U.S. patent application number 11/728937 was filed with the patent office on 2008-10-02 for golf club head and method for making it.
This patent application is currently assigned to WELL JET INTERNATIONAL CO., LTD.. Invention is credited to Yung-Hsiung Chen.
Application Number | 20080242441 11/728937 |
Document ID | / |
Family ID | 39795398 |
Filed Date | 2008-10-02 |
United States Patent
Application |
20080242441 |
Kind Code |
A1 |
Chen; Yung-Hsiung |
October 2, 2008 |
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.
Inventors: |
Chen; Yung-Hsiung; (Tashu,
TW) |
Correspondence
Address: |
NIKOLAI & MERSEREAU, P.A.
900 SECOND AVENUE SOUTH, SUITE 820
MINNEAPOLIS
MN
55402
US
|
Assignee: |
WELL JET INTERNATIONAL CO.,
LTD.
Apia
WS
|
Family ID: |
39795398 |
Appl. No.: |
11/728937 |
Filed: |
March 27, 2007 |
Current U.S.
Class: |
473/329 |
Current CPC
Class: |
A63B 2209/00 20130101;
A63B 53/047 20130101; A63B 53/0416 20200801; A63B 60/00 20151001;
A63B 53/04 20130101 |
Class at
Publication: |
473/329 |
International
Class: |
A63B 53/00 20060101
A63B053/00 |
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.
Description
BACKGROUND OF THE INVENTION
[0001] 1. Field of the Invention
[0002] 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.
[0003] 2. Description of the Related Art
[0004] 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
[0005] 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.
[0006] 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.
[0007] 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.
[0008] 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.
[0009] 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)
[0010] FIG. 1 is a flow chart of a method for making a golf club in
accordance with the preferred embodiment of the present
invention.
[0011] FIG. 2 is a flow chart of the method for making a second
blank of the golf club as shown in FIG. 1.
[0012] FIG. 3 is a top view of the second blank of the golf club as
shown in FIG. 2.
[0013] 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.
[0014] 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.
[0015] 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.
[0016] 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
[0017] 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.
[0018] 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.
[0019] 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.
[0020] 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.
[0021] 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.
[0022] 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.
[0023] 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.
[0024] Referring to FIG. 6, the changeable zone 32 is a concave
recessed portion formed in the hitting face 31 of the second blank
3.
[0025] 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.
[0026] 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.
[0027] 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.
* * * * *