Bottom structure of personal watercraft
US6237522A · kind A · utility
11Cited by
4References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 16, 2000 |
| Grant date | May 29, 2001 |
| Priority date | — |
| Expiry date | Mar 16, 2020 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB63B1/042
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A bottom structure of a personal watercraft enhances the running performance of a personal watercraft. A concavo-convex face (21) having very small concave or convex portions for drawing air from an outside of a watercraft is formed on a water contact face (S) in a bottom surface (20) of the personal watercraft during planing. The air is drawn by the concavo-convex face (21), thereby separating a water flow from the bottom surface (20). Consequently, frictional resistance to the water in the bottom surface (20) can be reduced.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.