| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a hollow golf club head capable of achieving the enhancement of productivity and low cost while having a housing portion for an adjusting material. <P>SOLUTION: A head 2 includes an outer shell portion 4 forming an external surface of the head and a hollow portion 16 of the head, an inside extended portion 18 extended from the outer shell portion 4 to an inner part of the head, the housing portion s1 formed by the outer shell portion 4 and the inside extended portion 18, and the adjusting material w1 disposed in the housing portion s1. The outer shell portion 4 is formed by bonding a plurality of outer shell forming members 26 and 28 formed integrally respectively. The outer shell forming member 26 has the inside extended portion 18, and the outer shell forming member 28 has the outer shell portion 4 to be part of the housing portion s1. One of the outer shell forming members may have the whole housing portion s1 and may be formed by casting a metallic material. <P>COPYRIGHT: (C)2010,JPO&INPIT</p> |
