| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a golf club head which is improved in moment of inertia. <P>SOLUTION: When a head (1) is located on a level surface at a predetermined lie angle and loft angle, a horizontal line passing the center of gravity in the direction from the toe (2) to the heel (3) becomes an x-axis and a line passing the gravity center in the perpendicular direction becomes a y-axis, then, the head contour is maintained and at least a part where a head component and a cylinder with a major axis of the y-axis overlap is deleted. <P>COPYRIGHT: (C)2009,JPO&INPIT</p> |
