Two-part hosel connection system for golf clubs

Abstract

Disclosed herein is a golf club including a shaft, a club head and several devices for releasably connecting the shaft to the club head.

1 . A golf club comprising a shaft, a club head and a connection system releasably connecting the shaft to the club head, said connection system comprises a two-part hosel, wherein a first hosel part is connected to the shaft and a second hosel part is connected to the club head wherein an anti-rotation device is disposed between the first and second hosel parts, and wherein said anti-rotation device is located above the club head. 
   
   
       2 . The golf club of  claim 1 , wherein the anti-rotation device comprises a first serrated surface disposed on the first hosel part and a second corresponding serrated surface disposed on the second hosel part and wherein the first and second serrated surfaces mate to minimize relative rotation between the shaft and the club head. 
   
   
       3 . The golf club of  claim 1 , wherein the connection system further comprises a hollow sole insert fixedly attached to a bore in the club head and a fastener adapted to pass through the sole insert and into a threaded distal end of the shaft to affix the club head to the shaft. 
   
   
       4 . The golf club of  claim 3 , wherein the distal end of the shaft is spaced apart from the sole insert. 
   
   
       5 . The golf club of  claim 3 , wherein the sole insert is made integral to the bore. 
   
   
       6 . The golf club of  claim 3 , wherein the bore comprises a ledge that the sole insert abuts when the fastener is affixed to the distal end of the shaft. 
   
   
       7 . The golf club of  claim 3 , wherein the threaded distal end of the shaft comprises a hollow distal end adapted to receive a threaded shaft insert. 
   
   
       8 . The golf club of  claim 3 , wherein the fastener comprises a threaded screw. 
   
   
       9 . The golf club of  claim 2 , wherein each serrated surface comprises a plurality of teeth. 
   
   
       10 . A golf club comprising a shaft, a club head and a connection system, said connection system compriseing a hollow sole insert affixed in a hosel bore proximate a sole of the club head, wherein a first key is disposed on an internally threaded distal end of the shaft and a second corresponding key is disposed on the sole insert and wherein as a fastener is inserted through the sole insert and into the threaded distal end of the shaft to connect the shaft to the club head the first and second keys mate with each other to minimize relative rotation between the shaft and the club head. 
   
   
       11 . The golf club of  claim 10 , wherein the first and second keys comprise corresponding surfaces. 
   
   
       12 . The golf club of  claim 10 , wherein the sole insert and hosel bore are integral to each other. 
   
   
       13 . A golf club comprising a shaft, a club head and a connection system, said connection system comprises a spring loaded bayonet mount, wherein the spring has a spring constant, k, from about 5 pounds-force to about 100 pounds-force and wherein the spring loaded bayonet mount is located above the club head. 
   
   
       14 . The golf club of  claim 13 , wherein the bayonet mount comprises at least one post disposed on the shaft and at least one corresponding channel disposed on a hosel of the club head and the bayonet mount further comprises a spring disposed within the hosel. 
   
   
       15 . The golf club of  claim 13 , wherein the spring constant is from about 20 pounds-force to about 75 pounds-force. 
   
   
       16 . The golf club of  claim 15 , wherein the spring constant is about 33 pounds-force. 
   
   
       17 . The golf club of  claim 14 , wherein said channel comprises a reduced diameter section sized and dimensioned to releasably retain said post. 
   
   
       18 . The golf club of  claim 17 , wherein said reduced diameter section comprises a triangular section. 
   
   
       19 . The golf club of  claim 17 , wherein said reduced diameter section comprises a waist section. 
   
   
       20 . A golf club comprising a shaft, a club head and a means for releasably connecting the shaft to the club head.