Alignment system for a putter type golf club

Abstract

A putter type golf club head having an alignment system for aligning the putter to a predetermined lie angle. An alignment line is located on an upper surface of a rear flange perpendicular to the frontal ball striking face. An opening in the top ridge allows the alignment line to be seen by the golfer when the predetermined lie angle is achieved.

1 . A putter type golf club head including a club head body, heel toe, top ridge, bottom sole, frontal ball striking face, rear face, and rear flange attached to said rear face, wherein the improvement comprises: 
 an alignment line on an upper surface of said rear flange, said alignment line being perpendicular to said frontal ball striking face; 
 an opening in said top ridge for alignment with said alignment line when a predetermined lie angle is achieved.  
   
   
   
       2 . The putter type golf club head of  claim 1  wherein said rear face is undercut inwardly toward said frontal ball striking face; and said opening is a notch in said top ridge; said notch being located at a rear edge of said top ridge.  
   
   
       3 . The putter type golf club head of  claim 2  wherein said opening is arcuate in shape.  
   
   
       4 . The putter type golf club head of  claim 1  wherein said rear face is flush with the rear edge of said top ridge and further includes an alignment slot on said rear face extending vertically from said alignment line; said opening is formed by the intersection of said alignment slot and said top ridge.  
   
   
       5 . The putter type golf club head of  claim 4  wherein said opening is arcuate in shape and is located at a rear edge of said top ridge.