Examples of golf club heads and methods to manufacture golf club heads are generally described herein. In one example, a body portion of a golf club head may include a cavity having an opening and an interior structure defined by a wall portion and a base portion. A hosel portion may include an insert portion and a neck portion extending therefrom. The hosel portion may be attached to the body portion by an interference fit between the neck portion and the opening of the cavity. The insert portion may be received inside the cavity and may be spaced apart from the interior structure of the cavity. A space between the insert portion and the interior structure of the cavity may be partially or entirely filled with an adhesive to hold the hosel portion in place. Other examples may be described and claimed.

A method of joining dissimilar metal, golf club components, and particularly golf club bodies, hosels, and faces, using a projection resistance welding process is disclosed herein. The method may include the step of applying an interlayer material before the projection resistance weld process occurs.

Disclosed herein is a casting cluster for casting a body of a golf club head made of titanium or a titanium alloy. The casting cluster comprises a receptor and a plurality of runners coupled to the receptor and configured to receive molten metal from the receptor. The casting cluster also includes at least forty main gates. At least two of the main gates are coupled to each of the runners and each main gate is configured to receive molten metal from a corresponding one of the plurality of runners. The casting cluster further comprises at least forty molds. Each mold of the at least forty molds is configured to receive molten metal from a corresponding one of the main gates and to cast a body of an iron-type golf club head.

A golf club head including a striking face, a periphery portion surrounding and extending rearwards from the striking face, a damping element including a front surface and a rear surface, the rear surface of the damping element opposite the front surface of the damping element, wherein the striking face comprises a first portion having a substantially constant thickness, wherein the front surface of the damping element comprises a geometric center, wherein the golf club head includes additional damping structures and materials to achieve desired acoustic characteristics.

Embodiments of golf coupling mechanisms for joining golf club heads and shafts are described herein. The golf coupling mechanism allows for adjustment of a club head loft angle, a club head lie angle, and a golf club shaft length while utilizing one club head and one shaft. In a fully extended configuration, the golf coupling mechanism includes a shaft sleeve, a removable spacer, and a removable extender, wherein a fastening assembly secures the golf coupling mechanism to the golf club head. In a contracted configuration, the golf coupling mechanism includes the shaft sleeve. The golf coupling mechanism further includes a shaft cap to soften the interaction between the shaft and the golf coupling mechanism. The golf coupling mechanism further comprises one or more arcuate coupler sets to frictionally lock the shaft relative to the golf club head.

A golf club head includes a head main body, and a toe-side component. The head main body includes a striking face, a hosel portion defining a shaft center line, and a mounting portion for mounting the toe-side component on a toe side with respect to the shaft center line. The toe-side component is fixed to the mounting portion removably. When the toe-side component is removed from the mounting portion of the head main body, a head projected area in a front view of the golf club head becomes smaller.

Examples of golf clubs and methods to manufacture golf clubs are generally described herein. In one example, a golf club may include a golf club head having a body portion and a center of gravity. A center portion of the body portion may extend from a front portion of the body portion to the rear portion of the body portion. A recess portion may be defined by the center portion. A hosel portion may extend upward from the recess portion. The hosel portion may be positioned at the center of gravity of the body portion. A shaft may be coupled to the hosel portion and extend from the hosel portion. The shaft may have a center axis that passes through the center of gravity of the golf club head. Other examples of golf club heads and methods to manufacture the same may be described and claimed.

It is an object of the present invention to provide a golf club head being lightweight and having a high strength. A head 2 includes a face 4, a sole 8, and a crown 6. The face 4 includes a face surface fs and a face back surface fr. A plurality of projections (A) are provided on the face back surface fr. The projections (A) are point-like in a planar view. An optional first direction and a second direction orthogonal to the first direction are defined in the planar view. Preferably, arrangement regularity of the projections (A) in the second direction is higher than arrangement regularity of the projections (A) in the first direction. Preferably, the first direction is a longitudinal direction; and the second direction is a lateral direction.

A golf club head including a face element having a face surface, a rear surface, and a reinforcement device with a reinforcement element that extends out from the rear surface of the face element toward a rear end and away from a front end of a golf club head. The reinforcement element includes a looped rib having an outer perimeter surface and an inner perimeter surface. The face surface is nearer to the rear surface proximal to the face center than proximal to the face perimeter. The outer perimeter surface of the reinforcement element is filleted with the rear surface.

A head for a ball striking device includes a bracing member connected to an upper sole surface located on the sole of the body opposite the bottom sole surface. The bracing member includes a first end connected to a first point on the upper sole surface, a second end connected to a second point on the upper sole surface spaced from the first point, and a bridge portion extending between the first and second ends. The bridge portion extends upward from the upper sole surface and is spaced from the upper sole surface. The bridge portion may be formed by one or more trusses, and may define a generally triangular shape in one embodiment. The first and second ends may be connected to the upper sole surface using a variety of techniques, e.g., welding or other integral joining technique, integral forming, adhesive or other bonding material, or other technique.