Foam-core golf balls
First Claim
1. A golf ball comprising a core, an intermediate layer and a cover, wherein the intermediate layer is comprised of a highly neutralized polymer and has its specific gravity reduced to less than 0.95, wherein the reduction in specific gravity of the intermediate layer is between 3% and 15% to minimize the reduction in the coefficient of restitution of the ball, and wherein the ball has a moment of inertia of greater than 85 g·
- cm2 and the core and intermediate layer has an overall reduction of specific gravity of at least 3%.
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Accused Products
Abstract
A golf ball with a controlled moment of inertia and controlled spin rate is disclosed. The ball has an intermediate layer positioned between the core and the cover and the intermediate layer has a reduced specific gravity. Preferably, this reduction is less than about 30% in specific gravity and the reduction in the coefficient of restitution is less than about 2%.
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Citations
2 Claims
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1. A golf ball comprising a core, an intermediate layer and a cover, wherein the intermediate layer is comprised of a highly neutralized polymer and has its specific gravity reduced to less than 0.95, wherein the reduction in specific gravity of the intermediate layer is between 3% and 15% to minimize the reduction in the coefficient of restitution of the ball, and wherein the ball has a moment of inertia of greater than 85 g·
- cm2 and the core and intermediate layer has an overall reduction of specific gravity of at least 3%.
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2. A golf ball comprising a core, an intermediate layer and a cover, wherein the intermediate layer is comprised of a highly neutralized polymer, has its specific gravity reduced to less than 0.95, wherein the reduction in specific gravity of the intermediate layer is between 3% and 15% to minimize the reduction in the coefficient of restitution of the ball, and wherein the ball has a moment of inertia of greater than 85 g·
- cm2 and further comprises a thin dense layer having a specific gravity of greater than 2 surrounding the intermediate layer.
Specification
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- Resources
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Current AssigneeAcushnet Company (FILA Holdings Corp.)
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Original AssigneeAcushnet Company (FILA Holdings Corp.)
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InventorsSullivan, Michael J., Hebert, Edmund A., Ladd, Derek A.
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Primary Examiner(s)GORDEN, RAEANN
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Application NumberUS11/284,382Publication NumberTime in Patent Office1,625 DaysField of Search473/373, 473/374US Class Current473/373CPC Class CodesA63B 37/0003 Golf ballsA63B 37/0039 characterised by the materialA63B 37/0041 Coefficient of restitutionA63B 37/0047 Density; Specific gravityA63B 37/0082 Density; Specific gravity
