Patent ID: 6742509
Filing Date: 2004-06-01
Classification: F41B

Abstract:
A ring airfoil launching system, which comprises:a rod having a first end and a second end; a support having a first side and a second side, being attached to said rod, and extending radially outward from said rod; a first set of resilient bands, said first set having a first end and a second end and having the first end connected to the first side of said support outward from said rod; a second set of resilient bands, said second set having a first end and a second end and having the first end connected to the second side of said support outward from said rod; a pusher slidably mounted on said rod between said support and the second end of said rod, said pusher comprising: a generally disc-shaped structure containing a central aperture sized to permit said pusher to rotate and to slide along said rod and having an outer diameter, wherein said generally disc-shaped structure is composed of material having a coefficient of friction which will cause a ring airfoil placed on said pusher generally to rotate with said pusher and wherein a second end of said first set of resilient bands as well as a second end of said second set of resilient bands is attached to said generally disc-shaped structure at points of attachment outward from the central aperture; and a flange attached to said generally disc-shaped structure inward from the outer diameter of said generally disc-shaped structure wherein, said flange is sized to hold an inner side of a ring airfoil; and a grip attached to said pusher in any location where it will not interfere with said rod.