Patent ID: 7270611

Claim:
A golf ball comprising a core having a plurality of layers, an intermediate layer enclosing the core to form a sphere, and a cover enclosing the intermediate layer, wherein each component has a Shore D hardness, a Deflection amount, an initial velocity (in m/s) and a thickness (in mm), the Deflection amount being defined as an amount of deflection (in mm) under load of a spherical body incurred when the load is increased from an initial value of 98 N (10 kgf) to a final value of 1275 N (130 kgf), and the ball satisfies the following requirements (1) to (3): (1) (Shore D hardness of the cover)−(Shore D hardness of the intermediate layer)>0, (2) (initial velocity of the sphere)−(initial velocity of the core)>−0.2, and (3) 0.90≦(Deflection amount of the sphere)/(Deflection amount of the core)≦1.00.