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Golf club head

  • US 8,328,662 B2
  • Filed: 04/16/2010
  • Issued: 12/11/2012
  • Est. Priority Date: 05/28/2009
  • Status: Active Grant
First Claim
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1. A golf club head comprising:

  • a face line having a depth of D1 (mm); and

    a land area,wherein when a boundary between the land area and the face line is defined as a point Pa in a section line of a surface of a face;

    a point of which a depth is [D1/4] (mm) is defined as a point Pb;

    a point of which a depth is [D1/2] (mm) is defined as a point Pc;

    a point of which a depth is [(D1



    )] (mm) is defined as a point Pd;

    a point of which a depth is 0.002 (mm) is defined as a point Px;

    a radius of a circle CL1 passing through three points of the point Pa, the point Pb, and the point Pc is defined as R3 (mm);

    a straight line passing through the point Pa and the point Px is defined as a straight line Lax; and

    an angle between the land area and the straight line Lax is defined as θ

    2 (degree),the radius R3 is 0.2 (mm) or greater and 0.4 (mm) or less, andthe angle θ

    2 is 10 degrees or greater and 50 degrees or less.

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