Golf club head comprising microscopic bubble material
AssigneeCallaway Golf Company
InventorsJoshua D. Westrum, Hong G. Jeon, Scott Manwaring, Kenneth E. Meacham, Brooks Roche
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Abstract
A golf club head with a face component having a variable thickness and a coating on a rear surface of the face component that provides a flat surface to which a medallion can be affixed, and methods of manufacturing such golf club heads, are disclosed herein. The coating is made from a fill material comprising a polymer and a plurality of microscopic bubbles, which preferably constitute 5-70% of the volume of the fill material. The polymer material preferably is a polyurethane having a Poisson's ratio of 0.40-0.50.
Claims20
A golf club head comprising:
- a body comprising a striking face, a sole portion, a top portion, a rear portion, and a cavity;
- and
- a fill material comprising a first material and a plurality of microscopic bubbles composed of a second material,
- wherein the second material is different from the first material,
- wherein the striking face comprises a nonplanar rear surface,
- wherein the fill material covers at least a portion of the nonplanar rear surface to create a flat plane, and
- wherein the plurality of microscopic bubbles constitutes 5% to 70% of a volume of the fill material.
A method comprising the steps of:
- providing a golf club head comprising a variable thickness face component with a striking surface and a rear surface, wherein at least a portion of the rear surface is nonplanar;
- providing a fill material comprising a polymer material and a plurality of microscopic bubbles composed of a low-density material;
- providing a medallion sized to cover at least a portion of the rear surface;
- injecting the fill material onto the rear surface to create a flat surface;
- and
- affixing the medallion to the flat surface.
Dependencies are inferred from the claim text.