Tandem propeller assembly for a marine propulsion unit
US5310371A · kind A · utility
4Cited by
7References
30Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 26, 1992 |
| Grant date | May 10, 1994 |
| Priority date | — |
| Expiry date | Aug 26, 2012 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB63H2023/342
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A tandem propeller assembly for use with a marine propulsion unit is disclosed wherein a single shock-absorber assembly is utilized to assure damping effects for both propellers so as to protect the propulsion system from being damaged when either propeller is obstructed by drifting wood or other debris. Each of the preferred embodiments disclosed provides a simple structure for absorbing impacts upon either propeller in a tandem propeller assembly while minimizing any increase in the surface area of contact with the water which would increase the propulsion resistance and would result in speed loss.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.