Abstract: A golf club head, including a weight system including an adjustable weight including an aperture, the aperture dimensioned to receive a fastener, a bore formed in the sole, a fastener configured to pass through the aperture of the adjustable weight and engage the bore, wherein rotation of the adjustable weight alters the location of the center of gravity of the body, wherein the adjustable weight comprises a first engaging arm and a second engaging arm, wherein the sole of the golf club head comprises a first engagement member and a second engagement member, the first and second engagement members adapted to engage any one of the engaging arms when the adjustable weight is in the locked position, the first and second engagement members preventing the adjustable weight from rotating relative to the body.

Abstract: A golf club head including a crown, a sole, a hosel, a face, a weight port, an internal cavity, and a stiffening member. The weight port is affixed to the sole. The stiffening member is located in the interior cavity and permanently affixed to the hosel. The stiffening member is also permanently affixed to the sole and the weight port.

Abstract: A golf club head, including a weight system including an adjustable weight including an aperture, the aperture dimensioned to receive a fastener, a bore formed in the sole, a fastener configured to pass through the aperture of the adjustable weight and engage the bore, wherein rotation of the adjustable weight alters the location of the center of gravity of the body, wherein the adjustable weight comprises a first engaging arm and a second engaging arm, wherein the sole of the golf club head comprises a first engagement member and a second engagement member, the first and second engagement members adapted to engage any one of the engaging arms when the adjustable weight is in the locked position, the first and second engagement members preventing the adjustable weight from rotating relative to the body.

Abstract: A golf club head made out of multi-material is disclosed herein. More specifically, the golf club head in accordance with the present invention has at least a portion of the body of the golf club head that is further comprised out of a base layer and a lightweight cover layer. The base layer may have a plurality of cutouts to help reduce unnecessary mass and the lightweight cover layer may be made out of an ultra-lightweight material to further reduce the unnecessary mass. In alternative embodiments of the invention, the base layer may have one or more ribs to provide structural rigidity to the base layer.

Abstract: A golf club head made out of multi-material is disclosed herein. More specifically, the golf club head in accordance with the present invention has at least a portion of the body of the golf club head that is further comprised out of a base layer and a lightweight cover layer. The base layer may have a plurality of cutouts to help reduce unnecessary mass and the lightweight cover layer may be made out of an ultra-lightweight material to further reduce the unnecessary mass. The resulting golf club head may generally have a deep CG wherein the CG-B location is about 37 mm, and a CG-C location is greater than about 30 mm.

Abstract: 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. A slot is included in a portion of the golf club head and works with the flexure to further tune performance.

Abstract: A golf club head made out of multi-material is disclosed herein. More specifically, the golf club head in accordance with the present invention has at least a portion of the body of the golf club head that is further comprised out of a base layer and a lightweight cover layer. The base layer may have a plurality of cutouts to help reduce unnecessary mass and the lightweight cover layer may be made out of an ultra-lightweight material to further reduce the unnecessary mass. The present invention achieves this without sacrificing the sound performance of the golf club head.

Abstract: A golf club head made out of multi-material is disclosed herein. More specifically, the golf club head in accordance with the present invention has at least a portion of the body of the golf club head that is further comprised out of a base layer and a lightweight cover layer. The base layer may have a plurality of cutouts to help reduce unnecessary mass and the lightweight cover layer may be made out of an ultra-lightweight material to further reduce the unnecessary mass. The resulting golf club head may generally have a deep CG wherein the CG-B location is about 37 mm, and a CG-C location is greater than about 30 mm.

Abstract: A golf club head, including a weight system including an adjustable weight including an aperture, the aperture dimensioned to receive a fastener, a bore formed in the sole, a fastener configured to pass through the aperture of the adjustable weight and engage the bore, wherein rotation of the adjustable weight alters the location of the center of gravity of the body, wherein the adjustable weight comprises a first engaging arm and a second engaging arm, wherein the sole of the golf club head comprises a first engagement member and a second engagement member, the first and second engagement members adapted to engage any one of the engaging arms when the adjustable weight is in the locked position, the first and second engagement members preventing the adjustable weight from rotating relative to the body.

Abstract: A golf club head including a crown, a sole, a hosel, a face, a weight port, an internal cavity, and a stiffening member. The weight port is affixed to the sole. The stiffening member is located in the interior cavity and permanently affixed to the hosel. The stiffening member is also permanently affixed to the sole and the weight port.

Abstract: A golf club with a multi-material face is disclosed herein. More specifically, the golf club head in accordance with the present invention has a multi-material striking face portion that can be comprised out of a metallic outer layer combined with a composite mid-section, all forming a face cup construction that can be connected to an aft body. The composite portion of the multi-material face disclosed in accordance with the present invention may generally have an inter laminar shear strength of greater than about 60 MPa, most preferably greater than about 60 MPa and less than about 145 MPa.

Abstract: A golf club head, comprising a body having a center of gravity, wherein the body comprises a coordinate system with an x-axis located horizontal to the face, a y-axis located vertical to the face, and a z-axis located through the face; and a weight system configured to adjust the location of the center of gravity of the body, wherein the weight system comprises a plurality of weight channels formed in the body, an elongate adjustable weight configured to selectively reside in each of the plurality of weight channels, wherein the elongate adjustable weight comprises an aperture at a first end of the elongate adjustable weight, and a fastener configured to reside in the aperture and engage the body, wherein the fastener is configured to affix the elongate adjustable weight to the body.

Abstract: A golf club head made out of multi-material is disclosed herein. More specifically, the golf club head in accordance with the present invention has at least a portion of the body of the golf club head that is further comprised out of a base layer and a lightweight cover layer. The base layer may have a plurality of cutouts to help reduce unnecessary mass and the lightweight cover layer may be made out of an ultra-lightweight material to further reduce the unnecessary mass.

Abstract: A golf club head including a crown, a sole, a hosel, a face, a weight port, an internal cavity, and a stiffening member. The weight port is affixed to the sole. The stiffening member is located in the interior cavity and permanently affixed to the hosel. The stiffening member is also permanently affixed to the sole and the weight port.

Abstract: A golf club head made out of multi-material is disclosed herein. More specifically, the golf club head in accordance with the present invention has at least a portion of the body of the golf club head that is further comprised out of a base layer and a lightweight cover layer. The base layer may have a plurality of cutouts to help reduce unnecessary mass and the lightweight cover layer may be made out of an ultra-lightweight material to further reduce the unnecessary mass.

Abstract: 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. A slot is included in a portion of the golf club head and works with the flexure to further tune performance.

Abstract: A golf club with a multi-material face is disclosed herein. More specifically, the golf club head in accordance with the present invention has a multi-material striking face portion that can be comprised out of a metallic outer layer combined with a composite mid-section, all forming a face cup construction that can be connected to an aft body. The composite portion of the multi-material face disclosed in accordance with the present invention may generally have an inter laminar shear strength of greater than about 60 MPa, most preferably greater than about 60 MPa and less than about 145 MPa.

Abstract: 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.

Abstract: A golf club head, comprising a body having a center of gravity, wherein the body comprises a coordinate system with an x-axis located horizontal to the face, a y-axis located vertical to the face, and a z-axis located through the face; and a weight system configured to adjust the location of the center of gravity of the body, wherein the weight system comprises a plurality of weight channels formed in the body, an elongate adjustable weight configured to selectively reside in each of the plurality of weight channels, wherein the elongate adjustable weight comprises an aperture at a first end of the elongate adjustable weight, and a fastener configured to reside in the aperture and engage the body, wherein the fastener is configured to affix the elongate adjustable weight to the body.

Abstract: A golf club incorporating an interchangeable shaft system includes a shaft, a shaft sleeve, a club head. The shaft sleeve is coupled to an end of the shaft and is received in a hosel included in the club head. The shaft sleeve is removably coupled to the club head. Hosel and shaft sleeve alignment features provide discrete orientations between the shaft and club head.