Multi-layer golf ball
First Claim
Patent Images
1. A golf ball consisting essentially of:
- an inner core layer formed from a thermoplastic composition and having a diameter of 1.2 inches or greater, a center hardness (Hcenter) of 60 Shore C or greater, and an outer surface hardness (Hcenter surface) of 80 Shore C or greater;
an intermediate core layer formed from a thermoplastic composition having a material hardness (Hintermediate core material) of 83 Shore C or greater;
an outer core layer formed from a highly neutralized polymer composition having a material hardness (Houter core material) of 35 Shore D or greater;
an inner cover layer formed from a thermoplastic composition having a material hardness (Hinner cover material) of 95 Shore C or less; and
an outer cover layer formed from a composition selected from the group consisting of polyurethanes, polyureas, and copolymers and blends thereof;
wherein a core structure consisting of the inner core layer, the intermediate core layer, and the outer core layer has a diameter of from 1.40 inches to 1.55 inches.
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Abstract
Multi-piece golf balls having a multi-layered solid core and multi-layered cover are provided.
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Citations
20 Claims
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1. A golf ball consisting essentially of:
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an inner core layer formed from a thermoplastic composition and having a diameter of 1.2 inches or greater, a center hardness (Hcenter) of 60 Shore C or greater, and an outer surface hardness (Hcenter surface) of 80 Shore C or greater; an intermediate core layer formed from a thermoplastic composition having a material hardness (Hintermediate core material) of 83 Shore C or greater; an outer core layer formed from a highly neutralized polymer composition having a material hardness (Houter core material) of 35 Shore D or greater; an inner cover layer formed from a thermoplastic composition having a material hardness (Hinner cover material) of 95 Shore C or less; and an outer cover layer formed from a composition selected from the group consisting of polyurethanes, polyureas, and copolymers and blends thereof; wherein a core structure consisting of the inner core layer, the intermediate core layer, and the outer core layer has a diameter of from 1.40 inches to 1.55 inches. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A golf ball consisting essentially of:
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an inner core layer formed from a thermoplastic composition and having a diameter of from 1.100 inches to 1.400 inches, a center hardness (Hcenter) of from 50 Shore C to 75 Shore C, and an outer surface hardness (Hcenter surface) of from 60 Shore C to 85 Shore C; an intermediate core layer formed from a thermoplastic composition having a material hardness (Hintermediate core material) of 83 Shore C or greater; an outer core layer formed from a highly neutralized polymer composition and having an outer surface hardness (Houter core surface) of from 70 Shore C to 95 Shore C; an inner cover layer formed from a thermoplastic composition having a material hardness (Hinner cover material) of from 80 Shore C to 95 Shore C; and an outer cover layer formed from a composition selected from the group consisting of polyurethanes, polyureas, and copolymers and blends thereof. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20)
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Specification