Grooves of golf club heads and methods to manufacture grooves of golf club heads

Abstract

A golf club head including a club face defined by a toe end, a heel end, a top rail and a sole. The golf club head including a plurality of grooves disposed on the club face between the top rail and the sole. Each groove extends between the toe end and the heel end. Depths of the grooves vary in a direction extending between the top rail and the sole and in a direction extending between the heel end and the toe end. Widths of each of the plurality of grooves vary in a direction extending between the heel end and the toe end.

What is claimed is: 
     
       1. A putter type golf club head comprising:
 a putter type club face defined by a toe end, a heel end, a top rail and a sole; and 
 a plurality of grooves disposed on the putter-type club face between the top rail and the sole, each of the plurality of grooves extending between the heel end and the toe end, and including a top of each of the plurality of grooves, and a bottom of each of the plurality of grooves; 
 wherein a width is measured from the top of each of the plurality of grooves to the bottom of each of the plurality of grooves; 
 wherein the width of each of the plurality of grooves varies in a direction extending between the toe end and the heel end; 
 wherein the putter type club face is generally planar and extends in a generally vertical orientation at an address position; and 
 wherein a top rail portion and a sole portion vertically separate the putter type club face and span horizontally from the toe end to the heel end; 
 wherein each of the plurality of grooves further comprise a first vertical wall and a second vertical wall defining a length of each of the plurality of grooves.; and 
 wherein the width of each of the plurality of grooves is greatest only at a center portion. 
 
     
     
       2. The putter type golf club head of  claim 1 , each of the plurality of grooves further comprise a first vertical wall and a second vertical wall defining a length of each of the plurality of grooves. 
     
     
       3. The putter type golf club head of claim  2   1 , wherein the lengths of each of the plurality of grooves increase in a direction from the top rail to a center of the putter-type club face. 
     
     
       4. The putter type golf club head of claim  2   1 , wherein the lengths of each of the plurality of grooves increases in a direction from the sole to a center of the putter-type club face. 
     
     
       5. The putter type golf club head of  claim 1 , wherein each of the plurality of grooves further comprise a bottom surface defining a depth of each of the plurality of grooves. 
     
     
       6. The putter type golf club head of  claim 5 , wherein the depth of each of the plurality of grooves varies in a direction from the top rail to the sole. 
     
     
       7. The putter type golf club head of  claim 1 , wherein the width of each of the plurality of grooves increases in a direction extending between the toe end and a center portion. 
     
     
       8. The putter type golf club head of  claim 1 , wherein the width of each of the plurality of grooves increases in a direction extending between the heel end and a center portion. 
     
     
       9. A putter type golf club head comprising:
 a putter type club face defined by a toe end, a heel end, a top rail and a sole; and 
 a plurality of grooves disposed on the putter-type club face between the top rail and the sole, each of the plurality of grooves extending between the heel end and the toe end, and including a top of each of the plurality of grooves and a bottom of each of the plurality of grooves; 
 wherein a width is measured from the top of each of the plurality of grooves to the bottom of each of the plurality of grooves; 
 wherein the width of each of the plurality of grooves varies in a direction extending between the toe end and the heel end; 
 wherein the width of each of the plurality of grooves varies in a direction extending from the top rail to the sole; 
 wherein the putter type club face is generally planar and extends in a generally vertical orientation at an address position; and 
 wherein a top rail portion and a sole portion vertically separate the putter type club face and span horizontally from the toe end to the heel end; 
 wherein the width of each of the plurality of grooves comprises a first width and a second width such that the first width is greatest only at a center portion and the second width is less than the first width. 
 
     
     
       10. The putter type golf club head of  claim 9 , wherein the width of each of the plurality of grooves can increase in a direction from the top rail to a center of the putter-type club face. 
     
     
       11. The putter type golf club head of  claim 9 , wherein the width of each of the plurality of grooves can increase in a direction from the sole to a center of the putter-type club face. 
     
     
       12. The putter type golf club head of  claim 9 , wherein the width of each of the plurality of grooves ranges between 0.035 inches to 0.037 inches. 
     
     
       13. The putter type golf club head of  claim 9 , wherein each of the plurality of grooves further comprises a bottom surface defining a depth of each of the plurality of grooves. 
     
     
       14. The putter type golf club head of  claim 13 , wherein the depth of each of the plurality of grooves at a center of the putter-type club face is greater than the depth at the heel end and at the toe end. 
     
     
       15. The putter type golf club head of claim  9   13 , wherein the depth of each of the plurality of grooves ranges between 0.003 inches to 0.017 inches. 
     
     
       16. The putter type golf club head of claim  9   13 , wherein a portion of the depth of each of the plurality of grooves ranges between 0.020 inches and 0.022 inches. 
     
     
       17. A putter type golf club head comprising:
 a putter type club face defined by a toe end, a heel end, a top rail and a sole; and   a plurality of grooves disposed on the putter-type club face between the top rail and the sole, each of the plurality of grooves extending between the heel end and the toe end, and including a top of each of the plurality of grooves, and a bottom of each of the plurality of grooves;   wherein a width is measured from the top of each of the plurality of grooves to the bottom of each of the plurality of grooves;   wherein the width of each of the plurality of grooves varies in a direction extending between the toe end and the heel end; and   wherein a depth of a portion of the plurality of grooves is about 0.003 inch.