Patent ID: 7361102

Claim:
A golf ball comprising an inner core, an outer core, an inner cover, and an outer cover wherein the inner core is encased by an outer core wherein the inner core has a volume greater than the outer core, inner cover, or outer cover, and the inner core and outer core are comprised of polybutadiene, a crosslinker, and a co-crosslinker, wherein the inner core has a specific gravity ρ 12 , the outer core has a specific gravity ρ 14 , the inner cover has a specific gravity ρ 16 , and the outer cover has a specific gravity ρ 18 , wherein the relationship between the specific gravities is expressed by the mathematical expression: ρ 16 ≧ρ 18 ≧ρ 14 ≧ρ 12 , and wherein the volume relationship of the inner core (V 12 ), outer core (V 14 ), inner cover (V 16 ), and outer cover (V 18 ) is represented by the mathematical relationship: V 12 >2.5(V 14 +V 16 +V 18 ).