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US 6,309,314 B1Granted
Golf ball with very thick cover
AssigneeSpalding Sports Worldwide, Inc.
InventorsMichael J. Sullivan, Mark L. Binette
Life of this patent
Estimating the term…
Abstract
Disclosed herein is a golf ball having a solid core with a coefficient of restitution of at least 0.650 and a cover with a thickness of at least 3.6 mm (0.142 inches) and a Shore D hardness of at least 60. The combination of a soft core with a thick, hard cover results in a ball having better distance than conventional golf balls having a comparable coefficient of restitution.
Claims39
A golf ball comprising:
- a core having a coefficient of restitution of at least 0.650,
- and a cover, said cover comprising an inner cover layer and an outer cover lager wherein said inner cover layer and said outer cover layer have a combined thickness of at least 3.6 mm (0.142 inches) and each of the inner cover layer and outer cover layers has a Shore D hardness of at least 60.
A golf ball according to claim 26 wherein the cis-1,4-polybutadiene has a weight average molecular weight of from about 100,000 to about 500,000.
Dependencies are inferred from the claim text.