Marine engine noise suppressor with swim platform
US5094640A · kind A · utility
Inventors
Key dates
| Filing date | Dec 14, 1990 |
| Grant date | Mar 10, 1992 |
| Priority date | — |
| Expiry date | Dec 14, 2010 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB63H21/32
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
Sound muffling devices for marine engines for installation on the external portion of the transom of a marine vessel are attached in such a manner that any breakdown within the silencer causes no discharge of exhaust gases or cooling fluids into the interior of the vessel and the gases and cooling fluid continue to be discharged overboard. The silencers are designed to reduce, substantially, the noise level emitted by the engine under operation by the efficient mixture of gases and water through a series of baffles, with low resistance to gas flow that does not diminish engine efficiency. At high speeds the gases and odors are emitted from the vessel at the centerline with distance and direction such as to reduce, substantially, emissions into the air environment. The device receives exhaust gas and cooling water from an exhaust pipe passing through the transom at the side of the boat and directs the gas athwart the boat to the center where it is exhausted. At low speeds the gas is exhausted at lateral openings at a distance from the transom. These by-pass openings tend to close off at high speed, directing the exhaust to the center, lower openings. The devices are provided in pair…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.