Golf club head

Abstract

A golf club head includes a body defining an interior cavity. The body includes a sole positioned at a bottom portion of the golf club head, a crown positioned at a top portion, and a skirt positioned around a periphery between the sole and crown. The body has a forward portion and a rearward portion. The club head includes a face positioned at the forward portion of the body. The face defines a striking surface having an ideal impact location at a golf club head origin. Embodiments include club heads for a fairway wood that at least one of a high moment of inertia, a low center-of-gravity, a thin crown and a high coefficient of restitution. A sleeve for easily disconnecting a shaft to the club head allows for selective adjustment of the head's loft and lie angle.

1 - 20 . (canceled) 
     
     
         21 . A golf club head, comprising:
 a body defining an interior cavity, a sole portion positioned at a bottom portion of the golf club head, a crown portion positioned at a top portion of the golf club head, and a skirt portion positioned around a periphery of the golf club head between the sole and the crown, the body also having a forward portion and a rearward portion and a maximum above ground height; and   a face positioned at the forward portion of the body;   wherein:
 the body height is less than about 46 mm; and 
 the face has a loft angle greater than about 13 degrees; and 
   further wherein the golf club head:
 has a center of gravity (CG) projection of less than about 3 mm above a center of the face; 
 is formed of at least one alloy of titanium; 
 has a coefficient of restitution measured at the center of the face that is 0.80 or greater; and 
 has an above ground center-of-gravity location, Zup, less than about 19.0 mm. 
   
     
     
         22 . The golf club head of  claim 21 , wherein the CG projection is less than about 1.4 mm above the center of the face. 
     
     
         23 . The golf club head of  claim 21 , wherein the coefficient of restitution is about 0.82. 
     
     
         24 . The golf club head of  claim 21 , wherein the coefficient of restitution is 0.82 or greater. 
     
     
         25 . The golf club head of  claim 21 , wherein a volume of the golf club head is less than about 240 cm 3 . 
     
     
         26 . The golf club head of  claim 21 , further comprising a channel defined in the sole adjacent the face. 
     
     
         27 . The golf club head of  claim 21 , wherein the coefficient of restitution is 0.81 or greater. 
     
     
         28 . The golf club head of  claim 21 , wherein an average characteristic time of the golf club head is no less than 241 microseconds. 
     
     
         29 . The golf club head of  claim 21 , wherein a mass of the golf club head is between about 185 grams and about 245 grams. 
     
     
         30 . The golf club head of  claim 21 , wherein a mass of the golf club head is between about 200 grams and about 220 grams. 
     
     
         31 . The golf club head of  claim 21 , wherein the golf club head body is substantially formed from a combination of a steel alloy and a titanium alloy. 
     
     
         32 . The golf club head of  claim 21 , wherein the golf club head body is substantially formed from a combination of a titanium alloy and a graphitic composite. 
     
     
         33 . The golf club head of  claim 21 , wherein the golf club head body is substantially formed from a combination of a steel alloy, a titanium alloy, and a graphitic composite. 
     
     
         34 . The golf club head of  claim 21 , further comprising a sleeve for securing a shaft to the golf club head. 
     
     
         35 . The golf club head of  claim 21 , wherein discretionary mass is added to the golf club head on an interior side of the sole portion at a forward location. 
     
     
         36 . The golf club head of  claim 21 , wherein discretionary mass is added to the golf club head on an outside of the sole portion. 
     
     
         37 . The golf club head of  claim 36 , wherein the discretionary mass is secured by one or more welds. 
     
     
         38 . The golf club head of  claim 36 , wherein the discretionary mass is secured by a mechanical fastener. 
     
     
         39 . The golf club head of  claim 36 , wherein the discretionary mass is secured by one or more screws. 
     
     
         40 . The golf club head of  claim 36 , wherein the discretionary mass threadingly engages the sole portion. 
     
     
         41 . The golf club head of  claim 36 , wherein the discretionary mass is formed of a material having a higher density than the material used to form the body. 
     
     
         42 . The golf club head of  claim 36 , wherein the discretionary mass is formed of a material having a density of from about 8 g/cc to about 19 g/cc.