Birch, Stewart, Kolasch & Birch, LLP
Golf club head
A golf club head having a good feel of hitting a ball, comprising a head body 1A having a face 2 for hitting a ball on a front side of the head body and having at least one recess portion 10 in an outer surface 1S thereof except the face 2, and at least one vibration absorbing member made of a viscoelastic material and disposed in the recess portion 10, the recess portion 10 including a bottom surface 10a and a sidewall surface 10b extending from the bottom surface 10a to the outer surface 1S, and the vibration absorbing member 11 being fixed to the bottom surface 10a to provide a free vibration portion 11A extending up to a position corresponding to the outer surface 1S of the head body 1A without coming into contact with the sidewall surface 10b of the recess portion 10. 
SRI Sports Limited
A A A A A A A A A
A63B A63B A63B A63B A63B A63B A63B A63B A63B
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Takashi
Nakano