Recreational flying ring having primary and secondary airfoils

Details Recreational flying ring having primary and secondary airfoils Recreational flying ring having primary and secondary airfoils

1985-10-07

1987-06-02

Yu, Mickey

Amusement devices: toys

Aerodynamically supported or retarded

Spinning disc

A63H 2700

Patent

active

046699961

ABSTRACT:
A recreational spinning ring includes a primary and secondary airfoil. The primary airfoil is located on the bottom of the ring near the outside rim and provides a downward force while it is in flight. An upward force is provided by the secondary airfoil located on the top surface of the ring closer to the inside edge. The downward force of the primary airfoil counterbalances the excess lift provided by the secondary airfoil so that sufficient net lift remains to keep the ring airborn. The improved flying ring has the ability to fly in an exceptionally straight path over intermediate and long range distances.

REFERENCES:
patent: 248901 (1881-11-01), Wetherill
patent: 1991689 (1935-02-01), McClintock
patent: 3580580 (1971-05-01), Wark
patent: 3765122 (1973-10-01), English
patent: 4307535 (1981-12-01), Martin
patent: 4456265 (1984-06-01), Adler
patent: 4560358 (1985-12-01), Adler
"The Invention of the Frisbee", Steven Caney's Invention Book, pp. 97-102, .COPYRGT. 1985, Workman Pub. Co., N.Y., N.Y.

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