Patent ID: 7294064
Filing Date: 2007-11-13
Classification: A63B

Abstract:
1. A golf club having a hollow golf club head, said golf club comprising: a metallic face portion disposed at a front of said hollow golf club head and having a hitting surface for hitting a golf ball; and a body portion constituting a remaining part thereof, said body portion comprising: wherein said golf club further comprises: an elastically deformable portion which is formed in said metallic sole portion in the vicinity of the end portion of said metallic face portion and has a structure that can be deformed elastically in response to said hitting, wherein the plate thickness of said metallic sole portion is thinner than the plate thickness of said metallic face portion; and a high-rigidity portion which is disposed in said metallic sole portion on the side of said back of said elastically deformable portion for increasing the rigidity of said disposed portion and for restoring elastic deformation with repulsion force close to explosiveness, wherein said elastically deformable portion is disposed in an area where the lower portion of said metallic face portion and said metallic sole are joined, and Young's modulus of material which makes said high rigidity portion is lower than Young's modulus of other material which comprises said metallic sole portion.