Golf clubs and golf club head structures having an indicator providing a visual indication of a location of a center of gravity of a wood-type golf club are presented. The indicator may include a central portion or hub that is generally aligned with the center of gravity of the club. The indicator may also include a plurality of legs extending outward from the hub toward a perimeter of the golf club head. In some arrangements, the indicator may be formed to distribute a portion of the weight of the club head in order to adjust or move the center of gravity of the club head, in addition to providing a visual indication of the location of the center of gravity.

The present invention is directed to a set of golf clubs comprising long irons, mid-irons and short irons. The irons have a progressive horizontal CG location. Preferably, the long and MID irons have a CG located between about 1 mm and 3 mm towards the hosel and the short iron CG is located between about 3 mm and 4 mm toward the hosel. Further the irons can have a substantially constant blade width with progressively increasing toe height and progressively decreasing scoreline width.

A set 2 includes two or more iron type golf clubs 4 having loft angles different from each other. Each club 4 includes a shaft sf, a head hd, and a grip gp. The head hd includes a top surface 10, a sole surface 12, and a face surface 14 having a face line gv. The sole surface 12 includes a leading edge E1 and a trailing edge E2. In a planar view of the sole surface 12, the trailing edge E2 is curved so as to project toward a face side. A sole width WSc at a middle position of the face line gv is increased as the loft angle is increased.

The present invention is directed to a set of golf clubs comprising long irons, mid irons and short irons. The irons have a progressive horizontal CG location. Preferably, the long and mid irons have a face stabilizing bar and back panel and the CG is located between about 1 mm and 3 mm towards the hosel and the CG in the short irons is located between about 3 mm and 4 mm toward the hosel. Further the long and mid irons irons can have a plurality of apertures in the face stabilizing bar and/or the back wall.

A set 2 includes two or more iron type golf clubs 4 having loft angles different from each other. Each club 4 includes a shaft sf, a head hd, and a grip gp. The head hd includes a top surface 10, a sole surface 12, and a face surface 14 having a face line gv. The sole surface 12 includes a leading edge E1 and a trailing edge E2. In a planar view of the sole surface 12, the trailing edge E2 is curved so as to project toward a face side. A sole width WSt at a toe reference position is decreased as the loft angle is increased. A sole width WSh at a heel reference position is decreased as the loft angle is increased.

A golf club 4 includes a head hd and a sole surface 12. The sole surface 12 includes a ridgeline RL extending from a toe side toward a heel side, a leading surface Si positioned on a face side of the ridgeline RL and inclined upward toward the face side, and a trailing surface S2 positioned on a back side of the ridgeline RL and inclined upward toward the back side. Inclination angles at respective positions of the trailing surface S2 are defined as θ2c at a central position, θ2t at a toe reference position, and θ2h at a heel reference position. Then, the head hd satisfies at least one of the following (a) and (b): (a) The inclination angle θ2t is greater than the inclination angle θ2c (b) The inclination angle θ2h is greater than the inclination angle θ2c.

A golf club head including a striking face, a periphery portion, and a support arm spaced from the rear surface of the striking face, a first damping element residing between the support arm and the rear surface of the striking face, wherein the first damping element comprises a front surface in contact with the rear surface of the striking face and a rear surface in contact with the support arm, wherein the periphery portion comprises a sole, and a second damping element located between the first damping element and the sole, a front portion of the second damping element in contact with the rear surface of the striking face, a rear surface of the second damping element in contact with the support arm.

A golf club shaft system and golf club shaft possessing unique flexural and torsional rigidity profiles, while providing significant adjustability to fine tune the shaft to a particular golf swing.

A golf club head includes a body having a heel portion, a toe portion, a sole portion, and an outer surface, a strikeface having a geometric center, a head center of gravity, and a weight member including a weight pad. The weight member is configured to be repositionable by the user to a first position or a second position. The club head having the weight member in the first position shifts the head center of gravity toward the strikeface, and the club head having the weight member in the second position shifts the head center of gravity away from the strikeface.

Golf club heads including a striking face with a variable thickness, a shell including a crown, and an internal weight pad located on a lower portion of the shell. The center of gravity depths of at least two golf club heads in a set satisfy the equation: D=a−b*LA, with 19 mm<a<22 mm and b=0.36 mm/degrees, and the at least two golf club heads have a difference in loft angle LA of at least 5 degrees. A moment of inertia about a vertical axis through the center of gravity of each of the at least two golf club heads is at least 2900 g*cm.sup.2. In one aspect, a striking face has a center region having a first thickness T1, an intermediate region having a second thickness T2, and a perimeter region having a third thickness T3, with T2<T1<T3.