US Patent 7867105 Forged iron head and golf club having the same

A forged iron head for a golf club has a face for hitting a golf ball, a top and a sole extending to upper and lower parts of a rear side of the face, a heel and a toe disposed between the sole and the top, a cavity disposed in the rear side of the face and surrounded by the sole, the top, the heel and the toe and a hosel coupled with a shaft extending from a first side of the face and having a handle part to be gripped by a player. The head comprises a hollow part with an opening formed from the sole toward a first side of the cavity, and a sole cover which closes the opening. The formation of the hollow part lowers the centroid of the iron head, thereby improving flight distances and direction of a golf ball.