Patent ID: 7371189

Claim:
An iron golf-club head having (1) a loft angle of 45° or more, (2) a leading edge and (3) a face bounded by a face contour and having at least one face line inclined at an angle of 2° or less relative to a horizontal direction as determined in a reference position, where the head is placed on a horizontal plane at a predetermined lie angle and the predetermined loft angle, wherein in a projection of the face on a projection plane that includes the sweet spot on the face and is normal to a line that (1) extends through the center of gravity of the head and (2) is normal to the face, a maximum transversal, defined as the longest straight line cutting across the face contour and extending through (1) an intersection of the leading edge and a straight line drawn from a heel-side end point of the at least one face line in a predetermined direction along the projection plane and (2) an upper toe-side of the face contour, forms an angle in a range of 39° to 50° with an intersection defined by the projection plane and the horizontal plane, and wherein the face contour has a radius of curvature in the range of 10 mm to 22 mm in the vicinity of a toe-side intersection of the face contour and the maximum transversal.