Watercraft having a jet propulsion system with improved efficiency
US6872105B2 · kind B2 · utility
6Cited by
14References
31Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 11, 2003 |
| Grant date | Mar 29, 2005 |
| Priority date | — |
| Expiry date | Apr 11, 2023 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB63H11/103
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A watercraft, equipped with a jet propulsion system with improved efficiency of operation is disclosed. Structures are disposed within a water passage of the jet propulsion system at a position upstream of the jet propulsion unit that modulate the amount of water that is allowed to pass through the water passage. The structures can be a flexible fluid filled bag, an adjustable ride plate, and an additional water passage. Each of the structures allow a greater amount of water into the water passage during acceleration than during constant speed travel of the watercraft.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.