Granted Patent B2

US 9,844,708 · App. 15/146,581 · Granted Dec 19, 2017

Abstract

Claims (46)

1. A golf club head, comprising:

a body defining an interior cavity, a sole portion positioned at a bottom portion of the golf club head, a crown portion positioned at a top portion, a forward portion and a rearward portion, and a face positioned at the forward portion of the body, the face having a varying thickness of no greater than 5 mm;

wherein the body has a volume greater than 250 cm 3 ;

wherein the face has a static loft angle;

wherein the golf club head has a center of gravity that is 5-20 mm below the geometric center of the face of the golf club head as measured along a z-axis of the golf club head having an origin at the geometric center;

wherein a projection of the center of gravity is located on the face and at an elevation below the geometric center of the face;

wherein the golf club head has a Delta 1 value of less than or equal to 25 mm;

wherein the golf club head has a moment of inertia about a golf club head center-of-gravity x-axis, I xx , of 150-500 kg-mm 2 ; and

wherein, at a normal address position, the sole portion is inclined at a sole angle of 5-40 degrees relative to a ground plane, such that a lowest point on the sole portion is at or near a rearmost point on the sole portion, and the sole portion slopes upward from the lowest point to a frontmost point on the sole portion.

2. The golf club head of claim 1 , wherein the Delta 1 value is at least 10 mm and the moment of inertia about the golf club head center-of-gravity x-axis, Ixx, is at least 200 kg-mm 2 .

3. The golf club head of claim 2 , wherein the moment of inertia about the golf club head center-of-gravity x-axis, I xx , is no more than 250 kg-mm 2 .

4. The golf club head of claim 1 , wherein the volume is less than 460 cm 3 and a head weight is less than 210 grams.

5. The golf club head of claim 1 , wherein a first portion of the body located at least partially above the geometric center of the face is formed of a non-metallic material having a non-metallic material density and a first portion thickness, and a second portion of the body located at least partially below the geometric center of the face is formed of a metallic material having a metallic material density that is at least twice the non-metallic material density.

6. The golf club head of claim 5 , wherein at least a portion of the sole portion is formed of the metallic material having a sole thickness, and at least a portion of the sole thickness is at least twice the first portion thickness.

7. The golf club head of claim 1 , wherein the sole portion is inclined at a sole angle of about 7 degrees to about 30 degrees relative to a ground plane.

8. The golf club head of claim 1 , wherein the sole portion is inclined at a sole angle of about 10 degrees to about 25 degrees relative to a ground plane.

9. The golf club head of claim 1 , wherein the sole portion is inclined at a sole angle of about 15 degrees to about 22 degrees relative to a ground plane.

10. The golf club head of claim 1 , wherein the center of gravity is at least 7 mm below the geometric center of the face of the golf club head as measured along a z-axis of the golf club head having an origin at the geometric center.

11. A golf club head, comprising:

a club head body having an external surface with a heel portion, a toe portion, a crown, a sole, and a ball striking face having a thickness no greater than 5.0 mm;

wherein the wherein the body has a volume greater than 250 cm 3 and the ball striking face has a static loft angle;

wherein the ball striking face of the club head body has a geometric center;

wherein the golf club head has a center of gravity that is 5-20 mm below the geometric center of the face of the golf club head as measured along a z-axis of the golf club head having an origin at the geometric center;

wherein the golf club head has a Delta 1 value of 10-25 mm;

wherein the golf club head has a moment of inertia about a golf club head center-of-gravity x-axis, I xx , of 150-500 kg-mm 2 ;

wherein a first portion of the body located at least partially above the geometric center of the face is formed of a non-metallic material having a non-metallic material density and a first portion thickness;

wherein a second portion of the body located at least partially below the geometric center of the face is formed of a metallic material having a metallic material density that is at least twice the non-metallic material density; and

wherein, at a normal address position, the sole portion is inclined at a sole angle of 5-40 degrees relative to a ground plane, such that a lowest point on the sole portion is at or near a rearmost point on the sole portion, and the sole portion slopes upward from the lowest point to a frontmost point on the sole portion.

12. The golf club head of claim 11 , wherein the moment of inertia about the golf club head center-of-gravity x-axis, I xx , is no more than 250 kg-mm 2 .

13. The golf club head of claim 11 , wherein at least a portion of the sole portion is formed of the metallic material and has a sole thickness, and at least a portion of the sole thickness is at least twice the first portion thickness.

14. The golf club head of claim 11 , wherein at least a portion of the face is formed of non-metallic composite material.

15. The golf club head of claim 11 , wherein the volume is less than 460 cm 3 and a head weight is less than 210 grams.

16. A golf club, comprising:

a shaft having a grip at one end and a golf club head at the other end;

the golf club head having a body defining an interior cavity, a sole portion positioned at a bottom portion of the golf club head, a crown portion positioned at a top portion, a forward portion and a rearward portion, and a face positioned at the forward portion of the body, the face having a thickness of no greater than 5 mm;

wherein the body has a volume greater than 250 cm 3 ;

wherein the face has a static loft angle;

wherein the golf club head has a center of gravity that is 5-20 mm below the geometric center of the face of the golf club head as measured along a z-axis of the golf club head having an origin at the geometric center;

wherein the golf club head has a Delta 1 value of less than or equal to 25 mm; and

wherein the golf club head has a moment of inertia about a golf club head center-of-gravity x-axis, I xx , of 150-250 kg-mm 2 ;

wherein the golf club head has a roll radius; and

wherein, at a normal address position, the sole portion is inclined at a sole angle of 5-40 degrees relative to a ground plane, such that a lowest point on the sole portion is at or near a rearmost point on the sole portion, and the sole portion slopes upward from the lowest point to a frontmost point on the sole portion.

17. The golf club of claim 16 , wherein a first portion of the body located at least partially above the geometric center of the face is formed of a non-metallic material having a non-metallic material density and a first portion thickness, and a second portion of the body located at least partially below the geometric center of the face is formed of a metallic material having a metallic material density that is at least twice the non-metallic material density.

18. The golf club of claim 17 , wherein at least a portion of the sole portion is formed of the metallic material having a sole thickness, and at least a portion of the sole thickness is at least twice the first portion thickness.

19. The golf club of claim 17 , wherein the Delta 1 value is at least 10 mm and the moment of inertia about the golf club head center-of-gravity x-axis, Ixx, is at least 200 kg-mm 2 .

20. The golf club of claim 19 , wherein the volume is less than 460 cm 3 , the face thickness varies, and a head weight is less than 210 grams.

Assignments (12)