Golf ball
AssigneeCallaway Golf Company
InventorsMartin P. Wai, David L. Felker, William Priest
Life of this patent
Estimating the term…
Abstract
A geometric-shaped core for a golf ball has a plurality of outwardly extending projections formed on a spherical central portion thereof. A layer of a relatively less resilient material is applied in the interstitial space between the projections on the surface of the core, and a cover is applied over the core and interstitial layer. The geometric-shaped core is manufactured by first providing flexible, resilient, honeycombed inserts to be used in a conventional compression mold. The inserts are placed into the upper and lower mold cavities, the core material is added, and the geometric-shaped golf ball core is compression molded.
Claims18
A golf ball comprising:
- a core having a plurality of projections formed on an outer surface thereof, each of the plurality of projections having a top surface;
- an interstitial layer associated with the core, the interstitial layer having a top surface substantially co-planar with the top surface of each of the plurality of projections;
- and
- a cover surrounding the core and the interstitial layer.
A golf ball comprising:
- a core having a central portion and a plurality of projections projecting outward from the central portion, each of the plurality of projections having a top end, the central portion and the plurality of projections defining an interstitial space;
- an interstitial layer disposed within the interstitial space, the interstitial layer having a top surface substantially co-planar with the top end of each of the plurality of projections;
- and
- a cover encompassing the core and the interstitial layer;
- wherein the core is composed of a material having a shore D hardness greater than the shore D hardness of the interstitial layer.
A golf ball comprising:
- a core having a central portion and a plurality of projections projecting outward from the central portion, each of the plurality of projections having a top end, the central portion and the plurality of projections defining an interstitial space;
- a polyurethane material disposed within the interstitial space thereby forming an interstitial layer, the interstitial layer having a top surface substantially co-planar with the top end of each of the plurality of projections;
- and
- a cover encompassing the core and the interstitial layer;
- wherein the core comprises a polybutadiene material having a shore D hardness greater than the shore D hardness of the interstitial layer.
Dependencies are inferred from the claim text.