Embodiments of golf club heads and methods to manufacture golf club heads are generally described herein. In one example, a golf club head may include a body portion with an interior cavity and face portion, and weight portion and a wall portion on a bottom portion of the body portion extending into the interior cavity. A polymer material may be in the interior cavity located between and coupled to the wall portion and the weight portion. The wall portion may be farther from the face portion than to the weight portion. The weight portion may be closer to a front portion than to a rear portion of the body portion. A distance between the weight portion and the face portion may be greater than a distance between the weight portion and the wall portion. Other examples and embodiments may be described and claimed.

Embodiments of golf club heads and methods to manufacture golf club heads are generally described herein. In one example, a golf club head includes a body portion having a front portion, a rear portion, a toe portion, a heel portion, a bottom portion, an interior cavity, and a top portion having an opening to the interior cavity. The golf club head also includes a crown portion attached to the top portion and covering the opening in the top portion and enclosing the interior cavity. The crown portion may include an inner composite layer defining an inner surface of the crown portion, an outer composite layer defining an outer surface of the crown portion, and an inner crown portion layer attached to the inner surface. The inner crown portion layer is configured to dampen vibration of the golf club head. Other examples and embodiments may be described and claimed.

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, a hosel portion, and a shaft. The hosel portion may be positioned rearward of a center of gravity of the body portion. The shaft portion may be coupled to the hosel portion and may have a first shaft portion and a second shaft portion. The first shaft portion may extend from the hosel portion and tilt toward the face portion with no lateral tilt toward a toe portion or a heel portion of the body portion. The second shaft portion may extend from the first shaft portion toward the heel portion and toward a face portion of the body portion. Other examples of golf club heads and methods to manufacture the same may be described and claimed.

A co-forged iron type golf club is disclosed. More specifically, the present invention discloses an iron type golf club head from a pre-form billet that already contains two or more materials before the actual forging process resulting in a multi-material golf club head that doesn't require any post manufacturing operations such as machining, welding, swaging, gluing, and the like. The resultant golf club head may be capable of achieving center of gravity locations previously unachievable without utilizing this co-forging technique. The resultant golf club head may be used to create a set of golf club heads with center of gravity locations that are more advantageous throughout a set of golf clubs.

An iron-type golf club incorporating an aperture extending through the shell on the sole. The location and size of the aperture selectively increase deflection of the face.

A co-forged iron type golf club is disclosed. More specifically, the present invention discloses an iron type golf club head from a pre-form billet that already contains two or more materials before the actual forging process resulting in a multi-material golf club head that doesn't require any post manufacturing operations such as machining, welding, swaging, gluing, and the like. The resultant golf club head may be capable of achieving center of gravity locations previously unachievable without utilizing this co-forging technique. The resultant golf club head may be used to create a set of golf club heads with center of gravity locations that are more advantageous throughout a set of golf clubs.

A golf club head includes a metallic head body having an opening, and an FRP member fixed to the head body so as to close the opening. The FRP member is a fiber-reinforced plastic including fibers and thermoplastic resin. The head body includes a support portion around the opening. The support portion has a first surface for supporting the FRP member. The first surface is provided with at least one narrow groove having a groove width of 20 to 80 μm and a groove depth of 100 to 400 μm, and a part of the thermoplastic resin of the FRP member is solidified inside the at least one narrow groove.

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 front portion. A face portion may be coupled to the front portion. The face portion may include a central strike portion and a perimeter. A plurality of projections may extend from the face portion to provide a ball striking surface for impacting a golf ball. The plurality of projections may be aligned in one or more directions across the face portion and may increase in size in one or more directions from the central strike portion to the perimeter of the face portion. Other examples and examples may be described and claimed.

Golf club heads include at least one weight port situated to retain weights and positioned above an approximate club face geometric center with the club in a standard address position. One, two, or more weight ports can be located above the club face center in a club crown or other portion of a club body. Club head vertical center of gravity can be selected to compensate dynamic loft associated with locating the club head center of gravity well behind the club face. Three-dimensional adjustment of club head center of gravity is possible.

A golf club head with a crown comprising an inner crown portion and an outer crown portion. The inner crown portion may be made of a low density or low elastic modulus material. The outer portion of the crown defines an opening to the cavity, a riser extending into the cavity, and a ledge extending from the edge of the riser. The ledge may define a first channel and a second channel that extend around the ledge. The first channel is filled with adhesive to secure the inner portion of the crown to the ledge. The inner portion of the crown is attached to the ledge such that the opening is covered by the inner portion of the crown. The golf club head may also have a sole comprising an inner sole portion and an outer sole portion.