| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a golf club head, a golf club, and a golf club set with a high hitting angle and with a reduced quantity of spinning, and excellent in the stability of the hitting direction. <P>SOLUTION: The golf club head has a face surface for hitting a golf ball, which is formed at a prescribed loft angle. When the golf club is disposed on a horizontal surface in such a way that the face surface forms the prescribed loft angle, the parameter A expressed by F<SB>GH</SB>-M<SB>IG</SB>×0.00169 is smaller than 14.45 when the height of the center of gravity from the point where the vertical line perpendicular to the face surface passing the center of gravity of the golf club head crosses the face surface to the horizontal face is F<SB>GH</SB>(mm) and the size of the moment of inertia around the rotation axis with the vertical straight line which passes the center of gravity of the golf club head and orthogonally crosses the horizontal surface as the rotation axis is M<SB>IG</SB>(g cm2). <P>COPYRIGHT: (C)2006,JPO&NCIPI</p> |
