| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a golf club head having a substantially increased sweet spot across its club face. <P>SOLUTION: A preferred construction includes an annular area 1 on a rear surface 23 having an increased thickness surrounding a central region with a balance point of the club face 20. The central region of the face 20 has a generally reduced thickness that is less than the maximum of the annular area but greater than a minimum thickness at the peripheral area. The face material may be metallic, but in another embodiment the effective bending stiffness profiles represented by this annular area may be achieved by an appropriate use of composites, for example. The methods for manufacturing a golf club head having a face 20 with the bending stiffness profiles of the present invention includes forging or machining techniques as well as laser deposition and inertia welding. <P>COPYRIGHT: (C)2009,JPO&INPIT</p> |
