Embodiments of golf club heads, golf clubs, and methods to manufacture golf club heads and golf clubs are generally described herein. In one example, a golf club head includes a body portion with an interior cavity and a face portion attached to the body portion to enclose the interior cavity. The golf club head also includes a filler material in the interior cavity and attached to the back surface of the face portion. The golf club head also includes an internal mass portion in the interior cavity spaced apart from the body portion and attached to the filler material. The filler material may be located between the face portion and the internal mass portion. The internal mass portion may be movable in the interior cavity relative to the body portion and the face portion. Other examples and embodiments may be described and claimed.

A golf club head includes a golf club head main body having a toe, a heel opposite the toe, a sole, and a top portion opposite the sole. The golf club head further includes a striking face having a face center. The striking face includes a central region including the face center, a first average thickness, and a variable thickness. An upper region above the central region has a second average thickness and a toe region toe-ward of the central region has a third average thickness. An intermediate region at least partially surrounds the central region and is disposed between the central region and each of the upper region and the toe region. The intermediate region has a fourth average thickness that is greater than the first average thickness, the second average thickness, and the third average thickness.

A golf club head having a multi-layered striking face is disclosed herein. More specifically, the golf club head in accordance with the present invention has an external frontal face layer, an internal rear face layer, and an intermediary sandwiched face layer juxtaposed between the external frontal face layer and the internal rear face layer. The intermediary sandwiched face layer may generally be made out of a high flexural modulus polymeric material.

A composite material golf club head is provided having a body made from a first metal and a face insert press fitted to a portion of the body and made from a second metal The metals are chosen so that the first metal is heavier than the second metal. The second metal is disposed towards the front and top of the body, and is preferably hard-anodized. In addition, an interlocking structure, for example rectangular or dove tail shaped channels, is provided in the body so that the face insert becomes embedded in the interlocking structure to anchor the face insert to the body. Portions of the golf club head, such as the face insert or sole plate, are anodized to protect against corrosion. The anodized coating is colored to improve aesthetic characteristics or infused with a polymer to increase or reduce friction. Disclosed herein is a golf club head having a body portion and a face insert. The front of the body portion further comprises a cutout sized and dimensioned to receive the face insert. The body portion is preferably made from a high-strength metal such as stainless steel, titanium or titanium alloy. The face insert is preferably comprised of a metal having a lower density than that of the body portion. The face insert comprises an aluminum metal matrix composite (MMC) containing an amount of scandium and zirconium. The golf club head may also include a top line insert made of a lightweight material and at least one heavy weight member disposed to the back of the club head.

Embodiments of grooves of golf club heads and methods to manufacture grooves of golf club heads are generally described herein. The golf club heads include a club face defined by a toe end, a heel end, a top rail and a sole. The golf club heads further include a plurality of grooves disposed on the club face between the top rail and the sole. Each groove extends between a heel end and a toe end. Depths of the grooves vary in a direction extending between the top rail and the sole and in a direction extending between the heel end and the toe end. Widths of the grooves vary in a direction extending between the heel end and the toe end.

A golf club head according to the disclosure is a cavity-back iron type golf club head that includes a face portion, a cavity portion provided behind the face portion, and a protrusion provided on a lower part of a rear face of the face portion. The protrusion includes a first recess extending from an upper surface of the protrusion toward a sole, a second recess positioned closer to a toe than the first recess is and extending from the upper surface of the protrusion toward the sole, and a thick portion provided between the first and second recesses in a toe-heel direction. The first and second recesses each has a substantially trapezoidal shape in a cross-sectional view taken along a plane that is parallel to a front face of the face portion and passes through a deepest part of each of the first and second recesses.

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 having a front portion, a rear portion, a toe portion, a heel portion, a top portion, and a bottom portion. The golf club head may include a sealed cavity located behind a face portion. A polymer insert and a filler material may be contained within the sealed cavity. Other examples and embodiments may be described and claimed.

A method for manufacturing a golf club head including a golf club head body, a striking face, and an inner wall supporting the striking face. A ledge extends from a body into the interior of the golf club head body, and the inner wall is disposed within a gap between the striking face and the ledge. A rear surface of the inner wall is supported by a portion of the golf club head body, and a rear surface of the striking face is in contact with a portion of the inner wall. The inner wall may be inserted into the golf club head through an opening defined in the toe portion of the golf club head or the rear portion of the golf club head.

A carbon-fiber composite golf club head comprises a carbon-fiber composite body, at least one carbon-fiber composite component and at least one weight component. The carbon-fiber composite body comprises a hollow body portion, one-piece formed by stacking carbon fiber prepreg materials, and a striking face portion disposed at a front end of the body portion. The at least one carbon-fiber composite component is mounted to at least one opening of one or both of a crown and a sole of the body portion. The at least one weight component is mounted at a rear end of the carbon-fiber composite body. By combining the carbon-fiber composite body, one-piece formed by carbon fiber composite material and comprising the body portion and the striking face portion, with the at least one carbon-fiber composite component, a weight of a main part of a club head is significantly reduced to increase a weight of counterweight.

A golf club head including a crown, a sole, a hosel, a face and a flexure. The flexure provides compliance during an impact between the golf club head and a golf ball, and is tuned to vibrate, immediately after impact, at a predetermined frequency.