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US 2012/0071273 A1Published application
Golf ball having cross-core hardness differential and method for making it
AssigneeTaylor Made Golf Company, Inc.
InventorsHyun Jin Kim, Hong Guk Jeon, Kelvin Tsugio Okamoto
Life of this patent
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Abstract
A golf ball core that includes a center point having a first hardness value and/or first specific gravity value, and a surface having a second hardness value and/or second specific gravity value. The first hardness value, or first specific gravity value, is different from the second hardness value, or second specific gravity value, respectively.
Claims24
A 5-layer golf ball, comprising:
- a golf ball core comprising a center point having a first hardness value, and an outer surface having a second hardness value different from the first hardness value, wherein a gradient in hardness value between the first hardness value and the second hardness value across a radius of the golf ball core occurs in discrete increments, and wherein regions of the golf ball core having discrete hardness values are arranged concentrically about the center point;
- three or more intermediate layers enclosing the golf ball core;
- and
- a cover layer.
1 more element
A golf ball, comprising:
- a golf ball core comprising a center point having a first hardness value, and an outer surface having a second hardness value, different from the first hardness value, wherein a gradient in hardness value between the first hardness value and the second hardness value across a radius of the golf ball core occurs in discrete increments, and wherein regions of the golf ball core having discrete hardness values are arranged concentrically about the center point;
- two or more intermediate layers enclosing the golf ball core;
- and
- a cover layer, wherein at least one of the intermediate and cover layers comprises a modified ionomer.
1 more element
A golf ball, comprising:
- a golf ball core comprising a center point having a first hardness value, and an outer surface having a second hardness value, different from the first hardness value, wherein a gradient in hardness value between the first hardness value and the second hardness value across a radius of the golf ball core occurs in discrete increments, and wherein regions of the golf ball core having discrete hardness values are arranged concentrically about the center point;
- and
- two or more intermediate layers enclosing the golf ball core;
- and
- a cover layer, wherein at least one of the intermediate and cover layers comprises a block copolymer.
2 more elements
A method for forming a 5-piece golf ball core, comprising:
- providing a material that includes an unsaturated polymer and a peptizer;
- and
- molding the material into the golf ball core that has a center point and an outer surface;
- wherein, after processing the golf ball core, the center point has a first hardness value and the outer surface has a second hardness value, different from the first hardness value;
- wherein the gradient in hardness value between the first hardness value and the second hardness value, across a radius of the golf ball core, occurs in discrete increments;
- and
- and wherein regions of the golf ball core having discrete hardness values are arranged concentrically about the center point.
4 more elements
Dependencies are inferred from the claim text.