Airfoil
US5690533A · kind A · utility
Inventors
Key dates
| Filing date | Sep 3, 1996 |
| Grant date | Nov 25, 1997 |
| Priority date | — |
| Expiry date | Sep 3, 2016 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA63H33/185
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
An airfoil is disclosed that is adapted to be launched into the air using an elastomeric band. The device includes a nose portion that is generally in the shape of an elongate ellipsoid that has a front end and a rear end. An elongate rib depends from the rear end of the nose portion in a dkection generally along the long axis of the nose portion, and a pair of generally planar wings depend from the rib and from the rear of the nose portion. The plane of the first wing portion is generally parallel to and spaced apart from the plane of the second wing portion, and both wing portions have a tapered outer edge. The taper of the outer edge of the first wing portion is oppositely disposed to that of the second wing portion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.