Inflatable game ball

Games using tangible projectile – Projectile – per se; part thereof or accessory therefor – Having self-contained means for inflating – pressurizing,...

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Details

473604, 473607, 473609, 473597, 473599, A63B 4108

Patent

active

056741499

ABSTRACT:
An inflatable ball for ball games comprises an outer ball having interconnected parts consisting of twelve equilateral pentagons (1) and twenty equiangular hexagons (2). Each pentagon (1) is enclosed by five hexagons (2) and at the location of the connection between a pentagon (1) and a hexagon (2) the sides connected to one another are of equal length. In order to minimize, and preferably reduce to zero, the difference in stress in the material of the hexagons (2) and pentagons (1) when the ball is in the inflated state, each of the hexagons (2) has three sides (a) of relatively great length connected to a pentagon (1), and three sides (b) of relatively small length connected to a hexagon (2), the length of the short sides (b) being at least 0.69 times the length of the long sides (a). Preferably, b=0.839 a.

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J. Seidel, "Meetkunde van de ruimte", De Voetbal.
Van Werven, "Deer Balanced New Cut", SS 2203, Sep. 1992.
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Back cover of 1991 catalog, Silver Star Enterprises (PVT) Ltd..
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