Angled golf putter head having teeth

Abstract

An angled putting golf club head has a forward-angled face comprising a plurality of teeth constructed so as to impart to the ball a horizontal force with little or no vertical force at the point of impact, and to contact the ball above its center of gravity so that the ball has negligible sliding motion when first struck.

1 . A golf club head, comprising:
 a top-forward angled face, the face comprising a plurality of generally forward-facing teeth.   
     
     
         2 . The golf club head according to  claim 1 , wherein one or more of the plurality of teeth is positioned on the face to contact the ball above the center of mass of the ball. 
     
     
         3 . The golf club head according to  claim 2 , wherein the face is angled forward at an angle A of approximately the sin −1 (0.4) from a vertical. 
     
     
         4 . The golf club head according to  claim 3 , wherein the teeth comprise a top forward face surface having an angle B 1  from a horizontal plane and a bottom forward face surface having an angle B 2  from the horizontal plane, wherein B 1  and B 2  are chosen such that the net vertical force on the ball from the teeth is approximately zero when the teeth strike a ball. 
     
     
         5 . The golf club head according to  claim 4 , wherein the following solution equation is satisfied:
   cos( A )*sin(2 B 1)/sin(2( B 1 −A ))=[cos( B 2)+cos( A )/cos( B 2+ A )]*sin(2 B 2)/[4*sin( B 2+ A )].   
     
     
         6 . The golf club head according to  claim 5 , wherein 24°≦B 2 ≦40°, and wherein for each value of B 2 , B 1  is chosen based on the solution equation such that 62°≦B 1 ≦71°, and 95°≦B 1 +B 2 ≦102°. 
     
     
         7 . The golf club head according to  claim 6 , wherein B 1  is approximately 67° and B 2  is approximately 31°, and an angle between a top horizontal surface and the top forward face surface E is approximately 113°. 
     
     
         8 . The golf club head according to  claim 5 , wherein B 2 =0° and B 1 =90°. 
     
     
         9 . The golf club head according to  claim 1 , wherein a tooth of the plurality of teeth has a triangular shape according to the following specifications;
 a vertical height of the tooth d is approximately 0.125″″ high:   an upper angle C between the club face and a top forward face surface of the tooth that is approximately 46.58°;   a bottom angle D between the club face and a bottom forward face surface of the tooth that is approximately 35.42°;   a back portion of the tooth adjacent to the club face has a length a of approximately 0.1364″;   the top forward face surface has a length b of approximately 0.0798″; and   the bottom forward face surface has a length c of approximately 0.1″.   
     
     
         10 . The golf club head according to  claim 1 , wherein an overall vertical height f of the non-angled surface of the club head is approximately 1.25″. 
     
     
         11 . The golf club head according to  claim 1 , wherein the plurality of teeth is ten teeth. 
     
     
         12 . The golf club head according to  claim 1 , wherein a bottom surface of the head has a length h of approximately 0.3294″, and a top surface of the head has a length g of approximately 0.875″. 
     
     
         13 . A golf club comprising a means for imparting a forward rotation to a golf ball during a stroke comprising:
 a means for contacting the golf ball with a top forward angled face of a club head, the means comprising a plurality of protrusions on the angled face.   
     
     
         14 . The golf club according to  claim 13 , wherein one or more of the plurality of protrusions contacts the golf ball above its center of gravity and, at the point of contact, imparts a horizontal force with negligible vertical force on the golf ball. 
     
     
         15 . A method for putting, comprising:
 striking a golf ball with an angled putter face comprising a plurality of teeth; and   contacting the ball during the striking by one or more of the plurality of teeth such that a force exerted by the teeth on the ball is purely forward and horizontal.   
     
     
         16 . The method according to  claim 15 , further comprising simultaneously imparting a rotational motion on the ball in combination with a forward motion that essentially eliminates sliding friction at a start of a putting motion beginning with the striking of the golf ball.