Patent ID: 8033932

Claim:
A golf club head having a volume of greater than 400 cm 3 and not greater than 500 cm 3 and 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 a hosel part, 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 at least one first rib, wherein the at least one first rib 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, wherein the at least one first rib has a highest height at a position in contact with the inner surface of at least a part of the crown part, the height of the at least one first rib gradually decreasing from the highest height along a direction started from the highest position to a face of the head, along the direction to a face of the head, and wherein the at least one first rib 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.