Patent ID: 7828676

Claim:
A golf club head having a hollow space therein, which is made of a metal, comprising: a first member comprising at least a face part; and a second member comprising at least a part of a sole part, at least a part of a crown part, at least a part of a side part, and a plurality of ribs, wherein each of the plurality of ribs extends from the inner surface of at least a part of the sole part to the inner surface of at least a part of the crown part via the inner surface of at least a part of the side part, and each of the plurality of ribs is cast integrally with at least a part of the sole part, at least a part of the crown part, and at least a part of the side part wherein a tip end portion of each of the plurality of ribs on the head center side is thinner than a portion that is in contact with the inner surface of the sole part, the inner surface of the side part, or the inner surface of the crown part.