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US 2011/0237352 A1Published application
Multi-layer core golf ball
AssigneeAcushnet Company
InventorsMichael J. Sullivan, Derek A. Ladd, Brian Comeau, Douglas S. Goguen
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Abstract
Golf balls consisting of a multi-layer core and a cover are disclosed. The multi-layer core comprises a thermoset rubber center, a thermoplastic intermediate core layer, and a thermoset rubber outer core layer.
Claims15
A golf ball comprising:
- a center formed from a first thermoset rubber composition and having a diameter of from 1.250 inches to 1.580 inches, a center hardness of from 40 Shore C to 90 Shore C, and a surface hardness of from 50 Shore C to 95 Shore C;
- an intermediate core layer formed from a thermoplastic composition and having a thickness of 0.005 inches to 0.100 inches and a surface hardness of greater than 60 Shore D;
- an outer core layer formed from a second thermoset rubber composition and having a thickness of 0.010 inches to 0.100 inches and a surface hardness of 50 Shore C or greater;
- an inner cover layer having a surface hardness of from 50 Shore D to 65 Shore D;
- and
- an outer cover layer having a surface hardness of from 40 Shore D to 60 Shore D;
- wherein each of the core layers has a specific gravity of 1.25 g/cc or less.
4 more elements
Dependencies are inferred from the claim text.