| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a golf club formed of a head, shaft and grip, reducing the weight of the head to decrease the carry of a hit ball, solving the problem of ground encroach due to development of a golf course, providing a leisure sport having a new concept to which the golf tournament system is applied, and spreading golf for ordinary people. <P>SOLUTION: This golf club includes: the head 10, the shaft 20 and the grip 30, wherein the head 10 is provided with a plurality of ventilation means 40, the ventilation means is formed of a through hole penetrating from a face 11 to a crown 12 or a sole 13 of the head 10, and the through hole is formed linearly to have the same diameter at the front and rear end parts, and an annular insert tube 41 is integrated with the inner peripheral surface of the through hole. Thus, the head 10 is provided with the plurality of ventilation means 40, whereby the weight of the head 10 can be reduced to decrease the carry of a hit ball. <P>COPYRIGHT: (C)2008,JPO&INPIT</p> |
