Comba ball with magnus effect
First Claim
1. A ball having improved sphericity evidenced by a circumference with a selected measurement (C), comprising:
- a plurality of interconnected panels comprising first and second groups of panels which combine to form a sphere,said first group of panels defining at least two different surface areas of said ball corresponding to polar hemispheres of said sphere;
said second group of panels defining an area of said surface in the form of a circumferential band having a width, and said area having generally parallel sides along its length with at least three undulations and disposed in the equatorial zone of said surface of the said ball, creating a separation between and joining said polar hemispheres defined by said first group of panels;
whereby the width of said band is modified to improve the sphericity of the ball and obtain a ball of a selected circumference with measurement (C).
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Abstract
This invention refers to the structure for a ball or ball cover that comprises a plurality of interconnected panels comprising first and second groups of panels which combined form a sphere. The first group of panels define at least two different surface areas of the ball or ball cover disposed at polar extremes on the surface of the sphere and the second group of panels define an area of the surface in the form of a ring, with at least three undulations and disposed in the equatorial zone of the surface of the ball or ball cover, creating a separation between the polar extremes defined by the first group of panels; whereby the width of the ring is modified to improve the sphericity of the ball or ball cover and obtaining a ball of a selected measurement (C).
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Citations
15 Claims
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1. A ball having improved sphericity evidenced by a circumference with a selected measurement (C), comprising:
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a plurality of interconnected panels comprising first and second groups of panels which combine to form a sphere, said first group of panels defining at least two different surface areas of said ball corresponding to polar hemispheres of said sphere; said second group of panels defining an area of said surface in the form of a circumferential band having a width, and said area having generally parallel sides along its length with at least three undulations and disposed in the equatorial zone of said surface of the said ball, creating a separation between and joining said polar hemispheres defined by said first group of panels; whereby the width of said band is modified to improve the sphericity of the ball and obtain a ball of a selected circumference with measurement (C). - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. In an inflatable ball for ball games comprising a circumference with a selected measurement (C), a surface comprising a plurality of interconnected basic shapes comprising eighteen squares, twenty four trapezoids and eight equilateral triangles, said squares having four sides of substantially equal length (a) and two corresponding diagonals of length (d), said triangles having three sides of substantially equal length (c) and a central point (Y) and said trapezoids having four sides composed of two legs of said length (a), one base of said length (a) and a smaller side of said length (c), each of said trapezoids being enclosed by three of said squares and one of said triangles wherein said sides (c) of said trapezoids are connected to said sides (c) of said equilateral triangles and said sides (a) of said trapezoids are connected to said sides (a) of said squares, and wherein said interconnected basic shapes are grouped into three groups of sections, two groups of sections comprising nine trapezoids, six squares and four equilateral triangles forming a polar hemisphere with a central point (Y) with one of said four triangles located exactly in the polar extreme, and a third group of sections comprising six trapezoids and six squares forming an undulated equatorial band, having generally parallel sides along its length said ball comprising two of said polar hemispheres joined along adjacent sides to adjacent sides of the equatorial band, wherein the improvement comprises:
- decreasing the width of the equatorial band by between 20% and 40%, creating a reduction in the measurement of the polar axis with respect to the measurement of the equatorial axis, forming said equatorial band from an appropriate material, whereby a ball with a selected measurement of circumference (C), improved sphericity and improved characteristics is obtained.
- View Dependent Claims (10, 11, 12, 13, 14, 15)
Specification