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US 8,939,850 B2Granted
Multi-layer core golf ball
AssigneeAcushnet Company
InventorsMichael J. Sullivan, Derek A. Ladd
Life of this patent
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Abstract
Golf balls comprising a multi-layer core and a single-, dual-, or multi-layer cover are disclosed. The multi-layer core comprises a thermoplastic center and a thermoplastic outer core layer that are both soft relative to a hard, thermoset intermediate core layer.
Claims7
A golf ball comprising:
- a center formed from a first thermoplastic composition and having a center hardness of from 20 Shore C to 90 Shore C, a diameter of from 0.50 inches to 1.50 inches, and a specific gravity of from 0.50 g/cc to 1.18 g/cc;
- an intermediate core layer formed from a rubber composition and having a surface hardness of from 40 Shore D to 70 Shore D;
- an outer core layer formed from a second thermoplastic composition and having a surface hardness of from 20 Shore C to 90 Shore C;
- and
- a cover;
- wherein the intermediate core layer has a surface hardness that is greater than both the center hardness of the center and the surface hardness of the outer core layer.
3 more elements
Dependencies are inferred from the claim text.