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US 8,915,799 B2Granted
Variable moment of inertia golf ball
AssigneeAcushnet Company
InventorsEdmund A. Hebert, Derek A. Ladd, Nicholas M. Nardacci, Jeffrey L. Dalton
Life of this patent
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Abstract
A golf ball having a core that includes an aqueous solution contained by a boundary layer with a solid center suspended in the solution to modify the moment of inertia of the golf ball. The aqueous solution can be thixotropic, or rheopectic, or dilatant, or pseudoplastic in nature and the center formulated to simulate the specific gravity of the solution.
Claims22
A golf ball comprising:
- a core and a cover, the core comprising:
- a solid center suspended in an aqueous solution;
- and
- a boundary layer containing the aqueous solution,
- wherein a shift occurs in the moment of inertia of the ball when struck by a golf club, and wherein the aqueous solution is non-Newtonian and wherein the aqueous solution is thixotropic in nature;
- and
- wherein the center is of a specific gravity that is within 0.08% of the specific gravity of the aqueous solution, thereby minimizing any settlement of the center within the aqueous solution.
4 more elements
A golf ball comprising:
- a core and a cover, the core comprising:
- a solid center suspended in an aqueous solution;
- and
- a boundary layer containing the aqueous solution,
- wherein a shift occurs in the moment of inertia of the ball when struck by a golf club, and wherein the aqueous solution is rheopectic in nature;
- and
- wherein the center is of a specific gravity that is within 0.08% of the specific gravity of the aqueous solution, thereby minimizing any settlement of the center within the aqueous solution.
4 more elements
A golf ball comprising:
- a core and a cover, the core comprising:
- a solid center suspended in an aqueous solution;
- and
- a boundary layer containing the aqueous solution,
- wherein a shift occurs in the moment of inertia of the ball when struck by a golf club, and wherein the aqueous solution is dilatant in nature;
- and
- wherein the center is of a specific gravity that is within 0.08% of the specific gravity of the aqueous solution, thereby minimizing any settlement of the center within the aqueous solution.
4 more elements
A golf ball comprising:
- a core and a cover, the core comprising:
- a solid center suspended in an aqueous solution;
- and
- a boundary layer containing the aqueous solution,
- wherein a shift occurs in the moment of inertia of the ball when struck by a golf club, and wherein the aqueous solution is pseudoplastic in nature.
2 more elements
A golf ball comprising:
- a core and a cover, the core comprising:
- a solid center suspended in an aqueous solution;
- and
- a boundary layer containing the aqueous solution, wherein a shift occurs in the moment of inertia of the ball when struck by a golf club, and wherein the aqueous solution is selected from a non-Newtonian group of materials consisting of corn starch and water, or silica and poly(ethylene glycol), or clay, or gypsum paste, or nano-cellulose, or benzene, or carbon tetrachloride, or ethanol, or pentane.
1 more element
A golf ball having a core comprising:
- a hollow, spherical boundary layer;
- an aqueous liquid contained within the boundary layer;
- and, a solid spherical center suspended in the aqueous liquid, wherein the aqueous liquid has a first specific gravity, and the center has a second specific gravity which is within 0.05% of the first;
- and a cover of at least one layer surrounding the boundary layer,
- wherein the aqueous solution is thixotropic in nature.
2 more elements
A golf ball having a core comprising:
- a hollow, spherical boundary layer;
- an aqueous liquid contained within the boundary layer;
- and, a solid spherical center suspended in the aqueous liquid, wherein the aqueous liquid has a first specific gravity, and the center has a second specific gravity which is within 0.05% of the first;
- and a cover of at least one layer surrounding the boundary layer,
- wherein the aqueous solution is rheopectic in nature.
2 more elements
A golf ball having a core comprising:
- a hollow, spherical boundary layer;
- an aqueous liquid contained within the boundary layer;
- and, a solid spherical center suspended in the aqueous liquid, wherein the aqueous liquid has a first specific gravity, and the center has a second specific gravity which is within 0.05% of the first;
- and a cover of at least one layer surrounding the boundary layer,
- wherein the aqueous solution is dilatant in nature.
2 more elements
A golf ball having a core comprising:
- a hollow, spherical boundary layer;
- an aqueous liquid contained within the boundary layer;
- and, a solid spherical center suspended in the aqueous liquid, wherein the aqueous liquid has a first specific gravity, and the center has a second specific gravity which is within 0.05% of the first;
- and a cover of at least one layer surrounding the boundary layer,
- wherein the aqueous solution is pseudoplastic in nature.
2 more elements
Dependencies are inferred from the claim text.