Apparent wind direction indicator
US5127358A · kind A · utility
11Cited by
6References
12Claims
0Family size
Inventors
Key dates
| Filing date | May 29, 1991 |
| Grant date | Jul 7, 1992 |
| Priority date | — |
| Expiry date | May 29, 2011 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S116/43
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Masthead device for sailboats that indicates apparent wind direction composed of a rotating wind vane and a protractor arm encompassing multiple reference marks. These marks can be adjusted with greater compass accuracy to allow several settings in each quadrant creating a series of reference points enabling one to more accurately determine the apparent wind angle from a center point, and thus optimize sail trim, heading and boat speed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.