Wound golf ball and method of making same
AssigneeAcushnet Company
InventorHerbert C. Boehm
Life of this patent
Estimating the term…
Abstract
A wound golf ball includes a center, at least one cover layer, and at least one wound layer disposed between the center and the cover layer. The center has a two-layer shell formed of different materials, where one layer is formed of a thermoplastic material and the other layer is formed of a thermoset material. The center is filled with a fluid having a fluid volume of at least 0.5 cubic inches. In one embodiment, the thermoplastic layer is formed of a hydrophobic material so that it has a water vapor permeation rate of less than about 250 (g·mil)/(100 in2·day).
Claims23
A wound golf ball comprising:
- a. a center including
- i. a non-wound shell having at least two layers wherein the first layer is formed of a first material and the second layer is formed of a second material, and the first material is a thermoset material and the second material is a thermoplastic material;
- and
- ii. a fluid being disposed within the shell, the fluid having a fluid volume of at least 0.5 cubic inches;
- b. a wound layer disposed about the shell to form a wound core;
- and
- c. a cover surrounding the wound core.
A wound golf ball comprising:
- a. a center including
- i. a non-wound shell having at least two layers wherein the first layer is formed of a first material and the second layer is formed of a second material, and the first material is a thermoset material and the second material has a water vapor permeation rate of less than about 250 (g·mil)/(100 in2·day);
- and
- ii. a fluid being disposed within the shell;
- b. a wound layer disposed about the shell to form a wound core;
- and
- c. a cover surrounding the wound core.
A method of making a wound golf ball comprising the steps of:
- a. forming a first layer for a shell using a thermoplastic material;
- b. injecting at least 0.5 cubic inches of fluid into the shell to form a fluid-filled envelope;
- c. molding two, second layer hemispheres for the shell using a rubber material;
- d. surrounding the fluid-filled envelope with the second layer hemispheres and curing the second layer hemispheres to form a center;
- e. surrounding the center with a wound layer to form a wound core;
- and
- f. forming a cover around the wound core.
Dependencies are inferred from the claim text.