Controllable head for golf putter

Abstract

This invention relates to a controllable head to be used on the golf putter, in which the club shaft is divided into two sections, the upper shaft and the lower shaft, and linked together by a fork joint which provides a relative tendency of stability in sway of the upper shaft against the lower shaft so as to render the ball an accurate rolling course to enter the hole on the green.

1 - 2 . (Canceled).  
   
   
       3 . A controllable head for a golf putter, comprising: 
 a first shaft section;    a second shaft section;    a golf club head attached to an end of said second shaft section; and    a fork joint disposed between said first shaft section and said second shaft section, and linking said first shaft section to said second shaft section, said fork joint including: 
 a fixed head attachable to one of said first and second shaft sections, and including a forked portion, and a first lock hole and a first bolt hole formed in the forked portion;  
 a movable head attachable to another one of said first and second shaft sections, and having a linking tongue that is engaged with the forked portion of said fixed head, and a second lock hole and a second bolt hole formed in the linking tongue, the second lock hole being in alignment with the first lock hole, and the second bolt hole being in alignment with the first bolt hole;  
 a removable fastening member engagable with the first and second bolt holes, to rigidly fix the movable head to the fixed head; and  
 a lock pin positioned to extend through the first and second lock holes, and forming a pivot about which the movable head is freely pivotal relative to the fixed head only when the fastening member is removed from the first and second bolt holes;  
 wherein when the fastening member is engaged with the first and second bolt holes, the fastening member fixes the movable head to the fixed head to prevent pivoting thereof.  
   
   
   
       4 . The controllable head recited in  claim 3 , wherein said first shaft section and said second shaft section each have a respective cavity formed therein, and wherein the fixed head and the moveable head each have a respective post that enters into the respective cavities, to join said fork joint to said first and second shaft sections.  
   
   
       5 . The controllable head as recited in claim  1 , wherein when said movable head pivots, said movable head moves in a direction essentially parallel to a face of said golf club head.