Patent ID: 6478693
Filing Date: 2002-11-12
Classification: A63B

Abstract:
A golf club head with a loft angle in a range of from 5 to 30 degrees, the golf club head comprising a metal body having a hollow portion and a face portion,wherein a thick portion is formed on the back surface of the face portion, the thick portion has N steps (N&gE;2) so that a center of the face portion including the first step is the thickest and the thick portion becoms gradually thin toward the peripheral portion thereof; a distance between a centroid of a cut surface of the first step and a centroid of the face surface, and a distance between a centroid of a cut surface of the Nth step and a centroid of a cut surface of the Nâˆ’1th step are in a range of from 1 mm to 25% of a face length.