adjoining expansion chambers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.