| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a golf club having superior performance and quality by improving the strength of a portion provided with a rib and reducing the weight of a club head. <P>SOLUTION: This golf club 8 is so formed that an outer shell is formed of a face part 12, a crown part 16, a sole part 18, side parts 20 and 22 in a toe side and a heel side and a rear-side back part 24, the outer shell, in its inside, has a hollow-structure metal club head 10 formed with an internal space N, a rib 32 is projected from the inner face 17a of the outer shell to the side of the internal space N, and the outer protrusion part 36 outward protruding along the rib 32, is formed in the outer face 17b of the outer shell. <P>COPYRIGHT: (C)2010,JPO&INPIT</p> |
