Multiple concentric section golf ball

Abstract

A multi-section golf ball comprising first, second, third, and fourth ball sections each having a spherical outer surface, and all sections having a common center; the first section being an inner core closest to the center and consisting of substantially incompressible material; the second section being an intermediate core in the form of a shell surrounding the inner core, the second section consisting essentially of carbonaceous material; the third section being an outer core in the form of a shell surrounding the intermediate core, the third section consisting essentially of an elastomer; the fourth section being a cover in the form of a shell surrounding the outer core; whereby the radius of gyration and spin rate of the golf ball can be controlled by selection of the weight, density, and size of each of the first, second and third sections.

Dependencies are inferred from the claim text.