Amusement devices: toys – Aerodynamically supported or retarded – Spinning disc
Reexamination Certificate
2001-08-17
2003-07-01
Banks, Derris H. (Department: 3712)
Amusement devices: toys
Aerodynamically supported or retarded
Spinning disc
C446S253000
Reexamination Certificate
active
06585552
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The subject invention relates generally to toys and amusement devices and more particularly to an aerodynamic disc consisting of a circular center airfoil centered within a circular outer rim or ring.
2. Description of Related Art
Flying saucer devices, or so-called “frisbees,” are known in the prior art. Such devices have been used as throwing implements or toys, typically in games of “catch.” Such devices typically employ a central disc portion and a rim extending downwardly from and circumscribing the central disc, for example, as disclosed in U.S. Pat. No. 3,359,678.
SUMMARY OF THE INVENTION
The present invention provides a flying disc toy including a cylindrical rim having a circular top edge running parallel to a circular bottom edge. A flat circular central airfoil having a circular edge is attached to the inner circumference of the rim such that the vertical height of the cylindrical rim extends beyond the circular edge in opposite directions by equal amounts. In addition, the central airfoil has a small aperture at its symmetrical center through which a cord of elastic or inelastic material is passed and tethered to the airfoil by a knot, either through a spherical bead or knot. When thrown, the flying disc provides increased gyroscopic effect and stability. The cord tethered to the disc may be used for catching, throwing, holding, or moving the disc about while it is spinning.
REFERENCES:
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patent: 3566532 (1971-03-01), Wilson
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patent: 4986790 (1991-01-01), Boury
patent: 5127390 (1992-07-01), Paulson
patent: 5512028 (1996-04-01), Sparks, III
patent: 5816965 (1998-10-01), Kotler
patent: 6113453 (2000-09-01), Stuffelbeam
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