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US 6,500,076 B1Granted
Wound golf balls with high specific gravity centers
AssigneeAcushnet Company
InventorsWilliam E. Morgan, Douglas E. Jones
Life of this patent
Estimating the term…
Abstract
The present invention is directed towards an improved golf ball that includes a high-specific gravity central sphere encapsulated in a soft and resilient shell layer. The soft-resilient shell may be formed of polybutadiene rubber. This shell is subsequently wound with thread a wound core, which is then covered. The sphere can be formed of a solid metal or molded of high-specific gravity powder retained in a binding material.
Claims41
A wound golfball comprising;
- a) a sphere having a specific gravity of at least about 6.0;
- b) at least one molded shell being formed around the sphere of polybutadiene material to form a center;
- c) a wound layer disposed about the center to form a wound core, wherein the wound layer is formed of at least one spun elastic thread;
- and
- d) a cover surrounding the wound core.
2 more elements
A wound golf ball comprising:
- a) a sphere having a specific gravity above about 6.0;
- b) a first shell having a first shore D hardness formed around the sphere and a second shell having a second shore D hardness disposed on the first shell to form a center having a diameter equal to or greater than about 1.25 inches, wherein the first shell is a molded layer and the second shell is a wound layer, and wherein the first shell, and wherein the hardness of the first and second shells differ by at lcast 5 shore D;
- c) a wound layer disposed about the center to form a wound core;
- and
- d) a cover surrounding the wound core.
2 more elements
A wound golf ball comprising,
- a) a sphere having a specific gravity of about 6.0;
- b) at least one molded shell by formed around the sphere to form a center, said center having a diameter equal to or greater than about 1.25 inches;
- c) a wound layer disposed about the center to form a wound core;
- and
- d) a cover surrounding the wound core,
- wherein the at least one molded shell is formed of a polybutadiene material selected from the group consisting of:
- polybutadiene with a cis 1,4 content of above about 90% or polybutadiene with a trans-isomer content of about 20%.
4 more elements
A wound golf ball comprising:
- a) a solid sphere formed of a metal material;
- b) at least one molded shell being formed around the sphere to form a center, said molded shell being formed of a rubber material, wherein the center has a diameter greater than about 1.25 inches;
- c) at least one wound layer disposed about the center to form a wound core, said wound layer having at least one thread comprising polyurea;
- and
- d) a cover surrounding the wound core.
2 more elements
A wound golf ball comprising:
- a) a solid sphere formed of a metal material;
- b) at least one molded shell being formed around the sphere to form a center, said molded shell being formed of a rubber material, wherein the center has a diameter greater than about 125 inches;
- c) at least one wound layer disposed about the center to form a wound core, and
- d) a cover surrounding the wound core,
- wherein the outer hardness of the wound core is greater than about 55 shore D.
2 more elements
Dependencies are inferred from the claim text.