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US 8,784,236 B2Granted
Golf balls having dual cores made of polybutadiene rubber / ionomer blends
AssigneeAcushnet Company
InventorsMichael J. Sullivan, Derek A. Ladd
Life of this patent
Estimating the term…
Abstract
A multi-piece golf ball comprising at least one component made of a polybutadiene rubber/ionomer resin blend is provided. The ball preferably contains a dual-core comprising an inner core and surrounding outer core layer. Preferably, the polybutadiene rubber/ionomer resin blend is used to form the outer core layer. The center hardness of the inner core is preferably greater than the outer surface hardness of the outer cover layer. The resulting ball has high resiliency and good impact durability.
Claims25
A multi-piece golf ball, comprising:
- a dual-core comprising an inner core and outer core layer, the inner core having an outer surface and geometric center and the outer core layer having an outer surface and inner surface;
- the inner core being formed from a first rubber composition comprising polybutadiene rubber and ionomer resin, wherein the center of the inner core and surface of the outer core layer each has a hardness, and the center hardness of the inner core is greater than the surface hardness of the outer core layer;
- and
- a cover disposed about the outer core layer.
1 more element
A multi-piece golf ball, comprising:
- a multi-layered core comprising an inner core, intermediate core layer, and outer core layer, the core having an overall diameter of about 1.40 to about 1.62 inches, and the inner core being formed from a first rubber composition comprising polybutadiene rubber and ionomer resin and having a center hardness of 70 Shore C or greater,
- an intermediate core layer having a surface hardness of less than 80 Shore C;
- and
- an outer core layer having a surface hardness of 70 Shore C or greater, wherein the center hardness of the inner core is greater than the surface hardness of the outer core layer;
- and
- a cover disposed about the outer core layer.
3 more elements
Dependencies are inferred from the claim text.