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US 2013/0210549 A1Published application
Golf Ball With Specified Core Compression Ratio
AssigneeNIKE, Inc.
InventorsHideyuki Ishii, Yasushi Ichikawa, Arthur Molinari, Jun Ichinose, Chen-Tai Liu
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Abstract
A high performance golf ball includes a resin inner core, a rubber outer core, and a cover. The resin inner core is made of highly neutralized polymer, and may include a blend of different highly neutralized polymers. The cover is a two layer cover, with a hard inner cover and a thermoplastic polyurethane outer cover. The ball as a whole has properties to maximize performance and aesthetic properties, such as feel and sound.
Claims22
A golf ball comprising:
- an inner core layer, the inner core layer comprising a highly neutralized polymer;
- the inner core layer having an inner core layer diameter of between about 23 mm and 27 mm;
- an outer core layer enclosing the inner core layer, wherein the outer core layer comprises polybutadiene rubber;
- the outer core layer having an outer core layer thickness of at least 4.8 mm;
- the outer core layer having an outer core layer 10/130 compression between 2.7 mm and 3.3 mm when measured with an initial load of 10 kg and a final load of 130 kg;
- the outer core layer having an outer core layer 0.5/30 compression between 1.5 mm and 1.9 mm when measured with an initial load of 0.5 kg and a final load of 30 kg.;
- the outer core layer having a compression ratio of the 0.5/30 compression to the 10/130 compression of between 0.45 and 0.55;
- a core diameter of the inner core layer diameter and the outer core layer thickness, wherein the core diameter is between 34 mm and 39 mm;
- and
- an outer cover layer enclosing the outer core layer, the outer cover layer comprising thermoplastic polyurethane.
7 more elements
A golf ball comprising:
- an inner core layer, the inner core layer comprising a highly neutralized polymer;
- the inner core layer having an inner core layer diameter of between about 23 mm and 27 mm;
- an outer core layer enclosing the inner core layer, wherein the outer core layer comprises polybutadiene rubber;
- the outer core layer having an outer core layer thickness of at least 4.8 mm;
- the outer core layer having an outer core layer 0.2/5 compression between 1.5 mm and 1.9 mm when measured with an initial load of 0.2 kg and a final load of 5 kg.;
- the outer core layer having an outer core layer 10/130 compression when measured with an initial load of 10 kg and a final load of 130 kg;
- the outer core layer having a compression ratio of the outer core layer 0.2/5 compression to the outer core layer 10/130 compression of between 0.3 and 0.4;
- a core diameter of the inner core layer diameter together with the outer core layer thickness, wherein the core diameter is between 34 mm and 39 mm;
- and
- an outer cover layer enclosing the outer core layer, the outer cover layer comprising thermoplastic polyurethane.
7 more elements
Dependencies are inferred from the claim text.