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US 10,369,420 B2Granted
Multi-layer golf ball
AssigneeAcushnet Company
InventorMichael J. Sullivan
Life of this patent
Estimating the term…
Abstract
Multi-piece golf balls having a multi-layered solid core and multi-layered cover are provided.
Claims6
A golf ball consisting essentially of:
- an inner core layer formed from a thermoplastic composition and having 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 ionomeric and non-ionomeric E/X- and E/X/Y-type acid copolymers of ethylene (E), a C3-C8 α,β-ethylenically unsaturated carboxylic acid (X), and an optional softening monomer (Y);
- and blends of two or more 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.
5 more elements
A golf ball consisting essentially of:
- an inner core layer formed from a thermoplastic composition and having 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 ionomeric and non-ionomeric E/X- and E/X/Y-type acid copolymers of ethylene (E), a C3-C8 α,β-ethylenically unsaturated carboxylic acid (X), and an optional softening monomer (Y);
- and blends of two or more thereof.
4 more elements
Dependencies are inferred from the claim text.