Patent ID: 8475298
Filing Date: 2013-07-02
Classification: A63B

Abstract:
1. A golf ball comprising: a core comprising an inner core and an outer core disposed over the inner core, the inner core having a deflection of at least 0.210 inch under a load of 100 kilograms, the outer core having a Shore D hardness ranging from 50 to 60 and the core having a deflection ranging from 0.120 inch to 0.095 inch under a load of 100 kilograms; an inner mantle layer disposed over the outer core, the inner mantle layer having a thickness ranging from 0.070 inch to 0.090 inch, the inner mantle layer material having a plaque Shore D hardness ranging from 36 to 44; an outer mantle layer disposed over the inner mantle layer, the outer mantle layer having a thickness ranging from 0.025 inch to 0.040 inch, the outer mantle layer composed of an ionomer material, the outer mantle layer material having a plaque Shore D hardness ranging from 65 to 71; and a cover layer disposed over the outer mantle layer, the cover having a thickness ranging from 0.025 inch to 0.040 inch, the cover composed of a thermoplastic polyurethane material, the cover material having a plaque Shore D hardness ranging from 40 to 50, and the on cover Shore D hardness less than 56; wherein a dual core deflection differential of the inner core having a deflection of at least 0.210 inch under a load of 100 kilograms and the core having a deflection ranging from 0.120 inch to 0.095 inch under a load of 100 kilograms allows for a low spin of a golf ball hit off a tee to provide greater distance, and a high spin of a golf ball hit on approach shots, wherein the golf ball has a coefficient of restitution of at least 0.79 and a deformation of at least 0.07 mm under a 100 kilogram loading.