Tack aback sailboat
US5603277A · kind A · utility
5Cited by
12References
18Claims
0Family size
Inventor
Key dates
| Filing date | Oct 10, 1995 |
| Grant date | Feb 18, 1997 |
| Priority date | — |
| Expiry date | Oct 10, 2015 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB63B2035/009
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A rudderless sailboat having a hydrodynamic symmetry fore and aft which can be sailed equally well in either direction. The craft is steered by tilting the mast and keel. In an alternative embodiment the sailboat also has no keel. The hulls are rigid and have a v-shaped bottom. While sailing forward, the sail can be rotated past the angle of zero angle-of-attack to that angle-of-attack where the wind is aback on the sail. This stops the boat and causes it to sail back in the general direction from which it came. This sailboat maneuver is called a tack aback.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.