Patent ID: 7347796
Filing Date: 2008-03-25
Classification: A63B

Abstract:
1. A golf club, comprising: a face portion disposed at a metallic hollow golf club head and having a striking surface for striking a golf ball; and a body portion constituting a remaining part thereof, the body portion comprising: a sole portion forming a lower portion of the metallic hollow golf club head; a crown portion forming an upper portion of the metallic hollow golf club head; a toe portion forming a forepart of the metallic hollow golf club head; a heel portion forming a rear part of the metallic hollow golf club head; a back portion positioned opposite the face portion and forming a back part of the metallic hollow golf club head; and a hosel portion to which a shaft is connected, wherein at least one portion of the above portions in the body portion is formed by joining a plurality of different types of metals having different rigidity or strength on the face portion; wherein the metals are formed into a plurality of metal plates, and the joining is performed by welding; wherein in the crown portion or the sole portion, the plurality of metal plates comprises a first metal plate disposed within a predetermined width from the face portion to the back portion in substantially the center between the toe portion and the heel portion, a second metal plate disposed on the toe portion side and a third metal plate disposed on the heel portion side.