20100130317 | NEW KIND OF FOOTBALL WITH IMPROVED ROUNDNESS - Ball, composed of an inflatable inner ball from a thin rubbery material and of an outer skin from a leathery material, usually a fibre reinforced flexible plastic, composed in balls of the first type of twelve more or less pentagonal parts and twenty more or less hexagonal parts and in balls of the second type of six more or less square parts and eight more or less hexagonal parts, where most of the edges do not have a kinked form but follow a circular course, so that they follow accurately the curvature of the sphere. An even better approximation of the sphere form is obtained, if the dimensions of the parts are changed in such a way that all corners of these parts are lifted towards the sphere surf ace and do not lie slightly under this surface as in the aforementioned patent. | 05-27-2010 |