Golf club head

Abstract

A golf club head comprises a sole, a recessed sole port in the sole; and a rotatably adjustable sole piece adapted to be at least partially received within the sole port and comprising a central body having a plurality of contact surfaces adapted to contact the sole port and being offset from each other along a central axis extending through the central body of the sole piece. The sole piece can be positioned at least partially within the sole port at five or more rotational and axial positions with respect to the central axis, wherein at each rotational position, at least one of said contact surfaces of the central body contacts the sole port to set the axial position of the sole piece. The sole port and/or the sole piece can be generally pentagonal in shape.

1 . (canceled) 
     
     
         2 . A golf club head, comprising:
 a body, comprising a face, a crown, a sole, a skirt region, a hosel, and a body interior surface defining an interior cavity;   a passageway that extends from the hosel through the club head and opens at the sole, wherein the passageway is located on a heel end of the body and the passageway is configured to provide passage for an attachment screw;   an adjustable shaft connection system for coupling a shaft to the hosel including a shaft sleeve that is secured by the attachment screw to the hosel, the shaft sleeve is configured to support the shaft at various positions relative to the club head to vary a shaft loft angle and shaft lie angle; and   at least one repositionable weight configured to be secured to the body via a fastening bolt, the fastening bolt comprising an enlarged head portion and a threaded shaft extending from the head portion and defining a fastening bolt shaft axis, and the at least one repositionable weight is repositionable to at least two or more positions;   wherein:
 a first position of the at least two or more positions is located on a heel-ward portion of the body that is located heel-ward of a geometric center of the face; 
 a second position of the at least two or more positions is located on a toe-ward portion of the body that is located toe-ward of the geometric center of the face; 
 in at least one of the two or more positions the fastening bolt shaft axis intersects the crown; 
 at least one of the two or more positions is on the sole of the body and at least one of the two or more positions is rearward of the passageway; 
 in the first position the at least one repositionable weight at least partially sits within a heel-ward recessed portion of the body, wherein the heel-ward recessed portion comprises a heel-ward recessed portion interior surface that partially defines the interior cavity of the body; 
 in the second position the at least one repositionable weight at least partially sits within a toe-ward recessed portion of the body, wherein the toe-ward recessed portion comprises a toe-ward recessed portion interior surface that partially defines the interior cavity of the body; 
 repositioning the at least one repositionable weight from the first position to the second position produces a change in a head origin y-axis (CGy) coordinate that is less than 3 mm and produces a change in a head origin z-axis (CGz) coordinate that is less than 1.1 mm, and a change in a head origin x-axis (CGx) coordinate that is greater than 2 mm; 
 at least 50 percent of the crown has an areal weight less than 0.4 g/cm 2 . 
   
     
     
         3 . The golf club head according to  claim 2 , wherein a mass of the at least one repositionable weight multiplied by a maximum x-axis position adjustment range of the at least one repositionable weight (Max Δx) is at least 250 g·mm, and the mass of the at least one repositionable weight is between 9 g and 35 g. 
     
     
         4 . The golf club head according to  claim 3 , wherein the mass (M WA ) of the at least one repositionable weight multiplied by a maximum y-axis position adjustment range of the at least one repositionable weight (Max Δy) is less than 1800 g·mm. 
     
     
         5 . The golf club head according to  claim 3 , wherein the mass (M WA ) of the at least one repositionable weight multiplied by a maximum y-axis position adjustment range of the at least one repositionable weight (Max Δy) is less than 1000 g·mm, and the mass of the at least one repositionable weight is no more than 15 g. 
     
     
         6 . The golf club head according to  claim 2 , wherein at least 50 percent of the sole has an areal weight less than 0.4 g/cm 2  and at least 50 percent of the crown has a thickness less than about 0.9 mm. 
     
     
         7 . The golf club head according to  claim 6 , wherein in each of the first position and the second position the fastening bolt shaft axis intersects the crown. 
     
     
         8 . The golf club head according to  claim 7 , wherein in each of the first position and the second position the fastening bolt shaft axis does not intersect the face. 
     
     
         9 . The golf club head according to  claim 7 , wherein each of the first position and the second position are rearward of the passageway and less than 50 mm from the geometric center of the face as measured along the head origin y-axis. 
     
     
         10 . The golf club head according to  claim 3 , wherein at least 50 percent of the crown has a thickness less than about 0.9 mm, and in each of the first position and the second position the fastening bolt shaft axis intersects the crown. 
     
     
         11 . The golf club head according to  claim 10 , wherein in each of the first position and the second position the fastening bolt shaft axis does not intersect the face. 
     
     
         12 . The golf club head according to  claim 3 , wherein the at least one repositionable weight comprises a non-threaded bore for receiving the shaft of the fastening bolt and a counter-bore in communication with the non-threaded bore for receiving the enlarged head portion of the fastening bolt. 
     
     
         13 . The golf club head according to  claim 12 , wherein:
 a mass of the at least one repositionable weight multiplied by a maximum x-axis position adjustment range of the at least one repositionable weight (Max Δx) is at least 250 g·mm, and the mass of the at least one repositionable weight is between 9 g and 35 g;   the mass (M WA ) of the at least one repositionable weight multiplied by a maximum y-axis position adjustment range of the at least one repositionable weight (Max Δy) is less than 1000 g·mm, and the mass of the at least one repositionable weight is no more than 15 g; and   at least 50 percent of the crown has a thickness less than about 0.9 mm, and in each of the first position and the second position the fastening bolt shaft axis intersects the crown.   
     
     
         14 . The golf club head according to  claim 2 , further comprising a weight port located in a rear portion of the golf club head. 
     
     
         15 . The golf club head according to  claim 2 , wherein at least a portion of the face comprises a composite face plate. 
     
     
         16 . The golf club head according to  claim 15 , wherein the body comprises a front opening and the composite face plate is attached to an insert support structure located at the front opening; wherein the insert support structure at least partially surrounds the composite face plate and supports a rear surface of the composite face plate. 
     
     
         17 . The golf club head according to  claim 2 , wherein at least a portion of the face has a variable thickness with a maximum face plate thickness greater than 3.0 mm and a minimum face plate thickness less than 3.0 mm. 
     
     
         18 . The golf club head according to  claim 13 , wherein at least a portion of the face has a variable thickness with a maximum face plate thickness greater than 3.0 mm and a minimum face plate thickness less than 3.0 mm. 
     
     
         19 . The golf club head according to  claim 3 , further comprising a plurality of ribs protruding from the body interior surface and fixed to the toe-ward recessed portion interior surface. 
     
     
         20 . A golf club head, comprising:
 a body, comprising a face, a crown, a sole, a skirt region, a hosel, and a body interior surface defining an interior cavity;   a passageway that extends from the hosel through the club head and opens at the sole, wherein the passageway is located on a heel end of the body and the passageway is configured to provide passage for an attachment screw;   an adjustable shaft connection system for coupling a shaft to the hosel including a shaft sleeve that is secured by the attachment screw to the hosel, the shaft sleeve is configured to support the shaft at various positions relative to the club head to vary a shaft loft angle and shaft lie angle; and   at least one repositionable weight configured to be secured to the body via a fastening bolt, the fastening bolt comprising an enlarged head portion and a threaded shaft extending from the head portion and defining a fastening bolt shaft axis, and the at least one repositionable weight is repositionable to at least two or more positions;   wherein:
 a first position of the at least two or more positions is located on a heel-ward portion of the body that is located heel-ward of a geometric center of the face; 
 a second position of the at least two or more positions is located on a toe-ward portion of the body that is located toe-ward of the geometric center of the face; 
 in at least one of the two or more positions the fastening bolt shaft axis intersects the crown; 
 at least one of the two or more positions is on the sole of the body and at least one of the two or more positions is rearward of the passageway; 
 in each of the first position and the second position the at least one repositionable weight at least partially sits within a recessed portion of the body; 
 repositioning the at least one repositionable weight from the first position to the second position produces a change in a head origin y-axis (CGy) coordinate that is less than 3 mm and produces a change in a head origin z-axis (CGz) coordinate that is less than 1.1 mm, and a change in a head origin x-axis (CGx) coordinate that is greater than 2 mm; 
 the at least one repositionable weight comprises a non-threaded bore for receiving the shaft of the fastening bolt and a counter-bore in communication with the non-threaded bore for receiving the enlarged head portion of the fastening bolt; 
 at least 50 percent of the crown has an areal weight less than 0.4 g/cm 2 . 
   
     
     
         21 . The golf club head according to  claim 20 , further comprising a plurality of ribs protruding from the body interior surface and fixed to an interior surface of the recessed portion of the body. 
     
     
         22 . The golf club head according to  claim 20 , wherein the body comprises a front opening and a composite face plate is attached to an insert support structure located at the front opening; wherein the insert support structure at least partially surrounds the composite face plate and supports a rear surface of the composite face plate. 
     
     
         23 . The golf club head according to  claim 20 , wherein at least a portion of the face has a variable thickness with a maximum face plate thickness greater than 3.0 mm and a minimum face plate thickness less than 3.0 mm. 
     
     
         24 . The golf club head according to  claim 20 , further comprising a weight port located in a rear portion of the golf club head. 
     
     
         25 . A golf club head, comprising:
 a body, comprising a face, a crown, a sole, a skirt region, a hosel, and a body interior surface defining an interior cavity;   a passageway that extends from the hosel through the club head and opens at the sole, wherein the passageway is located on a heel end of the body and the passageway is configured to provide passage for an attachment screw;   an adjustable shaft connection system for coupling a shaft to the hosel including a shaft sleeve that is secured by the attachment screw to the hosel, the shaft sleeve is configured to support the shaft at various positions relative to the club head to vary a shaft loft angle and shaft lie angle; and   at least one repositionable weight configured to be secured to the body via a fastening bolt, the fastening bolt comprising an enlarged head portion and a threaded shaft extending from the head portion and defining a fastening bolt shaft axis;   wherein:
 the at least one repositionable weight is located on a heel-ward portion of the body that is located heel-ward of a geometric center of the face, less than 40 mm from the geometric center of the face as measured along a head origin y-axis, rearward of the passageway, adjacent the passageway, and at least partially sits within a recessed portion of the body; 
 the fastening bolt shaft axis intersects the crown and does not intersect the face; 
 the at least one repositionable weight comprises a non-threaded bore for receiving the shaft of the fastening bolt and a counter-bore in communication with the non-threaded bore for receiving the enlarged head portion of the fastening bolt; 
 at least 50 percent of the crown has a thickness less than about 0.9 mm and an areal weight less than 0.4 g/cm 2 ; 
 at least 50 percent of the sole has an areal weight less than 0.4 g/cm 2 ; 
 at least a portion of the face has a variable thickness with a maximum face plate thickness greater than 3.0 mm and a minimum face plate thickness less than the maximum face plate thickness. 
   
     
     
         26 . The golf club head according to  claim 25 , further comprising a weight port located in a rear portion of the golf club head.