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 with a frontal surface area of greater than about 3,600 mm 2 ;
a posterior body portion further comprising a crown portion and a sole portion, 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 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;
wherein said striking face has an elliptical geometry having a major axis less than about 120 mm and a minor axis greater than about 40 mm, and
wherein said beveled transition portion further comprises a toe beveled transition portion and a heel beveled transition portion, and a radius of curvature of said toe beveled transition portion is different from a radius of curvature of said heel beveled transition portion.
2. The golf club head of claim 1 , wherein said radius of curvature of said toe beveled transition portion is greater than about 25 mm.
3. The golf club head of claim 2 , wherein said radius of curvature of said toe beveled transition portion is greater than about 30 mm.
4. The golf club head of claim 3 , wherein said radius of curvature of said toe beveled transition portion is greater than about 35 mm.
5. The golf club head of claim 1 , wherein said radius of curvature of said heel beveled transition portion is greater than about 20 mm.
6. The golf club head of claim 5 , wherein said radius of curvature of said heel beveled transition portion is greater than about 25 mm.
7. The golf club head of claim 6 , wherein said radius of curvature of said heel beveled transition portion is greater than about 27.5 mm.
8. The golf club head of claim 1 , wherein said striking face further comprises;
a thickened portion located near a center of a rear of said striking face portion; and
a thin perimeter portion around said thickened portion;
wherein said thin perimeter portion has a thickness of less than about 3.0 mm.
9. The golf club head of claim 8 , wherein said thin perimeter portion has a thickness of less than about 2.9 mm.
10. The golf club head of claim 9 , wherein said thin perimeter portion has a thickness of less than about 2.9 mm.
11. A golf club head comprising:
a striking face with a frontal surface area of greater than about 3,600 mm 2 ;
a posterior body portion further comprising a crown portion and a sole portion, 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 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;
wherein said beveled transition portion further comprises a toe beveled transition portion and a heel beveled transition portion, and a radius of curvature of said toe beveled transition portion is different from a radius of curvature of said heel beveled transition portion, and
wherein said striking face further comprises;
a thickened portion located near a center of a rear of said striking face portion; and
a thin perimeter portion around said thickened portion;
wherein said thin perimeter portion has a thickness of less than about 3.0 mm.
12. The golf club head of claim 11 , wherein said thin perimeter portion has a thickness of less than about 2.9 mm.
13. The golf club head of claim 12 , wherein said thin perimeter portion has a thickness of less than about 2.9 mm.
14. The golf club head of claim 11 , wherein said striking face has an elliptical factor of greater than about 0.33;
said elliptical factor defined as a length of a minor axis divided by a length of a major axis.
15. The golf club head of claim 14 , wherein said striking face has an elliptical factor of greater than about 0.41.
16. The golf club head of claim 15 , wherein said striking face has an elliptical factor of greater than about 0.50.
17. The golf club head of claim 16 , wherein said major axis is less than about 120 mm and said minor axis is greater than about 40 mm.
18. The golf club head of claim 17 , wherein said major axis is less than about 110 mm and said minor axis is greater than about 45 mm.
19. The golf club head of claim 18 , wherein said major axis is less than about 100 mm and said minor axis is greater than about 50 mm.