Compliant polymer face golf club head
AssigneeCallaway Golf Company
InventorsJohn B. Kosmatka, David L. Felker, Pijush K. Dewanjee
Life of this patent
Estimating the term…
Abstract
A golf club head having a face section with a polymer surface can provide a more efficient impact between a golf ball and the golf club head. By utilizing a polymer surface with desired material properties of stress, strain and damping levels, the face section will incur higher strain and strain rate levels than the golf ball. These lower internal stresses within the golf ball yield a more efficient impact with a golf club head.
Claims20
A golf club head for impacting a golf ball, the golf club head comprising:
- a front wall having a polymer material located thereon, the polymer material having material storage compression and loss compression moduli (E′, E″) lower than a golf ball material storage compression and loss compression moduli (E′, E″) at both low and high impact speeds, and the polymer material having storage shear and loss shear moduli (G′,G″) that is lower than a golf ball material storage shear and loss shear moduli at both low and high impact speeds.
A wood-type golf club head for impacting a golf ball, the golf club head comprising:
- a face section, a top section, a rear section, a toe section and a heel section, the face section being covered by a polymer material;
- wherein the golf club head has an impact efficiency at 90 mph in the heel, center and toe sections greater than 1.46.
A golf club head for impacting a golf ball, the golf club head comprising:
- a face section, a top section, a rear section, a toe section and a heel section, the face section comprising a backing structure, a polymer material and an insert;
- wherein the polymer material has material storage compression and loss compression moduli (E′, E″) lower than a golf ball material storage compression and loss compression moduli (E′, E″) at both low and high impact speeds, and wherein the polymer material has storage shear and loss shear moduli (G′,G″) that is lower than a golf ball material storage shear and loss shear moduli at both low and high impact speeds.
Dependencies are inferred from the claim text.