Multi-layer golf ball with reaction injection molded polyurethane component
AssigneeCallaway Golf Company
InventorsViktor M. Keller, Thomas J. Kennedy, III, William M. Risen, Jr., Michael John Tzivanis, Michael J. Sullivan
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Abstract
Disclosed herein is a multi-layer golf ball having a soft outer cover. The golf ball has a core, one or more mantle or inner cover layers with a Shore D hardness of 60 or more, and an outer cover with a Shore D hardness of 53 or less. In a particularly preferred form of the invention, the inner and/or outer cover layers comprise a reaction injection molded polyurethane. The golf ball of the invention has exceptionally soft feel and high spin rates on short shots of 80 yards or less and, particularly, 40 yards or less, while maintaining good distance and average spin on full shots.
Claims11
A golf ball comprising:
- a core;
- an inner cover layer disposed on the core, the inner cover layer having a Shore D hardness of at least 60, and
- an outer cover layer disposed on the inner cover layer, the outer cover layer having a Shore D hardness of less than 53,
- wherein the inner cover layer comprises at least one member selected from the group consisting of polycarbonates, reaction-injection-molded polyurethanes, styrene-butadiene elastomers and combinations thereof, and wherein the outer cover layer comprises a reaction-injection-molded polyurethane.
Dependencies are inferred from the claim text.