Patent ID: 7614962

Claim:
A set of iron-type golf clubs, comprising: a first golf club including a first golf club head having a first loft angle, a first ground contact, and a first sole camber having a first radius of curvature; a second golf club including a second golf club head having a second loft angle that is greater than the first loft angle, a second ground contact, and a second sole camber having a second radius of curvature that is greater than the first radius of curvature; and a third golf club including a third golf club head having a third loft angle that is greater than the second loft angle, a third ground contact, and a third sole camber having a third radius of curvature that is greater than the second radius of curvature, wherein the first golf club, the second golf club and the third golf club have constant horizontal spacing in the face to back direction between the ground contact and the center of gravity through the set and each golf club has an effective bounce of 1.0°-15°, wherein the measurements are based on a non-compressible planar ground surface with said golf clubs oriented with its designed loft and lie angles relative to the ground plane, and wherein said curvature is a face to back curvature.