Patent ID: 8109842

Claim:
A hollow golf club head comprising: a face portion; a side portion; a sole portion; and a crown portion, wherein said crown portion includes a thin-walled region formed on a face side of said crown portion and a thick-walled region formed on a back side of said crown portion, said thin-walled-region begins from an upper end of said face portion, said sole portion includes a thin-walled region formed on a back side of said sole portion and a thick-walled region formed on a face side of said sole portion, a thickness of said side portion is the same as a thickness of said thin-walled region in said crown portion, said thick-walled region of said sole portion is formed from a heel-side end of said sole portion to a toe-side end of said sole portion and has a uniform thickness, and said thick-walled region in said crown portion and said thick-walled region in said sole portion do not overlap with each other when viewed in a direction perpendicular to a surface of the sole portion.