| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a golf club head in which durability and repulsion performance can be made compatible. <P>SOLUTION: The golf club head 1 in a hollow structure has a face 2 for hitting a ball. A rolled material M composed of a metal material is used for at least a part of a crown part 4 forming a head upper surface or a sole part 5 forming a head bottom surface, and the rolled material M is disposed such that the rolled direction K is at an angleθequal to or less than 20 degrees to a head cross direction Y. <P>COPYRIGHT: (C)2007,JPO&INPIT</p> |
