US Patent 7798916 Golf club head

This invention provides a hollow metal golf club head including at least a face portion, sole portion, side portion, and crown portion. This golf club head includes a head main body having an opening in the face portion, and a face plate engaged and welded with the opening. The head main body comprises a protruding portion which forms a part of the face portion and protrudes upward from a central portion, in a toe-and-heel direction, of a corner portion between the face portion and the sole portion in the golf club head. The face plate comprises s a recessed portion which extends upward from the lower edge of the face plate and engages with the protruding portion.