Self-trimming sailset
US4543899A · kind A · utility
16Cited by
3References
4Claims
0Family size
Inventor
Key dates
| Filing date | Jun 13, 1983 |
| Grant date | Oct 1, 1985 |
| Priority date | — |
| Expiry date | Jun 13, 2003 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB63H9/061
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A principal sail (1) rotates about an erect axis (2) and an auxiliary sail or vane (3) is mounted downstream of the principal sail (1). The vane (3) is mounted on a boom (4) that extends from the principal sail (1) so that the principal sail (1) is trimmed as the tail vane (3) moves to its position of minimum drag. A second auxiliary vane (5) is mounted forwards of the leading edge of the principal sail (1) and is capable of opposing the moment of the principal sail (1) about its own axis as the principal sail is moved towards a stalling position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.