Inverted flow marine engine exhaust muffler
US4713029A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 17, 1987 |
| Grant date | Dec 15, 1987 |
| Priority date | — |
| Expiry date | Feb 17, 2007 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02B61/045
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
An exhaust muffler for a marine engine comprises a first vertically oriented tubular member having a lower end sealingly extended through the bottom of a main body chamber and an upper end extending upwardly through the top of the chamber. A second tubular member surrounds and is spaced from the first tubular member for forming a passage therebetween, and has its upper end sealingly extended through the top of the chamber and its lower end extending to a point below two chamber inlets, yet spaced from the bottom of the chamber. A cap seals the upper end of the second tubular member to invert upwardly flowing exhaust gases and cooling fluid within the passage between the first and second tubular members downwardly into the first tubular member for discharge from the muffler.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.