Golf ball with liquid center
AssigneeAcushnet Company
InventorsLawrence E. Stanton, Walter L. Reid, Jr., Stephen K. Scolamiero, Jeffrey L. Dalton, Murali Rajagopalan
Life of this patent
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Abstract
The present invention is directed toward the novel use of thermoplastic materials to form center core shells for use in liquid filled golf balls. Golf balls of the present invention employ liquid filled centers formed from thermoplastic shells, preferably made of a polyether-ester, the shells having a tensile modulus of about 3 ksi to about 10 ksi, preferably a hardness of about 20 to about 80 shore D, preferably a flexural modulus of about 5.5 ksi to about 8.5 ksi, preferably a wound layer, and preferably a specific gravity of greater than 1.5. The shell has a thickness of about 0.005 inches to about 0.5 inches.
Claims19
A golf ball comprising:
- a) a liquid filled center comprising a center core shell having an outer diameter of less than 1.3 inches, having a thickness between 0.005 inches and 0.5 inches, and having a flexural modulus between 3 ksi and 10 ksi;
- b) an Outer layer of windings surrounding the liquid filled center;
- and
- c) a cover surrounding the outer layer.
A golf ball comprising:
- a) a liquid filled center comprising a center core shell comprising a polyether-ester bock copolymer, the center core shell having an outer diameter of less than 1.3 inches having a thickness between 0.005 inches and 0.5 inches, and having a tensile modulus between 3 ksi and 10 ksi;
- b) an outer layer surrounding the liquid filled center;
- and
- c) a cover surrounding the outer layer.
A golf ball comprising:
- a) a liquid filled center comprising a center core shell made of a thermoplastic material having an outer diameter of less than 1.3 inches, and having a thickness between 0.005 inches and 0.5 inches;
- b) an outer layer of windings surrounding the liquid filled center;
- and
- c) a cover surrounding the outer layer
- wherein the thermoplastic material comprises a rubber modified polyolefin, a polyether amide block copolymer, a polyether-ester block copolymer or a metallocene.
Dependencies are inferred from the claim text.