Golf club head with improved performance
View Patent ↗A golf club head with an improved sweet spot, defined as a portion of the striking face that has at least 99.7% of the maximum ballspeed is disclosed herein. More specifically, the present invention discloses a golf club head with a significantly circular sweet spot that encompasses at least about 1.5% of the total striking face. A golf club head in accordance with the present invention may generally have a improved face geometry with an elliptical factor of greater than about 0.5, a beveled transition portion around the striking face of the golf club head, a variable face thickness region with decreases thickness, or even a tilted bulge and roll radius all helping improve the performance of the golf club head.
1. A golf club head comprising:
a striking face;
a posterior body portion further comprising a crown portion and a sole portion, wherein said crown portion is coupled to an upper portion of said striking face and said sole portion is coupled to a lower portion of said striking face; and
a beveled transition portion at least partially surrounding a perimeter of said striking face, connecting said striking face with said posterior body portion,
wherein said striking face produces a sweet spot, separate and distinct from a thickened central portion, defined as the area of said frontal surface area of said striking face having at least 99.7% of maximum ballspeed achievable by said golf club head, that encompasses greater than about 1.5% of said frontal surface area of said striking face.
2. The golf club head of claim 1 , wherein said sweet spot is concentric with a geometric center of said striking face.
3. The golf club head of claim 1 , wherein no point within said sweet spot is further than about 7.0 mm away from a geometric center of said sweet spot.
4. The golf club head of claim 1 , wherein said striking face has an elliptical geometry with an elliptical factor of greater than about 0.50;
wherein said elliptical factor is defined as a length of a minor axis of said striking face divided by a length of a major axis of said striking face.
5. The golf club head of claim 4 , wherein said beveled transition portion has a radius of curvature of greater than about 25 mm.
6. The golf club head of claim 1 , wherein said beveled transition portion only partially surrounds said perimeter of said striking face.
7. The golf club head of claim 6 , wherein said beveled transition portion does not surround said sole portion of said striking face.
8. A golf club head comprising:
a substantially oval striking face;
a posterior body portion further comprising a crown portion and a sole portion, wherein said crown portion is coupled to an upper portion of said striking face and said sole portion is coupled to a lower portion of said striking face; and
a beveled transition portion at least partially surrounding a perimeter of said striking face, connecting said striking face with said posterior body portion,
wherein said beveled transition portion further comprises,
a toe beveled transition portion, and
a heel beveled transition portion;
wherein a radius of curvature of said toe beveled transition portion is different from a radius of curvature of said heel beveled transition portion.
9. The golf club head of claim 8 , wherein said toe beveled transition portion has a radius of curvature greater than about 30 mm, and wherein said heel beveled transition portion has a radius of curvature greater than about 25 mm.
10. The golf club head of claim 8 , wherein said striking face has an elliptical geometry with an elliptical factor of greater than about 0.33;
wherein said elliptical factor is defined as a length of a minor axis of said striking face divided by a length of a major axis of said striking face.
11. The golf club head of claim 8 , wherein said striking face has an elliptical geometry with an elliptical factor of greater than about 0.41;
wherein said elliptical factor is defined as a length of a minor axis of said striking face divided by a length of a major axis of said striking face.
12. The golf club head of claim 8 , wherein said striking face has an elliptical geometry with an elliptical factor of greater than about 0.50;
wherein said elliptical factor is defined as a length of a minor axis of said striking face divided by a length of a major axis of said striking face.
13. The golf club head of claim 8 , wherein said striking face has a variable thickness further comprising:
a thick central portion;
a transition portion; and
a thin perimeter portion,
wherein said thin perimeter portion has a thickness of less than about 3.0 mm.
14. The golf club head of claim 13 , wherein said thin perimeter portion has a thickness of less than about 2.9 mm.
15. The golf club head of claim 14 , wherein said thin perimeter portion has a thickness of less than about 2.8 mm.
16. The golf club head of claim 8 , wherein said striking face produces a sweet spot, defined as the area of said frontal surface area of said striking face having at least 99.7% of a maximum ballspeed achievable by said golf club head that encompasses greater than about 1.5% of said frontal surface area of said striking face.
17. The golf club head of claim 16 , wherein said sweet spot has a substantially circular shape.