Amusement devices: toys – Aerodynamically supported or retarded – Including rotary wing
Patent
1991-11-21
1992-12-22
DeMille, Danton D.
Amusement devices: toys
Aerodynamically supported or retarded
Including rotary wing
446 44, 273428, A63H 2712, A63B 6500
Patent
active
051730693
ABSTRACT:
An autorotative flyer comprises a circular root portion integral with a wing portion; the root being generally circular and providing a counterweight of from 55-85%, preferably 70-72%, of the total weight of the flyer and locating the center of gravity of the flyer behind the leading edge of the wing a distance equal to from 28-29% of the mean aerodynamic chord of the wing and at a spanwise distance from the root end of the flyer of from 10-21% of the root end to wing tip span; the wing of the flyer having curved leading and trailing edges and a curved tip with an integral spar along the leading edge and a wing area providing a wing loading of not more than about 0.5 lbs./ft.sup.2 ; and, optionally, scallops on the trailing edge of the wing and a vane on the edge of the root section concentric with the center of gravity.
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Litos Mark A.
Spierings Petrus A. M.
DeMille Danton D.
Mainstream Marketing, Inc.
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