Golf ball with high coefficient of restitution
AssigneeCallaway Golf Company
InventorsDavid M. Bartels, Michael S. Yagley, Pijush K. Dewanjee, Steven S. Ogg
Life of this patent
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Abstract
The present invention is a golf ball that has a coefficient of restitution at 143 feet per second that is greater than 0.8015, and an USGA initial velocity less than 255.0 feet per second. The golf ball is preferably a solid three-piece golf ball with a thermosetting polyurethane cover, an ionomer blend intermediate layer and a polybutadiene core.
Claims14
A golf ball comprising:
- a core composed of a polybutadiene blend having a PGA compression ranging from 75 points to 120 points and having a diameter in the range of 1.45 inches to 1.64 inches;
- a cover disposed over the core, the cover having a thickness ranging from 0.015 inch to 0.044 inch;
- wherein the golf ball has a coefficient of restitution at 143 feet per second greater than 0.8015, and an USGA initial velocity less than 255.0 feet per second.
The golf ball according to claim 7 wherein the intermediate layer is composed of an ionomer blend of fifty parts of a sodium neutralized high acid methacrylic acid ionomer and fifty parts of a zinc neutralized high acid methacrylic acid, the intermediate layer having a hardness ranging from 62 Shore D to 75 Shore D.
A golf ball comprising:
- a core composed of a polybutadiene blend;
- an intermediate disposed about the core, the intermediate layer composed of a blend of ionomers;
- a cover disposed over the intermediate layer, the cover composed of a thermosetting polyurethane material;
- wherein the golf ball has a coefficient of restitution at 143 feet per second greater than 0.7964, and an USGA initial velocity less than 255.0 feet per second.
A golf ball comprising:
- a core composed of a polybutadiene blend, having a diameter between 1.45 inches and 1.55 inches, and having a PGA compression between 70 points and 110 points;
- an intermediate layer disposed about the core, the intermediate layer composed of a blend of ionomers, having a thickness between 0.040 inch and 0.080 inch, and a Shore D hardness ranging from 62 to 75 as measured according to ASTM-D2290;
- and
- a cover disposed over the intermediate layer, the cover composed of a thermosetting polyurethane material, having a thickness between 0.015 inch and 0.040 inch;
- wherein the golf ball has a coefficient of restitution at 143 feet per second greater than 0.7964, and an USGA initial velocity less than 255.0 feet per second.
Dependencies are inferred from the claim text.