Golf club head and method for making it

Abstract

A golf club head includes a hitting face and a changeable zone formed on a surface of the hitting face and having a physical feature different from that of the hitting face. Thus, all part or partial of the changeable zone of the hitting face has a hardness different from that of the hitting face, so that when the changeable zone is harder than the hitting face, the golf club head provides a greater hitting force on the golf ball due to the greater hardness of the changeable zone to increase the travel distance of the golf ball, and when the changeable zone is softer than the hitting face, the travel direction of the golf ball is controlled by the golf club head to facilitate a user controlling the travel direction the golf ball.

Description

BACKGROUND OF THE INVENTION

1. Field of the Invention

The present invention relates to a golf club head and, more particularly, to a golf club head and a method for making the golf club head.

2. Description of the Related Art

A conventional golf club head has a hitting face to hit a golf ball so as to move the golf ball during a period of distance. When the hitting face of the golf club head has a greater hardness, the hitting face of the golf club head provides a greater hitting force on the golf ball so as to increase the travel distance of the golf ball. On the contrary, when the hitting face of the golf club head has a smaller hardness, the contact time between the hitting face of the golf club head and the golf ball is increased so that the travel direction of the golf ball is controlled by the golf club head to facilitate a user controlling the travel direction the golf ball. However, the whole part of the hitting face of the golf club head has the same hardness so that the hardness of the hitting face of the golf club head cannot be changed, thereby decreasing the versatility of the golf club head.

BRIEF SUMMARY OF THE INVENTION

In accordance with one embodiment of the present invention, there is provided a golf club head, comprising a hitting face, and a changeable zone formed on a surface of the hitting face and having a physical feature different from that of the hitting face. Preferably, the changeable zone has a crystal arrangement that is changed and different from that of the hitting face. Preferably, the changeable zone has a structure different from that of the hitting face. Preferably, the changeable zone has a hardness different from that of the hitting face. Preferably, all part of the changeable zone has a hardness different from that of the hitting face. Preferably, partial of the changeable zone has a hardness different from that of the hitting face.

In accordance with one embodiment of the present invention, there is provided a method for making a golf club head which has a hitting face and a changeable zone formed on a surface of the hitting face, comprising working the changeable zone and the hitting face so that the changeable zone has a physical feature different from that of the hitting face. Preferably, the changeable zone has a crystal arrangement that is changed and different from that of the hitting face. Preferably, the changeable zone has a structure different from that of the hitting face. Preferably, the changeable zone has a hardness different from that of the hitting face. Preferably, the changeable zone and the hitting face are worked by punching, and the changeable zone and the hitting face are punched by different times. Preferably, the changeable zone and the hitting face are worked by heat treatment. Preferably, the changeable zone and the hitting face are worked by rolling. Preferably, all part or partial of the changeable zone has a hardness different from that of the hitting face.

The primary objective of the present invention is to provide a golf club head and a method for making the golf club head, wherein all part or partial of the changeable zone of the hitting face has a hardness different from (greater or smaller than) that of the hitting face, so that when the changeable zone is harder than the hitting face, the golf club head provides a greater hitting force on the golf ball due to the greater hardness of the changeable zone to increase the travel distance of the golf ball, and when the changeable zone is softer than the hitting face, the vibration is reduced and the travel direction of the golf ball is controlled by the golf club head to facilitate a user controlling the travel direction the golf ball.

Another objective of the present invention is to provide a golf club head and a method for making the golf club head, wherein when the changeable zone of the hitting face of the golf club head is worked, the crystal arrangement of the changeable zone is changed so that the changeable zone has a structure different from that of the hitting face and has a hardness different from that of the hitting face.

Further benefits and advantages of the present invention will become apparent after a careful reading of the detailed description with appropriate reference to the accompanying drawings.

BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE DRAWING(S)

FIG. 1 is a flow chart of a method for making a golf club in accordance with the preferred embodiment of the present invention.

FIG. 2 is a flow chart of the method for making a second blank of the golf club as shown in FIG. 1.

FIG. 3 is a top view of the second blank of the golf club as shown in FIG. 2.

FIG. 4 is a flow chart of the method for making a second blank of the golf club in accordance with another preferred embodiment of the present invention.

FIG. 5 is a flow chart of the method for making a second blank of the golf club in accordance with another preferred embodiment of the present invention.

FIG. 6 is a flow chart of the method for making a second blank of the golf club in accordance with another preferred embodiment of the present invention.

FIG. 7 is a flow chart of a method for making a golf club in accordance with another preferred embodiment of the present invention.

DETAILED DESCRIPTION OF THE INVENTION

Referring to the drawings and initially to FIG. 1, a method for making a golf club head in accordance with the preferred embodiment of the present invention comprises a first step of providing a circular bar 1, a second step of working the circular bar 1 by a bending and stamping process to form a first blank 2, a third step of working the first blank 2 by a rough forging and stamping process by two to three times to form a second blank 3, a fourth step of working the second blank 3 by a finish forging and stamping process by one to two times to form a third blank 4, and a fifth step of working the third blank 4 by a lapping and coloring process to form a product of a golf club head.

Referring to FIGS. 2 and 3, the second blank 3 has a hitting face 31 provided with a changeable zone 32 which is encompassed by and located at a middle position of the hitting face 31. In the preferred embodiment of the present invention, the changeable zone 32 is a protruding portion protruding outwardly from the hitting face 31 of the second blank 3. Thus, when the second blank 3 is worked, the changeable zone 32 is worked by punching to flush with the hitting face 31 so that the hitting face 31 and the changeable zone 32 form a flat smooth surface. In such a manner, the changeable zone 32 has a crystal arrangement that is changed and different from that of the hitting face 31 by punching so that the changeable zone 32 has a structure different from that of the hitting face 31. Thus, the changeable zone 32 has a hardness different from that of the hitting face 31. In the preferred embodiment of the present invention, the changeable zone 32 is a hitting zone and has a hardness greater than that of the hitting face 31 when the changeable zone 32 is a protruding portion protruding outwardly from the hitting face 31 of the second blank 3 so that the changeable zone 32 is harder than the hitting face 31.

Thus, when the hitting face 31 of the golf club head hits a golf ball, the hitting face 31 of the golf club head provides a greater hitting force on the golf ball due to the greater hardness of the changeable zone 32 to increase the travel distance of the golf ball.

In conclusion, when the changeable zone 32 of the hitting face 31 of the golf club head is worked, the crystal arrangement of the changeable zone 32 is changed so that the changeable zone 32 has a structure different from that of the hitting face 31. Thus, all part or partial of the changeable zone 32 of the hitting face 31 has a hardness different from (greater or smaller than) that of the hitting face 31. At this time, the changeable zone 32 of the hitting face 31 of the golf club head is worked by punching by different times, worked by heat treatment or worked by punching and heat treatment.

Referring to FIG. 4, the changeable zone 32 is a recessed portion formed in the hitting face 31 of the second blank 3. Thus, when the second blank 3 is worked, the hitting face 31 is worked by punching to flush with the changeable zone 32 so that the hitting face 31 and the changeable zone 32 form a flat smooth surface. In such a manner, the hitting face 31 has a crystal arrangement that is changed and different from that of the changeable zone 32 by punching so that the hitting face 31 has a structure different from that of the changeable zone 32. Thus, the changeable zone 32 has a hardness different from that of the hitting face 31. In the preferred embodiment of the present invention, the changeable zone 32 has a hardness smaller than that of the hitting face 31 when the changeable zone 32 is a recessed portion formed in the hitting face 31 of the second blank 3 so that the changeable zone 32 is softer than the hitting face 31.

Thus, when the hitting face 31 of the golf club head hits a golf ball, the contact time between the hitting face 31 of the golf club head and the golf ball is increased due to the softer feature of the changeable zone 32 so that the travel direction the golf ball is controlled by the golf club head to facilitate a user controlling the travel direction the golf ball. In addition, the changeable zone 32 has a softer feature to reduce the vibration that is produced when the hitting face 31 of the golf club head hits the golf ball, thereby providing a comfortable sensation to the user.

Referring to FIG. 5, the changeable zone 32 is a convex protruding portion protruding outwardly from the hitting face 31 of the second blank 3.

Referring to FIG. 6, the changeable zone 32 is a concave recessed portion formed in the hitting face 31 of the second blank 3.

Accordingly, all part or partial of the changeable zone 32 of the hitting face 31 has a hardness different from (greater or smaller than) that of the hitting face 31, so that when the changeable zone 32 is harder than the hitting face 31, the golf club head provides a greater hitting force on the golf ball due to the greater hardness of the changeable zone 32 to increase the travel distance of the golf ball, and when the changeable zone 32 is softer than the hitting face 31, the vibration is reduced and the travel direction of the golf ball is controlled by the golf club head to facilitate a user controlling the travel direction the golf ball. In addition, when the changeable zone 32 of the hitting face 31 of the golf club head is worked, the crystal arrangement of the changeable zone 32 is changed so that the changeable zone 32 has a structure different from that of the hitting face 31 and has a hardness different from that of the hitting face.

Referring to FIG. 7, the golf club head is made of wood material, and the changeable zone 52 is a protruding portion protruding outwardly from the hitting face 51 of the second blank 5 of the golf club head. In operation, when the second blank 5 is worked by a rolling process, the changeable zone 52 is worked by rolling to flush with the hitting face 51 so that the hitting face 51 and the changeable zone 52 form a flat smooth surface. In such a manner, the changeable zone 52 has a crystal arrangement that is changed and different from that of the hitting face 51 by rolling so that the changeable zone 52 has a structure different from that of the hitting face 51. Thus, the changeable zone 52 has a hardness different from that of the hitting face 51. In the preferred embodiment of the present invention, the changeable zone 52 is a hitting zone and has a hardness greater than that of the hitting face 51 when the changeable zone 52 is a protruding portion protruding outwardly from the hitting face 51 of the second blank 5 so that the changeable zone 52 is harder than that of the hitting face 51.

Although the invention has been explained in relation to its preferred embodiment(s) as mentioned above, it is to be understood that many other possible modifications and variations can be made without departing from the scope of the present invention. It is, therefore, contemplated that the appended claim or claims will cover such modifications and variations that fall within the true scope of the invention.

Claims

1. A golf club head, comprising:

a hitting face;

a changeable zone formed on a surface of the hitting face and having a physical feature different from that of the hitting face.

2. The golf club head in accordance with claim 1, wherein the changeable zone has a crystal arrangement that is changed and different from that of the hitting face.

3. The golf club head in accordance with claim 1, wherein the changeable zone has a structure different from that of the hitting face.

4. The golf club head in accordance with claim 1, wherein the changeable zone has a hardness different from that of the hitting face.

5. The golf club head in accordance with claim 1, wherein the changeable zone has a hardness greater than that of the hitting face so that the changeable zone is harder than the hitting face.

6. The golf club head in accordance with claim 1, wherein the changeable zone has a hardness smaller than that of the hitting face so that the changeable zone is softer than the hitting face.

7. The golf club head in accordance with claim 1, wherein the changeable zone is a hitting zone.

8. The golf club head in accordance with claim 1, wherein all part of the changeable zone has a hardness different from that of the hitting face.

9. The golf club head in accordance with claim 1, wherein partial of the changeable zone has a hardness different from that of the hitting face.

10. The golf club head in accordance with claim 1, wherein the changeable zone is encompassed by the hitting face.

11. The golf club head in accordance with claim 1, wherein the changeable zone is located at a middle position of the hitting face.

12. The golf club head in accordance with claim 1, wherein the hitting face and the changeable zone form a flat smooth surface.

13. A method for making a golf club head which has a hitting face and a changeable zone formed on a surface of the hitting face, comprising:

working the changeable zone and the hitting face so that the changeable zone has a physical feature different from that of the hitting face.

14. The method in accordance with claim 13, wherein the changeable zone has a crystal arrangement that is changed and different from that of the hitting face.

15. The method in accordance with claim 13, wherein the changeable zone has a structure different from that of the hitting face.

16. The method in accordance with claim 13, wherein the changeable zone has a hardness different from that of the hitting face.

17. The method in accordance with claim 13, wherein the changeable zone and the hitting face are worked by punching, and the changeable zone and the hitting face are punched by different times.

18. The method in accordance with claim 13, wherein the changeable zone and the hitting face are worked by heat treatment.

19. The method in accordance with claim 13, wherein the changeable zone and the hitting face are worked by rolling.

20. The method in accordance with claim 13, wherein all part or partial of the changeable zone has a hardness different from that of the hitting face.