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US 2017/0254667 A1Published application
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 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.
Claims4
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;
- 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.
5 more elements
Dependencies are inferred from the claim text.