Exhaust system for a marine propulsion device having a driveshaft extending vertically through a bottom portion of a boat hull
US7387556B1 · kind B1 · utility
34Cited by
26References
21Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 1, 2006 |
| Grant date | Jun 17, 2008 |
| Priority date | — |
| Expiry date | Apr 29, 2026 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB63H20/26
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
An exhaust system for a marine propulsion device directs a flow of exhaust gas from an engine located within the marine vessel, and preferably within a bilge portion of the marine vessel, through a housing which is rotatable and supported below the marine vessel. The exhaust passageway extends through an interface between stationary and rotatable portions of the marine propulsion device, through a cavity formed in the housing, and outwardly through hubs of pusher propellers to conduct the exhaust gas away from the propellers without causing a deleterious condition referred to as ventilation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.