Surface drive outboard with improved transmission
US4981452A · kind A · utility
8Cited by
5References
9Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 20, 1988 |
| Grant date | Jan 1, 1991 |
| Priority date | — |
| Expiry date | Apr 20, 2008 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF01P2050/04
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
An outboard motor for a marine craft which incorporates a surface drive heretofore only found with inboard motors. A specially designed constant velocity universal joint is used to pivotally couple the propeller shaft and propeller shaft extension housing to the outboard's lower unit whereby propeller thrust forces are transmitted directly through the propeller shaft to the transmission's output shaft. Furthermore, provision is made for routing engine cooling water and exhaust through the prop shaft extension housing and the propeller hub, thereby reducing the engine noise.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.