Patent ID: 6364789
Filing Date: 2002-04-02
Classification: A63B

Abstract:
A wood-type golf club head comprising:a body having a hollow interior and a face opening thereto; a striking plate having an exterior surface and an interior surface and composed of a titanium material having a Young's Modulus of approximately 1.1Ã—1011 Pascals and a thickness ranging from 0.010 inch to 0.200 inch; and an annular deflection enhancement member disposed between the body and the striking plate, the annular deflection enhancement member composed of a material having a Young's Modulus less than 0.825Ã—1011 Pascals and selected from the group consisting of copper, aluminum, brass and magnesium, the annular deflection enhancement member isolating the striking plate from the body; wherein the golf club head has a coefficient of restitution greater than 0.83.