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Metal wood club with improved hitting face

  • US 7,169,059 B2
  • Filed: 04/22/2005
  • Issued: 01/30/2007
  • Est. Priority Date: 04/18/2000
  • Status: Expired due to Term
First Claim
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1. A golf club head comprising a hitting face wherein the hitting face comprises an elliptical inner zone having a first flexural stiffness and a first major axis, and at least a concentric intermediate zone having a second flexural stiffness, wherein the first flexural stiffness is higher than the second flexural stiffness wherein the first major axis of the elliptical inner zone forms a first angle from about 10°

  • to about 60°

    with a shaft axis of the club head, wherein a center of gravity of the golf club head is located about ±

    0.050 inch on an X-axis and about −

    0.050 inch to about −

    0.150 inch on a Z-axis and about 2.0 inch on a Y-axis with respect to a geometric center of the hitting face, wherein the X-axis is defined as a horizontal axis tangent to a geometric center of the hitting face with the positive direction toward the heel of the club head, the Y-axis is a horizontal axis orthogonal to the X-axis with the positive direction toward the rear of the club head and the Z-axis is orthogonal to both the X- and Y-axes with the positive direction toward the crown of the club head, and wherein the three axes intersect at the geometric center of the hitting face.

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