| 20080242441 | Golf club head and method for making it - A golf club head includes a hitting face and a changeable zone formed on a surface of the hitting face and having a physical feature different from that of the hitting face. Thus, all part or partial of the changeable zone of the hitting face has a hardness different from that of the hitting face, so that when the changeable zone is harder than the hitting face, the golf club head provides a greater hitting force on the golf ball due to the greater hardness of the changeable zone to increase the travel distance of the golf ball, and when the changeable zone is softer than the hitting face, the travel direction of the golf ball is controlled by the golf club head to facilitate a user controlling the travel direction the golf ball. | 10-02-2008 |
