Multi-layer core golf ball
First Claim
Patent Images
1. A golf ball comprising:
- a center formed from a first rubber composition and having a diameter of from 1.300 inches to 1.520 inches, a center hardness of from 35 Shore C to 70 Shore C and a surface hardness of from 50 Shore C to 95 Shore C;
an intermediate core layer formed from a second rubber composition and having a surface hardness of 85 Shore C or greater;
an outer core layer formed from a third rubber composition and having a surface hardness of 80 Shore C or greater; and
a cover layer formed from a composition having a material hardness of from 30 Shore D to 65 Shore D;
wherein the surface hardness of the intermediate core layer is greater than the surface hardness of the center and the surface hardness of the outer core layer.
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Abstract
Golf balls consisting of a multi-layer core and a cover are disclosed. The multi-layer core consists of a large center and a thin outer core layer that are both soft relative to a hard, thin intermediate core layer.
61 Citations
20 Claims
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1. A golf ball comprising:
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a center formed from a first rubber composition and having a diameter of from 1.300 inches to 1.520 inches, a center hardness of from 35 Shore C to 70 Shore C and a surface hardness of from 50 Shore C to 95 Shore C; an intermediate core layer formed from a second rubber composition and having a surface hardness of 85 Shore C or greater; an outer core layer formed from a third rubber composition and having a surface hardness of 80 Shore C or greater; and a cover layer formed from a composition having a material hardness of from 30 Shore D to 65 Shore D; wherein the surface hardness of the intermediate core layer is greater than the surface hardness of the center and the surface hardness of the outer core layer. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A golf ball consisting essentially of:
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a core having an overall diameter of from 1.580 inches to 1.660 inches, an overall core compression of from 85 to 115, and consisting of; a center formed from a first rubber composition and having a diameter of from 1.350 inches to 1.500 inches, a center hardness of from 50 Shore C to 65 Shore C, and a surface hardness of from 70 Shore C to 85 Shore C; an intermediate core layer formed from a second rubber composition and having a surface hardness of 85 Shore C or greater; and an outer core layer formed from a third rubber composition; and a cover layer formed from a polyurethane, polyurea, or polyurethane-urea hybrid composition having a flexural modulus of from 12,000 psi to 24,000 psi and a material hardness of from 40 Shore D to 60 Shore D; wherein the surface hardness of the intermediate core layer is greater than the surface hardness of the center and the surface hardness of the outer core layer. - View Dependent Claims (17, 18, 19, 20)
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Specification