| US 7,537,529 B2 | ||
| Golf ball with negative hardness gradient core | ||
| David A. Bulpett, Boston, Mass. (US); Brian Comeau, Berkley, Mass. (US); Derek A. Ladd, Acushnet, Mass. (US); and Douglas S. Goguen, New Bedford, Mass. (US) | ||
| Assigned to Acushnet Company, Fairhaven, Mass. (US) | ||
| Filed on Jul. 03, 2007, as Appl. No. 11/772,903. | ||
| Prior Publication US 2009/0011862 A1, Jan. 08, 2009 | ||
| Int. Cl. A63B 37/06 (2006.01) | ||
| U.S. Cl. 473—374 | 17 Claims |
| 1. A golf ball comprising:
a core having an outer surface and a geometric center and being formed from a substantially homogenous formulation throughout;
an intermediate layer; and
a cover layer;
wherein the surface and the center have a hardness, the hardness of the surface being lower than the hardness of the center,
and wherein a ratio of antioxidant to initiator used in said formulation is greater than about 0.40 when normalized to 100%
activity.
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