Wing sail
US4685410A · kind A · utility
Inventor
Key dates
| Filing date | Apr 8, 1985 |
| Grant date | Aug 11, 1987 |
| Priority date | — |
| Expiry date | Apr 8, 2005 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB63H9/0635
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
An airfoil sail system for a boat having a mast is disclosed. The airfoil sail system includes a front airfoil which is pivotal about an axis defined by the mast. The front airfoil has leading and trailing edges, and is generally symmetrical about a vertical plane extending between its leading and trailing edges. A rear airfoil is also provided which has leading and trailing edges. The rear airfoil is generally symmetrical about a vertical plane extending between its leading and trailing edges. A base member having a traveller is provided for operatively coupling the front and rear airfoils so that rotation of the front airfoil about its axis effects a counter-rotation of the rear airfoil to permit adjustment of the camber of the airfoil sail system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.