U.S. patent application number 10/647685 was filed with the patent office on 2005-03-03 for method for manufacturing a forged golf iron club head.
Invention is credited to Su, Charles.
Application Number | 20050044691 10/647685 |
Document ID | / |
Family ID | 34216565 |
Filed Date | 2005-03-03 |
United States Patent
Application |
20050044691 |
Kind Code |
A1 |
Su, Charles |
March 3, 2005 |
Method for manufacturing a forged golf iron club head
Abstract
A method for manufacturing a forged golf iron club head has acts
of forming a body in an investment casting process, integrally
forming a striking face with a hosel in a forging process and
combining the striking face with the body to achieve a golf club
head with a striking face. Accordingly, the iron club head has an
enhanced performance with a larger profile size and more permeate
weight design to gain an excellent accuracy and to prolong the
distance for golf ball flying. In addition, the versatile shape
design for more permeate weight or low and deep center of gravity
design can help to gain the larger sweet spot area and gain more
forgiveness, and makes the forged iron head to be an "easy hit"
iron club iron. And it still keeps the "pure energy transmission"
function of the classic forging.
Inventors: |
Su, Charles; (Tainan,
TW) |
Correspondence
Address: |
NIKOLAI & MERSEREAU, P.A.
900 SECOND AVENUE SOUTH
SUITE 820
MINNEAPOLIS
MN
55402
US
|
Family ID: |
34216565 |
Appl. No.: |
10/647685 |
Filed: |
August 25, 2003 |
Current U.S.
Class: |
29/527.5 ;
164/80; 29/428; 473/324 |
Current CPC
Class: |
A63B 53/02 20130101;
A63B 53/0416 20200801; A63B 53/047 20130101; A63B 53/00 20130101;
Y10T 29/49988 20150115; Y10T 29/49826 20150115; A63B 53/002
20200801 |
Class at
Publication: |
029/527.5 ;
164/080; 029/428; 473/324 |
International
Class: |
B22D 023/06; A63B
053/04 |
Claims
What is claimed is:
1. A method for manufacturing a forged golf iron club head
comprising acts as follows: forming a body with a sole, a back area
and a toe area in a casting process; integrally forming a striking
face with a hosel in a forging process; and combining the striking
face with the body to achieve a golf club head with a striking
face.
2. The method as claimed in claim 1, wherein the body is formed in
an investment casting process.
3. The method as claimed in claim 1, wherein the act of combining
the striking face with the body is an act of interference fitting
the striking face onto the body.
4. The method as claimed in claim 1, wherein the act of combining
the striking face with the body is in a welding process.
5. The method as claimed in claim 1, wherein the act of combining
the striking face with the body is in a brazing process.
Description
BACKGROUND OF THE INVENTION
[0001] 1. Field of the Invention
[0002] The present invention relates to a method for manufacturing
a forged golf iron club head, and more particularly to a method for
manufacturing a golf iron club head that has an enhanced
performance with a larger head size and a more permeate weight to
gain an excellent accuracy and to prolong the distance for golf
playing.
[0003] 2. Description of Related Art
[0004] The forged iron clubs have been used for over 100 years, and
actually the first iron club head was made by forging. The golf
players always like the soft feeling and solid touch of the forged
iron club head, especially the good golf players with low handicap.
So, that is the reason why there are over 50% of professional golf
players who are using the forged iron club heads for playing into
the golf tourments.
[0005] With reference to FIG. 2, a conventional forged iron club
head is forged from a metal billet which is substantially comprises
a body (30) with a striking face (34) and a hosel (32). The hosel
(32) is integrally formed on the body (30) and is connected to a
shaft (not shown). The striking face (34) is attached on one side
of the body (30) for striking golf balls. In a conventional method
for manufacturing the golf club head, the body (30) and the
striking face (34) are respectively formed in a forging process and
then are combined together. The all head is forged into one solid
piece, no matter the head is designed with back cavity shape or no
cavity/muscle back shape. There are some limitations with the
conventional forged iron head as follows:
[0006] a) Small Head Volume and Small Profile Size.
[0007] The metal's density becomes higher after forged process, for
example the original density of carbon steel before forging is at
7.80 g/cc, but it becomes 7.95 g/cc after forging process. So, the
iron club head has a limitation for designing the proper larger
size since the higher metal's density, especially the small head
size causes the difficulty for playing the forged long irons.
[0008] b) Not Versatile in Design.
[0009] For the forged back cavity shape design iron, it is very
difficult to design a deep and wide back cavity shape since the
metal's flow from forging is not as easy as the investment casting.
So, the forged iron head just can be designed with a simple and
shallow back cavity shape. But, it is difficult for creating the
good weight distribution design to improve to gain more
forgiveness.
[0010] In addition, the forged iron head cannot design to have
complicate shape and construction, just like the thin face wall
thickness design or the undercut back cavity design.
[0011] To overcome the shortcomings, the present invention tends to
provide a method for manufacturing a golf iron club head to
mitigate or obviate the aforementioned problems.
SUMMARY OF THE INVENTION
[0012] The main objective of the invention is to provide a method
for manufacturing a forged golf iron club head to enhance the
performance and to make the forged iron head to be an "easy hit"
iron club head. The method for manufacturing a forged golf club
head has acts of forming a body, integrally forming a striking face
with a hosel and combining the striking face with the body to
achieve a golf club head with a striking face.
[0013] Other objects, advantages and novel features of the
invention will become more apparent from the following detailed
description when taken in conjunction with the accompanying
drawings.
BRIEF DESCRIPTION OF THE DRAWINGS
[0014] FIG. 1 is an exploded perspective view of a golf iron club
head manufactured by a method in accordance with the present
invention; and
[0015] FIG. 2 is an exploded perspective view of a forged golf iron
club head manufactured by a conventional method in accordance with
the prior art.
DETAILED DESCRIPTION OF PREFERRED EMBODIMENT
[0016] With reference to FIG. 1, a method for manufacturing a golf
iron club head in accordance with the present invention comprises
the acts as follows:
[0017] (a) Forming a body (10) with a sole, a back area and a toe
area. The material for forming a body (10) can be stainless steel,
carbon steel, bronze or titanium alloy. The body (10) can be formed
in an investment casting process.
[0018] (b) Integrally forming a striking face (12) with a hosel
(14). The material for forming the striking face (12) can be
stainless steel, carbon steel, bronze or titanium alloy. The
striking face (12) with the hosel (14) can be formed in a forging
process.
[0019] (c) Combining the striking face (12) with the body (10) to
achieve a golf club head with a striking face. In practice, the act
of combining the striking face (12) with the body (10) can be an
act of force fitting the striking face (12) into the body (10) or
an act of combining the striking face (12) to the body (10) in a
welding process or a brazing process.
[0020] In such a method, the golfer's hitting power is transformed
from shaft to the striking face (12) through the hosel (14) because
the forged hosel (14) and striking face (12) are formed to one
piece. The Forged hosel (14) and the striking face (12) offer the
pure energy transmission as the pure forged iron head. In addition,
the force applied to the striking face (12) from a golf ball will
be directly transmitted to the hosel (14). The striking force
provided by the golf club will not influence the combination
between the body (10) and the striking face (12). Consequently, the
structural strength of the golf club head is enhanced, and the
useful life of the golf club head is prolonged.
[0021] In addition, because the body (10) is formed in an
investment casting process, the shape for the body (10) is easy to
be versatile and easy to design with more permeate weight for deep
center of gravity or low center of gravity function. In another
words, the iron club head made by the method in accordance with the
present invention has a larger profile size than a conventional
forged iron club head at a same weight. The iron club head has an
enhanced performance with a large head size and a permeate weight
to gain an excellent accuracy and to prolong the distance for golf
ball flying.
[0022] Furthermore, with a large volume and profile size, the iron
club head can be designed with a deep and wide back cavity shape or
a complicate shape and construction, such as a thin face wall
thickness design or an undercut back cavity design. Therefore, the
iron club head made by the method in accordance with the present
invention is versatile in design.
[0023] Even though numerous characteristics and advantages of the
present invention have been set forth in the foregoing description,
together with details of the structure and function of the
invention, the disclosure is illustrative only, and changes may be
made in detail, especially in matters of shape, size, and
arrangement of parts within the principles of the invention to the
full extent indicated by the broad general meaning of the terms in
which the appended claims are expressed.
* * * * *