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US 10,092,796 B2Granted
Medium gradient dual core golf ball
AssigneeAcushnet Company
InventorsMichael J. Sullivan, Brian Comeau, Dennis Britton
Life of this patent
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Abstract
A golf ball includes an inner core layer having a first surface hardness and a geometric center hardness. The center hardness is less than the first surface hardness to define a first positive hardness gradient of about 1 to 12 Shore C. An outer core layer has a second surface hardness. A cover layer is formed over the outer core layer. The second outer surface hardness is greater than the geometric center hardness to define a second positive hardness gradient of about 12 to 22 Shore C.
Claims18
A golf ball comprising:
- an inner core layer having a first surface hardness and a geometric center hardness, the center hardness being less than the first surface hardness to define a first positive hardness gradient of about 1 to 12 Shore C;
- an outer core layer having a second surface hardness greater than the geometric center hardness to define a second positive hardness gradient of about 12 to 22 Shore C;
- and
- a cover layer disposed about the outer core layer;
- wherein the first hardness gradient has a first slope, S1, and the second hardness gradient has a second slope, S2, and a ratio of the second slope, S2, to the first slope, S1, is about 1.0 or greater.
2 more elements
Dependencies are inferred from the claim text.