Golf club groove configuration
View Patent ↗The present invention is directed to a golf club head with an improved striking surface. The grooves are machined into the strike surface with tight tolerances. The grooves have sharp edges, radiused ends, and a draft angle between about 2° and 12°. The striking face is machined such that it has a uniform texture with a roughness of more than 40 Ra. The face may be selectively textured to enhance certain shots that the golfer may perform. This may include providing a plurality of distinct sets of texturing to accommodate a plurality of different shots. The grooves may contain a plurality of portions, including a radiused or angled portion, a portion having substantially parallel walls, and a portion having a v-shape.
1. A golf club head, comprising:
a striking face with a groove formed therein, wherein said groove contains:
a first portion interacting with said face;
a second portion adjacent said first portion, said second portion being defined by walls that are substantially perpendicular to said face;
a third portion adjacent said second portion, said third portion being defined by walls that are angled relative to the walls of the second portion, wherein said third portion has a depth that is about 35% to about 55% of the overall groove depth; and
a fourth portion adjacent said third portion and extending between said angled walls of said third portion, the fourth portion having a width between said angled walls of said third portion that is at least about 10% of a maximum groove width.
2. The golf club head of claim 1 , wherein said first portion includes a radiused portion adjacent said face.
3. The golf club head of claim 1 , wherein said first portion has a transitioning width that is greatest adjacent said face.
4. The golf club head of claim 1 , wherein said walls of said second portion are angled such that they are convergent in a direction distal to said face.
5. The golf club head of claim 4 , wherein said walls of said second portion are angled relative to a plane normal to said face and parallel to a longitudinal axis of said groove at an angle less than about 20°.
6. The golf club head of claim 1 , wherein a first width of said second portion at a region distal from said face is at least about 80% of a second width of said second portion at a region proximal said face.
7. The golf club head of claim 1 , wherein said second portion has a maximum width that is about 80% to about 98% of a maximum groove width.
8. The golf club head of claim 1 , wherein said third portion angled walls each have an internal angle of about 35° to about 55°.
9. The golf club head of claim 1 , wherein said first portion has a depth that is about 20% to about 40% of the overall groove depth.
10. The golf club head of claim 1 , wherein said second portion has a depth that is about 15% to about 35% of the overall groove depth.
11. The golf club head of claim 1 , wherein said fourth portion has a width that is about 15% to about 25% of the width of a proximal end of the second portion.
12. A golf club head, comprising:
a striking face with a groove formed therein, wherein said groove contains:
a first portion interacting with said face and having a depth extending perpendicularly from the face to a distal end of the first portion;
a second portion adjacent said first portion, said second portion being defined by walls that are substantially perpendicular to said face;
a third portion adjacent said second portion, said third portion being defined by walls that are angled relative to the walls of the second portion, wherein said third portion has a depth that is about 35% to about 55% of the overall groove depth; and
a fourth portion adjacent said third portion and extending between said angled walls of said third portion, the fourth portion having a width between said angled walls of said third portion that is equal to or greater than the first depth.
13. The golf club head of claim 12 , wherein said first portion includes a radiused portion adjacent said face.
14. The golf club head of claim 12 , wherein said first portion has a transitioning width that is greatest adjacent said face.
15. The golf club head of claim 12 , wherein said walls of said second portion are angled such that they are convergent in a direction distal to said face.
16. The golf club head of claim 15 , wherein said walls of said second portion are angled relative to a plane normal to said face and parallel to a longitudinal axis of said groove at an angle less than about 20°.
17. The golf club head of claim 12 , wherein a first width of said second portion at a region distal from said face is at least about 80% of a second width of said second portion at a region proximal said face.
18. The golf club head of claim 12 , wherein said second portion has a maximum width that is about 80% to about 98% of a maximum groove width.
19. The golf club head of claim 12 , wherein said third portion angled walls each have an internal angle of about 35° to about 55°.
20. The golf club head of claim 12 , wherein said first portion has a depth that is about 20% to about 40% of the overall groove depth.
21. The golf club head of claim 12 , wherein said second portion has a depth that is about 15% to about 35% of the overall groove depth.