Multi-layer core golf ball
First Claim
Patent Images
1. A golf ball comprising a core and a cover, wherein the core has an overall diameter of from 1.40 inches to 1.62 inches and consists of:
- a center having a diameter of from 0.125 inches to 0.750 inches and a surface hardness of 80 Shore C or greater;
an intermediate core layer having a surface hardness of less than 80 Shore C; and
an outer core layer having a surface hardness of 80 Shore C or greater;
wherein the specific gravity of the intermediate core layer is substantially the same as the specific gravity of the outer core layer, andwherein the intermediate core layer and the outer core layer have a specific gravity of from 1.13 g/cc to 1.18 g/cc.
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Accused Products
Abstract
Golf balls consisting of a multi-layer core and a cover are disclosed. The multi-layer core consists of a small, hard center enclosed by a soft intermediate core layer and an outer core layer.
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Citations
20 Claims
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1. A golf ball comprising a core and a cover, wherein the core has an overall diameter of from 1.40 inches to 1.62 inches and consists of:
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a center having a diameter of from 0.125 inches to 0.750 inches and a surface hardness of 80 Shore C or greater; an intermediate core layer having a surface hardness of less than 80 Shore C; and an outer core layer having a surface hardness of 80 Shore C or greater; wherein the specific gravity of the intermediate core layer is substantially the same as the specific gravity of the outer core layer, and wherein the intermediate core layer and the outer core layer have a specific gravity of from 1.13 g/cc to 1.18 g/cc. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A golf ball comprising a core and a cover, wherein the core has an overall diameter of from 1.40 inches to 1.62 inches and consists of:
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a center having a diameter of from 0.125 inches to 0.750 inches and a surface hardness of 80 Shore C or greater; an intermediate core layer having a surface hardness of less than 80 Shore C; and an outer core layer having a surface hardness of 80 Shore C or greater; wherein the specific gravity of the intermediate core layer is substantially the same as the specific gravity of the outer core layer, and wherein a subassembly consisting of the center and the intermediate core layer has a compression of 55 or less. - View Dependent Claims (8, 9, 10, 11, 12, 13)
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14. A golf ball comprising a core and a cover, wherein the core has an overall diameter of from 1.40 inches to 1.62 inches and consists of:
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a center having a diameter of from 0.125 inches to 0.750 inches and a surface hardness of 80 Shore C or greater; an intermediate core layer having a surface hardness of less than 80 Shore C; and an outer core layer having a surface hardness of 80 Shore C or greater; wherein the specific gravity of the intermediate core layer is substantially the same as the specific gravity of the outer core layer, and wherein the cover consists of; an inner cover layer having a surface hardness of 65 Shore D or greater and a thickness of from 0.020 inches to 0.080 inches; and an outer cover layer having a surface hardness of 60 Shore D or less and a thickness of from 0.015 inches to 0.055 inches. - View Dependent Claims (15, 16, 17, 18, 19, 20)
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Specification