Patent ID: 6096255
Filing Date: 2000-08-01
Classification: A63B,B29C,B29D,B29K,B29L

Abstract:
A method of making a ball, comprising:a) forming centers;b) providing a bottom mold plate with a plurality of cavities, a top mold plate with a plurality of corresponding cavities and a center mold plate with a plurality of corresponding protrusions;c) forming a plurality of core hemispherical cups from elastomeric material by:i) placing the elastomeric material in the cavities of the bottom mold plate and the top mold plate,ii) locating the center mold plate between the top mold plate and the bottom mold plate; andiii) compressing the mold plates to form the cups in the bottom and top mold plate cavities, the step of compressing the mold plates further includes elevating the temperature of the elastomeric material to a first temperature less than a cure activation temperature of the material so that the material is pliable;d) removing the center mold plate from between the top and bottom mold plates;e) placing the centers in the cups in the top mold plate;f) locating the bottom mold plate over the top mold plate;g) joining the cups around the centers to form substantially spherical cores; andh) molding a cover around the cores.