Flying disc
First Claim
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1. A flying disc comprising:
- an annular member defining an open inner area and comprising an air-foil shaped cross-section defined by different curvature on opposite surfaces and having a thickness that depends on the radial point at which the thickness is measured; and
a thin sheet of a different material having a lighter weight for a volume bounded by an area of unit size and by the thickness of said sheet at said area than the average weight of a volume of said annular member bounded by an area of said unit size and by the thickness of said annular member at the thickest point thereof, said sheet having an outer perimeter affixed to said annular member to cover said open inner area.
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Abstract
A molded flying disc with most of the weight concentrated in an outer annular ring. The central opening in the ring is covered by a thin sheet of material, such as plastic or cloth, stronger than a sheet of the molded material of the same thickness and diameter. The perimeter of the sheet is attached to the ring.
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Citations
42 Claims
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1. A flying disc comprising:
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an annular member defining an open inner area and comprising an air-foil shaped cross-section defined by different curvature on opposite surfaces and having a thickness that depends on the radial point at which the thickness is measured; and a thin sheet of a different material having a lighter weight for a volume bounded by an area of unit size and by the thickness of said sheet at said area than the average weight of a volume of said annular member bounded by an area of said unit size and by the thickness of said annular member at the thickest point thereof, said sheet having an outer perimeter affixed to said annular member to cover said open inner area. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A flying disc comprising:
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a central sheet comprising a perimeter in substantially one plane; a separate annular section attached to and extending outwardly beyond said perimeter and curved in one direction from said plane, whereby said sheet and said annular section combine to define a dish-shaped structure having a concave side and a convex side, said annular section comprising a rounded cross-section that is thickest at an annular position between the edge of said annular section and said perimeter of said sheet; and
a plurality of spoilers on said convex side, each of said spoilers extending in a direction comprising a radial component. - View Dependent Claims (21, 22, 23, 24, 25, 26, 27, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42)
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28. The method of attaching a peripheral region of a polyester disc to an inner peripheral region of a polyethylene ring comprising the steps of:
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coating said peripheral region of said disc with an adhesive in liquid form comprising neoprene and 1, 1, 1-trichloroethane solvent; oxidizing said inner peripheral region of said ring; coating the resultant oxidized region with said adhesive; allowing said adhesive on said disc and said ring to dry from approximately fifteen minutes to three hours; and pressing the adhesive-coated region of said disc against the adhesive-coated region of said ring with a pressure of between approximately 250 and 1000 pounds per square inch. - View Dependent Claims (29)
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Specification