Exhaust system for outboard motor
US5378180A · kind A · utility
24Cited by
6References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 24, 1993 |
| Grant date | Jan 3, 1995 |
| Priority date | — |
| Expiry date | Nov 24, 2013 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF01N2590/021
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
Two embodiments of outboard motors embodying tuned exhaust systems having exhaust pipes and expansion chambers into which the exhaust pipes extend. A catalyst is positioned in the exhaust system downstream of the point where the exhaust pipe terminates in the expansion chamber so as to preclude interference with the exhaust tuning. The catalyst bed is removable for ease of servicing without necessitating removal of the outboard motor from the its attachment to the associated watercraft and a trap device is provided for precluding water from entering the engine through its exhaust ports.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.