Foam-core golf balls
AssigneeAcushnet Company
InventorsMichael J. Sullivan, Derek A. Ladd, Edmund A. Herbert
Life of this patent
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Abstract
A golf ball with a controlled moment of inertia and controlled spin rate is disclosed. In one embodiment, the golf ball comprises a core, an intermediate layer and a cover, wherein the intermediate layer comprises a foamed highly neutralized polymer, has its specific gravity reduced to less than about 1.05, wherein the reduction in the specific gravity of the intermediate layer is less than about 25% to minimize the reduction in the coefficient of restitution of the golf ball to about 6% or less.
Claims19
A golf ball comprising a core, an intermediate layer and a cover, wherein the intermediate layer comprises a foamed highly neutralized polymer, has its specific gravity reduced to less than about 1.05, wherein the reduction in the specific gravity of the intermediate layer is less than about 25% to minimize the reduction in the coefficient of restitution of the golf ball to about 6% or less.
A golf ball comprising a sub-assembly of at least a core and an intermediate layer, wherein the subassembly has a diameter of at least 1.45 inches and the core has a diameter of 0.75 inch or less, wherein the intermediate layer comprises a foamed highly neutralized polymer and the specific gravity of the intermediate layer is reduced by 3% to 15% and the reduction in coefficient of restitution of the subassembly is less than about 6%.
A golf ball comprising a sub-assembly of at least a core and an intermediate layer, wherein the subassembly has a diameter of at least 1.45 inches and the core has a diameter of 0.75 inch or less, wherein the intermediate layer comprises a foamed highly neutralized polymer and wherein the specific gravity of the intermediate layer is reduced by 15% to 32% and the reduction in coefficient of restitution of the subassembly is less than 13%.
A golf ball comprising a subassembly of at least a core and an intermediate layer, wherein subassembly is encased in a cover, wherein the intermediate layer comprises a foamed highly neutralized polymer and the intermediate layer has its specific gravity reduced to less than 0.95 and the specific gravity of the subassembly is reduced by 2% to 5% and the reduction in coefficient of restitution of the subassembly is reduced less than 2%.
A golf ball comprising a subassembly of at least a core and an intermediate layer, wherein subassembly is encased in a cover, wherein the intermediate layer comprises a foamed highly neutralized polymer, wherein the intermediate layer has its specific gravity reduced to less than 0.95 and wherein the specific gravity of the subassembly is reduced by 5% to 8% and the reduction in coefficient of restitution of the subassembly is less than 3%.
Dependencies are inferred from the claim text.