Billiard ball consists of synthetic material with inhomogeneous density increasing from center to outside while maintaining defined weight and diameter

摘要

The billiard ball is of natural or synthetic material and of defined weight and diameter. The material has inhomogeneous density while maintaining the defined weight and diameter, so that the density increases from the ball center (2) to the outer surface (3), radially in all directions and continuously or in stages. The ball material is layered, with its density increasing from inside to outside. The ball core consists of one material, and a shell enclosing the ball is of a second material of a higher density, with a thin, hardened integrated surface layer (4). The ball material is a synthetic on synthetic resin base.