| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To improve a head turn. <P>SOLUTION: The wood type golf club head internally has a hollow section and has a head volume of≥320 cm<SP>3</SP>. A heel region length A which is the length between the backmost point P of the head at the contour line projected to a horizontal plane and an end point PH of the heel in the measuring state of the head is specified to 30 to 52(%) of the head length B which is the length between the end point PH of the heel and the end point PT of the toe. The centroid distance between the projected point of the centroid obtained by projecting the centroid of the head perpendicularly to the vertical plane and the axial central line is specified to 25 to 35 mm. <P>COPYRIGHT: (C)2003,JPO</p> |
