Patent ID: 7607992

Claim:
A hollow golf club head comprising: a main body which is a hollow shell structure made of a fiber-reinforced plastic, wherein the main body comprises a face portion; a crown portion; a sole portion; a side portion between the crown portion and sole portion which extends from a toe-side edge to a heel-side edge of the club face through the back face of the club head; and a hosel portion in an integrated manner, and the front of the main body has no opening; and a face member covering a front portion of the main body and bonded thereto, wherein the face member comprises a face plate forming the entirety of the club face, and a turnback formed along the peripheral edge of the face plate excepting only the hosel portion, the face member being made of a metal material by forging or press working, and the size of the turnback measured in the back-and-forth direction of the head being at most 26 mm, whereby said front portion of the main body covered with the face member comprises a front wall with an outer surface bonded to an inner surface of the face plate, and a periphery wall with an outer surface bonded to an inner surface of the turnback, wherein the inner surface of the face plate is provided with a patterned protuberance, and the outer surface of the front wall is provided with a patterned indentation so as to fit to the inner surface of the face member, the total thickness of the face plate and the front wall is in a range of not more than 4.5 mm but not less than 2.6 mm, the thickness (tf) of the front portion of the main body is in a range of not less than 0.6 mm but not more than 2.0 mm, and the thickness (tb) of a rear portion of the hollow shell structure other than said front portion is in a range of not less than 0.8 mm, but not more than 3.5 mm.