METAL WOOD CLUB

Abstract

A golf club head is provided with a body that has an address position with a zero degree bounce portion on the sole and a center sole position with a multi-relief surface of the sole having a negative bounce portion. The negative bounce portion may comprise a negative 0.5 to a negative 4.0 degree surface. In one embodiment, the multi-relief surface may comprise the negative bounce portion and a cutaway portion extending to the back of the sole, which may have a depth of about 0.05 to 0.5 inch from a regular sole surface. In another embodiment, the golf club head includes a weight system to adjust the center of gravity. In one embodiment, the weight system is a tube having a weight at one end that may be inserted into the golf club head to move the center of gravity at least forward and backward within 6 mm and up and down within 6 mm. Preferably, the tube is angled downward toward the face by at least 3 degrees.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

Preferred features of the present invention are disclosed in the accompanying drawings, wherein similar reference characters denote similar elements throughout the several views, and wherein:

FIG. 1 is a perspective view of an embodiment of a club head of the present invention;

FIG. 2 is bottom plan view of an embodiment of a club head of FIG. 1;

FIG. 3A is a front plan view of an embodiment of a club head according to FIG. 1 at impact with a golf ball;

FIG. 3B is a front plan view of an embodiment of a club head according to FIG. 1 at address;

FIG. 4A is bottom plan view of an embodiment of a club head of FIG. 1;

FIG. 4B is a cross-sectional view of the club head of FIG. 4 taken along line 3B-3B in FIG. 4;

FIG. 4C is a cross-sectional view of the club head of FIG. 4 taken along line 4C-4C in FIG. 4;

FIG. 4D is a cross-sectional view of the club head of FIG. 4 taken along line 4D-4D in FIG. 4;

FIG. 5 is a back view of the club head of FIG. 1;

FIG. 6 is a heel side view of the club head of FIG. 1;

FIG. 7A is a bottom plan view of a club head with the inventive sole of FIG. 1;

FIG. 7B is a cross sectional view of the club head of FIG. 7A taken along line 7B-7B;

FIG. 8 is a bottom plan view of another alternative embodiment of a club head of the present invention;

FIG. 9 is a top plan view of an alternative embodiment of a club head according to the present invention;

FIG. 10A is a front plan view of a club head according to an embodiment of the club head of FIG. 9;

FIG. 10B is a cross-sectional view of the club head of FIG. 10A, taken along lines 10B-10B;

FIG. 11 is a top plan view of the club head according to an embodiment of FIG. 9;

FIG. 12A is a front plan view of a club head according to an embodiment of the club head of FIG. 9;

FIG. 12B is a cross-sectional view of the club head of FIG. 12A, taken along lines 12B-12B;

FIG. 13 is a back perspective cut-out view of an embodiment of a club bead according to FIG. 9;

FIG. 14 is a back view of the club head of FIG. 13;

FIG. 15 is a perspective view of a weight tube according to the embodiment of the FIG. 13;

FIG. 16 is a back perspective cut-out view of another embodiment of a club head according to FIG. 9;

FIG. 17 is a perspective view of a weight tube according to the embodiment of the FIG. 17;

FIG. 18 is a back perspective cut-out view of another embodiment of a club head according to FIG. 9;

FIG. 19 is a bottom plan view of another embodiment of a club head according to FIG. 9;

FIG. 20 is a front perspective cut-out view of another embodiment of a club head according to FIG. 9;

FIG. 21 is a graph depicting the movement of the center of gravity along the y-axis and z-axis according to the embodiment of FIG. 13;

FIG. 22 is a graph depicting the movement of the center of gravity along the y-axis and x-axis according to the embodiment of FIG. 13;

FIG. 23 is a graph depicting the movement of the center of gravity along the y-axis and z-axis according to the embodiment of FIG. 16; and

FIG. 24 is a graph depicting the movement of the center of gravity along the y-axis and x-axis according to the embodiment of FIG. 16.

Claims

1. A golf club head, the club head comprising: a body having a face, a sole, a crown and a skirt joining the face, sole and crown, the body having a heel end and a toe end,wherein the body has an address position with a zero degree bounce portion on the sole and a center sole position with a negative bounce portion on the sole.

2. The golf club head of claim 1, wherein the negative bounce portion comprises a negative 0.5 to a negative 4.0 degree surface.

3. The golf club head of claim 1, wherein the negative bounce portion comprises a least a negative 2.0 degree surface.

4. The golf club head of claim 1, wherein the negative bounce portion further comprises a cutaway portion extending to the back of the sole.

5. The golf club head of claim 4, wherein the cutaway portion has a depth of about 0.05 to 0.5 inch.

6. The golf club head of claim 1, wherein the negative bounce portion is generally triangular.

7. The golf club head of claim 1, wherein the negative bounce portion is generally parabolic.

8. The golf club head of claim 1, wherein the negative bounce portion is located on the sole a distance of about 0.1 to 1.0 inch from the face of the club head.

9. The golf club head of claim 8, wherein the negative bounce portion is located on the sole a distance of about 0.35 to 0.65 inches from the face of the club head.

10. The golf club head of claim 1, wherein the negative bounce portion has a constant angle.

11. The golf club head of claim 1, wherein the negative bounce portion has an angle that varies toward the back of the sole.

12. The golf club head of claim 11, wherein the negative bounce portion has locations with multiple radii.

13. A golf club head, the club head comprising: a body having a face, a soles, a crown and a skirt joining the face, sole and crown, the body having a heel end and a toe end,wherein when the toe end is up at least 5 degrees a first measurement of the face measures square, and at a centered position a second measurement of the face measures different from the first measurement.

14. The golf club head of claim 13, wherein the face measures at least two degrees more open at the second measurement.

15. The golf club head of claim 13, wherein the face measure at least two degrees open at the second measurement.

16. The golf club head of claim 13, wherein the centered position comprises a negative bounce portion.

17. The golf club head of claim 16, wherein the negative bounce portion comprises a negative 0.5 to a negative 4.0 degree surface.

18. The golf club head of claim 17, wherein the negative bounce portion is a substantially flat surface.

19. The golf club head of claim 16, wherein the negative bounce portion comprises a least a negative 2.0 degree surface.

20. The golf club head of claim 16, wherein the negative bounce portion further comprises a cutaway portion extending to the back of the sole.

21. The golf club head of claim 20, wherein the cutaway portion has a depth of about 0.05 to 0.5 inch.

22. The golf club head of claim 16, wherein the negative bounce portion is generally triangular.

23. The golf club head of claim 16, wherein the negative bounce portion is generally parabolic.

24. The golf club head of claim 16, wherein the negative bounce portion is located on the sole a distance of about 0.1 to 1.0 inches from the face of the club head.

25. The golf club head of claim 24, wherein the negative bounce portion is located on the sole a distance of about 0.35 to 0.65 inches from the face of the club head.

26. The golf club head of claim 16, wherein the negative bounce portion has a constant angle.

27. The golf club head of claim 16, wherein the negative bounce portion has an angle that varies toward the back of the sole.

28. The golf club head of claim 13, wherein the second measurement of the centered position occurs at club head impact with a golf ball.

29. The golf club head of claim 28, wherein at the second measurement the shaft angle measures about 55 to 60 degrees from a ground surface.

30. The golf club head of claim 13, wherein the first measurement occurs at address position and the shaft angle measures about 55 to 45 degrees from a ground surface.