Multi-layer golf ball
AssigneeSpalding Sports Worldwide, Inc.
InventorsR. Dennis Nesbitt, Thomas J. Kennedy, III, Mark L. Binette, Michael J. Sullivan
Life of this patent
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Abstract
The present invention is directed to an improved multi-layer golf ball comprising a core, an inner cover layer and an outer cover layer. The inner cover layer is comprised of a high acid ionomer or ionomer blend which may or may not include a filler such as zinc-stearate. The outer cover layer is comprised of a soft, very low modulus ionomer or ionomer blend, or a non-ionomeric thermoplastic elastomer such as polyurethane, polyester or polyesteramide. The resulting multi-layered golf ball of the present invention provides for enhanced distance without sacrificing playability or durability when compared to known multi-layer golf balls.
Claims21
A golf ball comprising a core and a cover for covering said core;
- said core comprising (i) a first polybutadiene rubber obtained utilizing a cobalt catalyst and having a Mooney viscosity in the range of from about 70 to about 83, and (ii) a blend of polybutadiene rubbers wherein each is obtained by utilizing a lanthanide series catalyst and having a Mooney viscosity of from about 30 to about 70;
- and,
- said cover comprising an inner layer cover and an outer layer cover, said inner cover layer being formed from a relatively hard, ionomeric resin or blend of ionomeric resins having an acid content of at least 16%, and
- said outer cover being relatively softer than said inner cover.
A golf ball comprising a core and a cover for covering said core;
- said core comprising (i) a first polybutadiene rubber obtained utilizing a cobalt catalyst and having a Mooney viscosity in the range of from about 70 to about 83, and (ii) a blend of polybutadiene rubbers wherein each is obtained by utilizing a lanthanide series catalyst and having a Mooney viscosity of from about 30 to about 70;
- and,
- said cover comprising an inner layer cover and an outer layer cover, said inner cover layer being formed from a relatively hard, ionomeric resin or blend of ionomeric resins having an acid content of at least 16%, and
- said outer cover being relatively softer than said inner cover,
- wherein said inner cover layer has# Shore D hardness of at least about 70.
Dependencies are inferred from the claim text.