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US 2004/0171437 A1Published application
Multi-layered core golf ball
AssigneeAcushnet Company
InventorsMichael J. Sullivan, Derek A. Ladd, Antonio U. DeSimas
Life of this patent
Estimating the term…
Abstract
The present invention is directed towards a multi-layered core golf ball that comprises a center, a cover and at least two core layers formed around the center to create an inner ball, wherein the outermost core layer is relatively stiff and hard relative to the center. At least the center or/and one core layer is comprised of an ionomer resin having a fully neutralized acid moiety.
Claims30
A golf ball comprising:
- a multi-layer core having:
- a center comprised of a fully neutralized ionomer and having a Shore C surface hardness of less than about 85 and a compression of less than 90,
- at least one rigid outer core layer having a flex modulus greater than 40,000 psi and a Shore C hardness of greater than 80;
- an intermediate core layer interposed between the center and the rigid outer core layer having a flex modulus less than 20,000 psi and a Shore C hardness less than 60;
- and
- a cover having a Shore D hardness of less than 65.
3 more elements
A golf ball comprising:
- a multi-layer core having:
- a center having a Shore C surface hardness of less than about 85 and a compression of less than 90,
- at least one outer core layer having a Shore C hardness of greater than 80, and a specific gravity of greater than 1.25 g/cc;
- and
- a cover having a Shore D hardness of less than 65,
- wherein the center and at least one outer core layer is comprised of an ionomer resin having a fully neutralized acid moiety.
3 more elements
A golf ball comprising:
- a multi-layer core having:
- a center comprised of an ionomer resin with a fully neutralized acid moiety and having a Shore C surface hardness of less than about 85 and a compression of less than 90,
- a diameter from 1.58 inches to 1.66 inches,
- at least one outer core layer having a Shore C hardness of greater than 80, and a specific gravity of greater than 1.25 g/cc;
- and
- a cover having a Shore D hardness of less than 65.
3 more elements
A golf ball comprising:
- a multi-layer core having:
- a center having a Shore C surface hardness of less than about 85 and a compression of less than 90,
- at least one outer core layer having a Shore C hardness of greater than 80, and a specific gravity greater than 1.25 g/cc,
- a second outer core layer comprising an ionomer resin with a fully neutralized acid moiety;
- and
- at least one cover layer;
- the at least one cover layer having a Shore D hardness of less than 65:
- and,
- the at least one cover layer is selected from a cast or reaction-injection moldable thermosetting material.
6 more elements
Dependencies are inferred from the claim text.