Patent ID: 7131913

Claim:
An iron golf club provided with a head portion having a single cavity portion with a length along a first axis extending from a toe portion to a heel portion, a face portion, and a sole portion, comprising: a groove extending along said face portion is provided on a surface on said cavity portion side of said sole portion; and a thickness of a ball hitting portion in said face portion is made greater than a thickness of a top edge side portion of said face portion located between said ball hitting portion and a top edge portion and at least as thick as a thickness of a sole side portion of said face portion that is located between said ball hitting portion and said sole portion and that extends along said groove; and having only one projected wall portion offset from said face portion, wherein the one projected wall portion is trapezoidal in shape; and wherein said one projected wall portion has a length along said first axis that is less than said length of said cavity portion along said first axis and has an inner surface formed by said groove and an outer surface that is flush with a back portion of the iron golf club.