Patent ID: 7972222

Claim:
An iron golf club head having a cavity, a face portion, a heel portion, a toe portion, a top portion, and a sole portion, the iron golf club head comprising: a groove extending between a front wall of the cavity and a rear most portion of the sole portion, the groove comprising opposing sidewalls that extend between the heel portion and the toe portion and defining a rimmed edge that surrounds the groove; and a raised portion disposed within the groove and between the opposing sidewalls, the raised portion being built into the groove as part of the club head, wherein the raised portion is sized and shaped to fit within the groove and comprises sidewall portions that extend between the opposing sidewalls of the groove, and wherein the raised portion comprises at least one portion that extends between a bottom surface of the groove and the rimmed edge of the groove, and wherein a cross section of the raised portion defines a continuous smooth wave within the groove, the wave defining at least one peak and two valleys, and the wave extending continuously between opposing edges of the groove.