Wingsail systems
US4770113A · kind A · utility
Inventor
Key dates
| Filing date | Jan 2, 1987 |
| Grant date | Sep 13, 1988 |
| Priority date | — |
| Expiry date | Jan 2, 2007 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB63H9/061
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A wingsail arrangement comprises a thrust wing having an upright leading airfoil having a leading edge and a trailing edge and an upright trailing airfoil having a leading edge and a trailing edge. The leading edge of the trailing airfoil is positioned closely behind the trailing edge of the leading airfoil. The trailing airfoil is mounted for pivoting movement about an upright axis relative to the leading airfoil from an aligned position in which the trailing airfoil is aligned with the leading airfoil to positions to each side of and angularly displaced from that aligned position. A slat has a leading edge and a trailing edge and is pivoted at its leading edge to the trailing edge of the leading airfoil and connected to the leading edge of the trailing airfoil by at least one cable so as to be moved in response to pivoting movement of the trailing airfoil to form a linear nozzle when the trailing airfoil is angularly displaced from the aligned position. An upright pivot pin is disposed proximate the trailing edge of the slat. Structure for engaging the pivot pin is attached to the cable to enable the cable to pivot about an upright axis relative to the slat. At least one wheel is…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.