Patent ID: 7775906

Claim:
A golf club, comprising: a shaft; and a head having a hollow structure fixed to an end of the shaft so as to be set to have a predetermined lie angle and a predetermined loft angle with respect to a reference horizontal plane, wherein the head includes: a face portion which includes a ball hitting surface by which a ball is hit; a crown portion; a side portion; a sole portion; and a rib provided at a part, which is lower than a central part of the face portion, on an inner surface of the face portion to protrude toward a center of the head, said rib comprising a transverse rib portion extending along a toe-heel direction, and a plurality of longitudinal rib portions, extending along a crown-sole direction, which are confined between said transverse rib portion and the sole portion, wherein a portion of the inner surface of the face portion, located above the transverse rib, comprises a central part and a peripheral part, said peripheral part confining said central part, having a thickness less than a thickness of the central part, and contacting an upper surface of the transverse rib.