Ring airfoil launching system
US6742509B2 · kind B2 · utility
Inventors
Key dates
| Filing date | Jun 20, 2002 |
| Grant date | Jun 1, 2004 |
| Priority date | — |
| Expiry date | Jun 20, 2022 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF41B3/02
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
An airfoil launching system having a rod with a structure attached to a first end of the rod. A pusher holds a ring airfoil and has a sufficient coefficient of friction that the ring airfoil will generally rotate with the pusher and is rotatably and slidably mounted on the rod. Propulsive force is provided by resilient bands connected to the structure outward from the rod and to the pusher outward from the central aperture of the pusher. A grip attached to the pusher is utilized to draw the pusher toward the second end of the rod, thereby stretching and energizing the resilient bands, and also to rotate the pusher and, consequently, the airfoil.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.