Multi-layer core golf ball
First Claim
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1. A golf ball comprising:
- an inner core layer formed from a first thermoplastic composition and having a diameter of from 0.50 inches to 1.30 inches and a surface hardness of from 50 to 80 Shore C;
an intermediate core layer formed from a first thermoset composition and having a surface hardness of from 45 Shore D to 65 Shore D;
an outer core layer formed from a second thermoplastic composition and having a surface hardness of 80 Shore C or greater; and
a cover;
wherein the inner core layer comprises a plurality of projections disposed thereon;
wherein the surface hardness of the intermediate core layer is greater than the surface hardness of the inner core layer and the surface hardness of the outer core layer; and
wherein the inner core layer, the intermediate core layer, and the outer core layer each have a specific gravity of from 0.90 g/cc to 1.18 g/cc.
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Abstract
Golf balls comprising a multi-layer core and a cover are disclosed. The multi-layer core comprises at least three layers, including at least one thermoset layer and at least one thermoplastic layer. The innermost core layer is relatively small, having a diameter of from 0.50 inches to 1.30 inches, and has a plurality of projections disposed thereon.
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Citations
4 Claims
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1. A golf ball comprising:
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an inner core layer formed from a first thermoplastic composition and having a diameter of from 0.50 inches to 1.30 inches and a surface hardness of from 50 to 80 Shore C; an intermediate core layer formed from a first thermoset composition and having a surface hardness of from 45 Shore D to 65 Shore D; an outer core layer formed from a second thermoplastic composition and having a surface hardness of 80 Shore C or greater; and a cover; wherein the inner core layer comprises a plurality of projections disposed thereon; wherein the surface hardness of the intermediate core layer is greater than the surface hardness of the inner core layer and the surface hardness of the outer core layer; and wherein the inner core layer, the intermediate core layer, and the outer core layer each have a specific gravity of from 0.90 g/cc to 1.18 g/cc. - View Dependent Claims (2, 3, 4)
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Specification