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US 2017/0282019 A1Published application
Multi-layer golf ball
AssigneeAcushnet Company
InventorMichael J. Sullivan
Life of this patent
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Abstract
Multi-piece golf balls having a multi-layered solid core and multi-layered cover are provided.
Claims5
A golf ball consisting essentially of:
- an inner core layer formed from a thermoset composition and having a diameter of 1.2 inches or greater, a center hardness (Hcenter) of 45 Shore C or greater, and an outer surface hardness (Hcenter surface) of from 55 Shore C to 90 Shore C;
- an intermediate core layer formed from a thermoplastic composition having a material hardness (Hintermediate core material) of 98 Shore C or less;
- an outer core layer formed from an ionomer 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;
- an intermediate cover layer formed from a thermoplastic composition having a material hardness (Hintermediate cover material) of 80 Shore C or greater;
- and an outer cover layer formed from a composition selected from the group consisting of polyurethanes, polyureas, and copolymers and blends thereof;
- wherein Hintermediate cover material is greater than Houter core material.
4 more elements
Dependencies are inferred from the claim text.