Patent ID: 6607451
Filing Date: 2003-08-19
Classification: A63B,C08G

Abstract:
A golf club head for impacting a golf ball, the golf club head comprising:a front wall composed of a titanium alloy material and having a polymer material located thereon, the polymer material having material storage compression and loss compression moduli (Eâ€², Eâ€³) lower than a golf ball material storage compression and loss compression moduli (Eâ€², Eâ€³) at both low and high impact speeds, and the polymer material having storage shear and loss shear moduli (Gâ€², Gâ€³) that is lower than a golf ball material storage shear and loss shear moduli at both low and high impact speeds; wherein the polymer material has a thickness ranging from 0.001 inch to 0.5 inch; wherein the polymer material has a storage compression modulus of less than 6000 lb/in2, at 70Â° F., when impacting the golf ball to produce a strain rate of less than 0.1 in/in/sec; wherein the polymer material has a storage shear modulus of less than 2000 lb/in2, at 70Â° F., when impacting the golf ball to produce a strain rate of less than 0.1 in/in/sec; wherein the golf club head has an impact efficiency at 90 mph in the heel, center and toe sections greater than 1.46.