Abstract: The invention relates to an iron golf club head including a front surface, or striking surface, and a rear surface, the striking surface and the rear surface being demarcated by an upper edge, a heel, a lower edge and a toe. The rear surface has an open cavity demarcated by a recess and a peripheral edge. The recess of the head according to the invention is a convex surface that extends from the peripheral edge of the cavity.

Abstract: The invention is directed to a golf club of the iron type having an improved mass distribution. More particularly, the rear portion of the club head has a main cavity extending towards the striking face and a peripheral mass belt extending around the main cavity defining heel, toe, upper and lower perimeter portions. The upper perimeter portion of the peripheral mass belt includes an elongated recess which is progressively connected to the upper edge portion of the club head along an undercut, the undercut having a height that generally increases in a direction toward the toe and a thickness with respect to the striking face that increases progressively in a direction toward the upper edge portion.

Abstract: The invention is directed to a golf club of the iron type having an improved mass distribution. More particularly, the rear portion of the club head has a main cavity extending towards the striking face and a peripheral mass belt extending around the main cavity defining heel, toe, upper and lower perimeter portions. The upper perimeter portion of the peripheral mass belt includes a secondary recess which has a volume smaller than the volume of the main cavity and a volume per unit length that increases in a direction toward the toe of the club head.