Patent ID: 7168196

Claim:
A rotary device for attachment to an underside of a vehicle, said underside of said vehicle having a mounting surface, at least a portion of said mounting surface being in a horizontal plane, said rotary device comprising: an axle, wherein said axle is tilted at an angle with respect to said horizontal plane, said angle ranging between 50 and 60 degrees; at least two opposing blades, said opposing blades being flexible and being shaped to resemble human feet; means for rotatably coupling said at least two opposing blades to said axle; said at least two opposing blades depending from said means for rotatably coupling at an angle such that said at least two opposing blades form a conical surface of rotation when said at least two opposing blades rotate; means for applying tension between said at least two opposing blades, wherein said means for applying tension is attached between said at least two opposing blades, and whereby when said at least two opposing blades rotate, said means for applying tension prevents said at least two opposing blades from being deformed by centrifugal forces; wherein when the vehicle is in motion, said rotary device is disposed in an airsteam, said airstream urging said opposing blades to rotate about said axle, creating the illusion of feet running underneath and propelling said vehicle.