Bi-wing flying disc

Details Bi-wing flying disc Bi-wing flying disc

1978-09-25

1982-02-16

Shapiro, Paul E.

Amusement devices: games

Problem eliciting response

A63H 2700

Patent

active

043156290

ABSTRACT:
A flying disc with a central opening utilizing a plurality of concentrically arranged annular sections with at least the innermost ring having a unique sloping surface resulting in improved stability in flight. In the two annular section version of the disc, it is comprised of an outer annular, lifting surface concentrically surrounding and connected to an inner annular ring by a series of struts providing a circular pattern of slots between the two sections. The inner annular ring is shaped to incorporate a continuous dihedral angle between the inner and outer edges of the inner ring that provides great lateral stability in all flight attitudes.

REFERENCES:
patent: 2953378 (1960-09-01), Veigne, Jr.
patent: 3580580 (1971-05-01), Wark
patent: 3724122 (1973-04-01), Gillespie
patent: 3765122 (1973-10-01), English
patent: 3828466 (1974-08-01), Geiger
patent: 3939602 (1976-02-01), Burke et al.
patent: 4045029 (1977-08-01), Katzmark
patent: 4104822 (1978-08-01), Rodgers
patent: 4182073 (1980-01-01), Tabet

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