Patent ID: 6960141

Claim:
A wood-type golf club head, comprising: a sole portion having a sole center line; a crown portion; a toe portion; a heel portion; a face portion; and a back portion, wherein said sole portion includes a first portion contacting with ground in address position and a second portion being raised in a direction from the first portion toward said toe portion, said second portion is in a shape of a curved surface defined by a first curved line passing through a central portion of the second portion and extending in a direction from a boundary portion between said first and second portions toward said toe portion, and a second curved line extending in a direction from said face portion toward said back portion, an angle of said second portion with respect to said first portion is adjusted such that an angle formed by a first plane contacting with said first portion in address position with a prescribed lie angle and a second plane contacting with said second portion at a vertex of said first curved line becomes at least 30 degrees and at most 60 degrees; and wherein a gradient of said sole portion varies gently on a heel portion side relative to said sole center line, said boundary portion between said first and second portions is positioned on a toe portion side relative to said sole center line, and a gradient of said sole portion varies steeply in said boundary portion.