| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a golf club expanding a repulsion area of a face part. <P>SOLUTION: The same surfaces of respective portions of a crown part 2, a sole part 3 and the like of the body part are formed of metal plates with different rigidities or strengths and combinedly joined with the face part 4 having a driving surface. For example, the side of the face part 4 of the crown part 2 or the sole part 3 is formed of titanium alloy with high rigidity and strength while the other part side is formed of pure titanium. The metal plates with different rigidities and the strengths are disposed in a single position so as to expand the repulsion area of the face part and elongate the carry by the hitting. <P>COPYRIGHT: (C)2006,JPO&NCIPI</p> |
