Patent ID: 7658687

Claim:
A wood-type golf club head comprising a face portion having a hitting face for hitting a golf ball on its front side, a crown portion extending from an upper edge of said hitting face and forming an upper surface of the club head, a sole portion extending from a lower edge of said hitting face and forming a bottom surface of the club head, a side portion extending between said crown portion and said sole portion from a toe side edge of said hitting face to a heel side edge of said hitting face through a back face, and having a hollow portion inside the head, wherein when viewed from above as a plane view of the head in a standard state that the head is placed on a horizontal plane at prescribed lie and loft angles, a thick wall portion extending along a head contour line defined by said crown portion to include an extreme back end point BFP located at a farthest backward position of the head and expanding toward the hollow portion side to have an increased thickness is provided in a head periphery region including said head contour line, said thick wall portion having a length L of 50 to 90 mm measured along said head contour line and a width along the head outer surface of 6 to 16 mm in a vertical section passing through a center of gravity of the head in the standard state, and comprising a crown thick wall portion which forms a part of said crown portion and has a thickness of 1.2 to 2.0 mm, and a side thick wall portion which is continuous with said crown thick wall portion to form a part of said side portion and has a thickness of 1.2 to 3.0 mm, and a distance in a toe-heel direction between a middle point of said length L and the center of gravity of the head is from 5 to 40 mm.