US20020160858A1 - Golf club head and process for making the same - Google Patents
Golf club head and process for making the same Download PDFInfo
- Publication number
- US20020160858A1 US20020160858A1 US09/844,319 US84431901A US2002160858A1 US 20020160858 A1 US20020160858 A1 US 20020160858A1 US 84431901 A US84431901 A US 84431901A US 2002160858 A1 US2002160858 A1 US 2002160858A1
- Authority
- US
- United States
- Prior art keywords
- panel
- hollow body
- striking
- striking panel
- bottom panel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/28—Shaping operations therefor
- B29C70/40—Shaping or impregnating by compression not applied
- B29C70/42—Shaping or impregnating by compression not applied for producing articles of definite length, i.e. discrete articles
- B29C70/44—Shaping or impregnating by compression not applied for producing articles of definite length, i.e. discrete articles using isostatic pressure, e.g. pressure difference-moulding, vacuum bag-moulding, autoclave-moulding or expanding rubber-moulding
-
- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B53/00—Golf clubs
- A63B53/04—Heads
- A63B53/0433—Heads with special sole configurations
-
- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B53/00—Golf clubs
- A63B53/04—Heads
- A63B53/0437—Heads with special crown configurations
-
- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B53/00—Golf clubs
- A63B53/04—Heads
- A63B53/0466—Heads wood-type
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/68—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts by incorporating or moulding on preformed parts, e.g. inserts or layers, e.g. foam blocks
- B29C70/86—Incorporated in coherent impregnated reinforcing layers, e.g. by winding
-
- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B2209/00—Characteristics of used materials
- A63B2209/02—Characteristics of used materials with reinforcing fibres, e.g. carbon, polyamide fibres
- A63B2209/023—Long, oriented fibres, e.g. wound filaments, woven fabrics, mats
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/52—Sports equipment ; Games; Articles for amusement; Toys
- B29L2031/5227—Clubs
Definitions
- the invention relates to a golf club head and a process for making the same, more particularly to a process for making a golf club head which is relatively light, which has a relatively large striking face, and which has different colors.
- golf club heads can be formed from titanium alloy, stainless steel or aluminum alloy, specific welding solders have to be used in welding the striking panel and the club head together.
- titanium solders have to be used for titanium-formed club heads. There are currently very few substitutes therefor.
- the main object of the present invention is to provide a process for making a golf club head that has a large striking panel but is light-weight, and that has different colors.
- a process for making a golf club head includes: forming an open hollow body which is made of metal and which defines a front striking panel, a bottom panel and a hollow neck section of the golf club head, the bottom panel extending rearwardly from a bottom end of the striking panel, the neck section being connected to the striking panel and the bottom panel; forming a moldable closed hollow body by using a resin-impregnated fiber sheet material, and positioning the closed hollow body inside the open hollow body; placing an air bag inside the closed hollow body; placing the open and closed hollow bodies in a mold; and heating the mold and blowing air into the air bag so as to pressurize the closed hollow body against an inner surface of the open hollow body and an inner surface of the mold until the resin-impregnated fiber sheet material is cured.
- a golf club head produced according to the afore-mentioned process includes a front striking panel, a bottom panel extending rearwardly from a bottom end of the striking panel, a top wall extending rearwardly from a top end of the striking panel, a hollow neck section extending upward from one end of the top end of the striking panel and connected to the bottom panel, and a lateral wall interconnecting the bottom panel and the top wall and extending from one side of the striking panel to another opposite side of the striking panel.
- the front striking panel, the bottom panel and the hollow neck section are made of metal, and the top and lateral walls are made of plastic.
- FIG. 1 is a schematic perspective view of an open hollow body for use in a process of making a golf club head according to the present invention
- FIG. 2 is a schematic sectional view of the preferred embodiment of a golf club head, showing a moldable closed hollow body disposed inside the open hollow body of FIG. 1 to form a semi-finished product;
- FIG. 3 is a schematic sectional view showing the semi-finished product when provided with an air bag and when placed inside a mold;
- FIG. 4 is the same view as FIG. 3, but with the closed hollow body being pressurized against inner surfaces of the open hollow body and the mold;
- FIG. 5 is a sectional view of the product taken out from the mold
- FIG. 6 is another schematic sectional view of the product of FIG. 5, which is taken along a line perpendicular to the plane of the sectional view of FIG. 5;
- FIG. 7 is a schematic perspective view of the product of FIG. 5.
- FIG. 1 shows a metal open hollow body 21 which is used in a preferred embodiment of the process according to the present invention.
- the open hollow body 21 is made of a titanium alloy.
- the open hollow body 21 defines a front striking panel 211 , a bottom panel 213 and a hollow neck section 212 .
- the bottom panel 213 extends rearwardly from a bottom end of the striking panel 211 .
- the neck section 212 is connected to the striking panel 211 and the bottom panel 213 .
- the striking panel 211 is formed with an inwardly projecting flanged end 2110 that extends along a top end of the striking panel 211 .
- the bottom panel 213 is formed with an inwardly projecting flanged end 2130 along a rear end thereof (see FIG. 5).
- a moldable closed hollow body 22 is formed by using a resin-impregnated fiber sheet material, and is positioned inside the open hollow body 21 .
- the resin-impregnated fiber sheet material is arranged with four to ten layers, and includes a carbon fiber and a resin, such as epoxy resin.
- the moldable closed hollow body 22 is adhered to inner surfaces of the striking panel 211 and the bottom panel 213 , and includes a reinforcing layer 222 extending from a top end of the striking panel 211 to the neck section 212 , a bottom wall 221 lining the bottom panel 213 , a top wall 225 extending rearwardly from the top end of the striking panel 211 , a front wall 226 (see FIG.
- a mold 3 comprising upper and lower mold halves 31 , 32 is prepared.
- a mouth 231 is mounted in the injection hole 224 to connect fluidly with the air bag 23 .
- the semi-finished product along with the mouth 231 is placed inside the lower mold half 32 such that the mouth 231 extends outwardly of the lower mold half 32 .
- the upper mold half 31 is placed on top of the lower mold half 32 .
- the mold 3 is heated to a temperature of about 130° C.
- air is blown into the air bag 23 using an air pump head 4 (shown in phantom lines) at a pressure of 3 to 7 mg/cm 2 to inflate the air bag 23 so as to pressurize the closed hollow body 22 against an inner surface of the open hollow body 21 and an inner surface 35 of the mold 3 until the resin-impregnated fiber sheet material is cured, thereby forming a product 24 , which has to undergo further finishing steps.
- the air pump head 4 is detached from the mouth 231 , and the product 24 is released from the mold 3 .
- a sealing piece 25 is disposed to close the injection hole 224 after the air bag 23 is removed from the product 24 .
- the product 24 is subjected to surface finishing operations, including grinding, polishing, etc., to yield a finished golf club head 2 as shown in FIG. 7.
- the golf club head 2 thus produced according to the above-described process includes: the front striking panel 211 ; the bottom panel 213 , which extends rearwardly from the bottom end of the striking panel 211 ; the top wall 225 , which extends rearwardly from the top end of the striking panel 211 ; the hollow neck section 212 , which extends upward from one end of the top end of the striking panel 211 and which is connected to the bottom panel 213 ; and the lateral wall 220 , which interconnects the bottom panel 213 and the top wall 225 and which extends from one side of the striking panel 211 to another opposite side of the striking panel 211 .
- the front striking panel 211 , the bottom panel 213 and the hollow neck section 212 are made of metal, whereas the top and lateral walls 225 , 220 are made of plastic.
- the golf club head according to the present invention has the following advantages:
- the striking panel, the bottom panel and the neck section of the golf club head are integrally formed from a light-weight metal material, such as titanium alloy, and since the rest of the golf club head is formed from a resin-impregnated fiber sheet material which is of a much lighter weight, the golf club head as a whole is comparatively lighter than conventional golf club heads.
- the striking panel can be enlarged to increase the striking area with little effect on the overall weight of the golf club head.
- the parts of the golf club head that are formed from resin-impregnated fiber sheet material can be coated with coatings or paints of different colors during the finishing steps to make the golf club head more colorful and appealing.
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Composite Materials (AREA)
- Mechanical Engineering (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Physical Education & Sports Medicine (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Golf Clubs (AREA)
Abstract
In a process for making a golf club head, an open hollow body is formed from metal to define a front striking panel, a bottom panel and a hollow neck section of the golf club head. The bottom panel extends rearwardly from a bottom end of the striking panel. The neck section is connected to the striking and bottom panels. A moldable closed hollow body is formed using a resin-impregnated fiber sheet material, and is positioned inside the open hollow body. An air bag is placed inside the closed hollow body. The open and closed hollow bodies are subsequently placed in a mold. The mold is heated, and air is blown into the air bag so as to pressurize the closed hollow body against inner surfaces of the open hollow body and the mold until the resin-impregnated fiber sheet material is cured.
Description
- 1. Field of the Invention
- The invention relates to a golf club head and a process for making the same, more particularly to a process for making a golf club head which is relatively light, which has a relatively large striking face, and which has different colors.
- 2. Description of the Related Art
- Golf appeals to people mainly because it is played on green fields and different landscapes where players can play with ease and style. The crisp sound of the club hitting the golf ball is relished by many golf players. Those who are familiar with the game know that there are different types of golf clubs depending on their applications and the terrain on which they are used. There are wood clubs, iron clubs and putter clubs. The process of making a golf club involves the steps of forming a club head and connecting the club head to a striking panel by welding. However, since there are certain specifications and limitations with regard to the size and weight of a golf club in the design of club heads in order to ensure desirable ball controllability of the golf club, manufacturers cannot, for the sake of increasing the ball hitting rate, merely increase the area of the striking panel. This is because increasing the area of the striking panel inevitably requires the enlargement of the size of the club head, which will lead to increased weight of the golf club as a whole. This means increased load for the golf player. Therefore, how to manufacture a light-weight golf club with an increased striking area so as to increase the ball hitting rate is a major concern in the art. In addition, there exist certain drawbacks, as set forth below, with the manufacture of conventional golf clubs:
- 1. Since the striking panel and the club head of a conventional golf club are welded together manually, and since the quality of welding depends on the skill and experience of the operators, the quality of the golf club heads may differ. Poor workmanship may even result in formation of holes in the striking panel or excessive burrs or insufficient material at the juncture between the striking panel and the club head, which makes subsequent finishing operations difficult.
- 2. For the reason stated above, the production speed is relatively low, and the output of individual operators differs.
- 3. Since golf club heads can be formed from titanium alloy, stainless steel or aluminum alloy, specific welding solders have to be used in welding the striking panel and the club head together. For titanium-formed club heads, for instance, titanium solders have to be used. There are currently very few substitutes therefor.
- 4. In view of the fact that golf club heads formed from a specific metal material require solder materials of the same material, the metallic color or luster of the golf club head is monochromatic, which is monotonous.
- Therefore, the main object of the present invention is to provide a process for making a golf club head that has a large striking panel but is light-weight, and that has different colors.
- According to one aspect of the present invention, a process for making a golf club head includes: forming an open hollow body which is made of metal and which defines a front striking panel, a bottom panel and a hollow neck section of the golf club head, the bottom panel extending rearwardly from a bottom end of the striking panel, the neck section being connected to the striking panel and the bottom panel; forming a moldable closed hollow body by using a resin-impregnated fiber sheet material, and positioning the closed hollow body inside the open hollow body; placing an air bag inside the closed hollow body; placing the open and closed hollow bodies in a mold; and heating the mold and blowing air into the air bag so as to pressurize the closed hollow body against an inner surface of the open hollow body and an inner surface of the mold until the resin-impregnated fiber sheet material is cured.
- According to another aspect of the present invention, a golf club head produced according to the afore-mentioned process includes a front striking panel, a bottom panel extending rearwardly from a bottom end of the striking panel, a top wall extending rearwardly from a top end of the striking panel, a hollow neck section extending upward from one end of the top end of the striking panel and connected to the bottom panel, and a lateral wall interconnecting the bottom panel and the top wall and extending from one side of the striking panel to another opposite side of the striking panel. The front striking panel, the bottom panel and the hollow neck section are made of metal, and the top and lateral walls are made of plastic.
- Other features and advantages of the present invention will become apparent in the following detailed description of the preferred embodiment with reference to the accompanying drawings, of which:
- FIG. 1 is a schematic perspective view of an open hollow body for use in a process of making a golf club head according to the present invention;
- FIG. 2 is a schematic sectional view of the preferred embodiment of a golf club head, showing a moldable closed hollow body disposed inside the open hollow body of FIG. 1 to form a semi-finished product;
- FIG. 3 is a schematic sectional view showing the semi-finished product when provided with an air bag and when placed inside a mold;
- FIG. 4 is the same view as FIG. 3, but with the closed hollow body being pressurized against inner surfaces of the open hollow body and the mold;
- FIG. 5 is a sectional view of the product taken out from the mold;
- FIG. 6 is another schematic sectional view of the product of FIG. 5, which is taken along a line perpendicular to the plane of the sectional view of FIG. 5; and
- FIG. 7 is a schematic perspective view of the product of FIG. 5.
- FIG. 1 shows a metal open
hollow body 21 which is used in a preferred embodiment of the process according to the present invention. In this embodiment, the openhollow body 21 is made of a titanium alloy. The openhollow body 21 defines a frontstriking panel 211, abottom panel 213 and ahollow neck section 212. Thebottom panel 213 extends rearwardly from a bottom end of thestriking panel 211. Theneck section 212 is connected to thestriking panel 211 and thebottom panel 213. Furthermore, thestriking panel 211 is formed with an inwardly projectingflanged end 2110 that extends along a top end of thestriking panel 211. Thebottom panel 213 is formed with an inwardly projecting flangedend 2130 along a rear end thereof (see FIG. 5). - With reference to FIGS. 1 and 2, a moldable closed
hollow body 22 is formed by using a resin-impregnated fiber sheet material, and is positioned inside the openhollow body 21. The resin-impregnated fiber sheet material is arranged with four to ten layers, and includes a carbon fiber and a resin, such as epoxy resin. The moldable closedhollow body 22 is adhered to inner surfaces of thestriking panel 211 and thebottom panel 213, and includes areinforcing layer 222 extending from a top end of thestriking panel 211 to theneck section 212, abottom wall 221 lining thebottom panel 213, atop wall 225 extending rearwardly from the top end of thestriking panel 211, a front wall 226 (see FIG. 5) lining thestriking panel 211, and alateral wall 220 which extends from one side of thestriking panel 211 to the opposite side of thestriking panel 211 between thebottom panel 213 and thetop wall 225. Resin-impregnatedfiber strips corner spaces 215, 216 (see FIG. 5) defined by theflanged ends striking panel 211 and thebottom panel 213, respectively. Aninjection hole 224 is formed in thelateral wall 220 of the closedhollow body 22, and anair bag 23 is placed inside the closedhollow body 22, as shown in FIG. 3. Thus, a semi-finished product is obtained. - Referring to FIGS. 3 and 4, a
mold 3 comprising upper andlower mold halves mouth 231 is mounted in theinjection hole 224 to connect fluidly with theair bag 23. Then, the semi-finished product along with themouth 231 is placed inside thelower mold half 32 such that themouth 231 extends outwardly of thelower mold half 32. Then, theupper mold half 31 is placed on top of thelower mold half 32. Themold 3 is heated to a temperature of about 130° C. At the same time, air is blown into theair bag 23 using an air pump head 4 (shown in phantom lines) at a pressure of 3 to 7 mg/cm2 to inflate theair bag 23 so as to pressurize the closedhollow body 22 against an inner surface of the openhollow body 21 and aninner surface 35 of themold 3 until the resin-impregnated fiber sheet material is cured, thereby forming aproduct 24, which has to undergo further finishing steps. Thereafter, theair pump head 4 is detached from themouth 231, and theproduct 24 is released from themold 3. Referring to FIG. 6, asealing piece 25 is disposed to close theinjection hole 224 after theair bag 23 is removed from theproduct 24. Theproduct 24 is subjected to surface finishing operations, including grinding, polishing, etc., to yield a finished golf club head 2 as shown in FIG. 7. - The golf club head2 thus produced according to the above-described process includes: the front
striking panel 211; thebottom panel 213, which extends rearwardly from the bottom end of thestriking panel 211; thetop wall 225, which extends rearwardly from the top end of thestriking panel 211; thehollow neck section 212, which extends upward from one end of the top end of thestriking panel 211 and which is connected to thebottom panel 213; and thelateral wall 220, which interconnects thebottom panel 213 and thetop wall 225 and which extends from one side of thestriking panel 211 to another opposite side of thestriking panel 211. The frontstriking panel 211, thebottom panel 213 and thehollow neck section 212 are made of metal, whereas the top andlateral walls - In view of the aforesaid, the golf club head according to the present invention has the following advantages:
- 1. Since the striking panel, the bottom panel and the neck section of the golf club head are integrally formed from a light-weight metal material, such as titanium alloy, and since the rest of the golf club head is formed from a resin-impregnated fiber sheet material which is of a much lighter weight, the golf club head as a whole is comparatively lighter than conventional golf club heads.
- 2. In view of the light-weight of the golf club head of the present invention, the striking panel can be enlarged to increase the striking area with little effect on the overall weight of the golf club head.
- 3. The parts of the golf club head that are formed from resin-impregnated fiber sheet material can be coated with coatings or paints of different colors during the finishing steps to make the golf club head more colorful and appealing.
- While the present invention has been described in connection with what is considered the most practical and preferred embodiment, it is understood that this invention is not limited to the disclosed embodiment but is intended to cover various arrangements included within the spirit and scope of the broadest interpretation so as to encompass all such modifications and equivalent arrangements.
Claims (10)
1. A process for making a golf club head, comprising:
forming an open hollow body which is made of metal and which defines a front striking panel, a bottom panel and a hollow neck section of the golf club head, said bottom panel extending rearwardly from a bottom end of said striking panel, said neck section being connected to said striking panel and said bottom panel;
forming a moldable closed hollow body by using a resin-impregnated fiber sheet material, and positioning said closed hollow body inside said open hollow body;
placing an air bag inside said closed hollow body;
placing said open and closed hollow bodies in a mold; and
heating said mold and blowing air into said air bag so as to pressurize said closed hollow body against an inner surface of said open hollow body and an inner surface of said mold until said resin-impregnated fiber sheet material is cured.
2. The process as claimed in claim 1 , wherein said resin-impregnated fiber sheet material is arranged with four to ten layers.
3. The process as claimed in claim 2 , wherein said resin-impregnated fiber sheet material includes a carbon fiber and an epoxy resin.
4. The process as claimed in claim 3 , wherein the air is introduced into said air bag at a pressure of 3-7 kg/cm.
5. The process as claimed in claim 4 , wherein said mold is heated to a temperature of about 130° C.
6. The process as claimed in claim 5 , wherein said open hollow body is made of a titanium alloy.
7. The process as claimed in claim 1 , wherein said moldable closed hollow body is pressurized against inner surfaces of said striking panel and said bottom panel to line said inner surfaces of said striking panel and said bottom panel and against said mold to define a top wall extending rearwardly from a top end of said striking panel, and a lateral wall extending between said bottom panel and said top wall and extending from one side of said striking panel to another opposite side of said striking panel.
8. The process as claimed in claim 7 , wherein said striking panel is formed with an inwardly projecting flanged end extending along said top end of said striking panel, and said bottom panel is formed with an inwardly projecting flanged end along a rear end thereof.
9. The process as claimed in claim 8 , wherein a resin-impregnated fiber strip is inserted into a corner space defined by each of said flanged ends of said striking panel and said bottom panel before said closed hollow body is placed inside said mold.
10. A golf club head produced according to the process of claim 1 , comprising a front striking panel, a bottom panel extending rearwardly from a bottom end of said striking panel, a top wall extending rearwardly from a top end of said striking panel, a hollow neck section extending upward from one end of said top end of said striking panel and connected to said bottom panel, and a lateral wall interconnecting said bottom panel and said top wall and extending from one side of said striking panel to another opposite side of said striking panel, wherein said front striking panel, said bottom panel and said hollow neck section are made of metal, and said top and lateral walls are made of plastic.
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
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US09/844,319 US20020160858A1 (en) | 2001-04-27 | 2001-04-27 | Golf club head and process for making the same |
JP2001136301A JP2002336389A (en) | 2001-04-27 | 2001-05-07 | Golf club head and its production method |
US10/982,913 US20050064956A1 (en) | 2001-01-20 | 2004-11-08 | Golf club head and process for making the same |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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US09/844,319 US20020160858A1 (en) | 2001-04-27 | 2001-04-27 | Golf club head and process for making the same |
JP2001136301A JP2002336389A (en) | 2001-04-27 | 2001-05-07 | Golf club head and its production method |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US10/982,913 Division US20050064956A1 (en) | 2001-01-20 | 2004-11-08 | Golf club head and process for making the same |
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US20020160858A1 true US20020160858A1 (en) | 2002-10-31 |
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US09/844,319 Abandoned US20020160858A1 (en) | 2001-01-20 | 2001-04-27 | Golf club head and process for making the same |
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JP (1) | JP2002336389A (en) |
Cited By (26)
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US20040157680A1 (en) * | 2003-02-09 | 2004-08-12 | Fu Sheng Industrial Co., Ltd. | Golf club head and manufacturing method therefor |
US20050026722A1 (en) * | 2003-06-18 | 2005-02-03 | Bridgestone Sports Co., Ltd. | Golf club head |
US20050221914A1 (en) * | 2004-04-02 | 2005-10-06 | Bridgestone Sports Co., Ltd. | Golf club head |
US20050233831A1 (en) * | 2004-03-31 | 2005-10-20 | Bridgestone Sports Co., Ltd. | Golf club head |
US20050250597A1 (en) * | 2002-05-27 | 2005-11-10 | Bridgestone Sports Co., Ltd. | Golf club head |
GB2418623A (en) * | 2004-10-04 | 2006-04-05 | Bridgestone Sports Co Ltd | Hollow golf club head |
US20060084525A1 (en) * | 2004-10-20 | 2006-04-20 | Bridgestone Sports Co., Ltd. | Golf club head |
US20060100032A1 (en) * | 2004-11-05 | 2006-05-11 | Bridgestone Sports Co., Ltd. | Golf club head |
US7147576B2 (en) | 2002-06-19 | 2006-12-12 | Bridgestone Sports Co., Ltd. | Golf club head |
US20070298907A1 (en) * | 2003-06-18 | 2007-12-27 | Bridgestone Sports Co., Ltd. | Golf club head |
US7344452B2 (en) | 2003-06-18 | 2008-03-18 | Bridgestone Sports Co., Ltd. | Golf club head |
US20080268980A1 (en) * | 2005-04-21 | 2008-10-30 | Breier Joshua G | Golf club head with concave insert |
US20090017933A1 (en) * | 2007-07-13 | 2009-01-15 | Nike, Inc. | Putters with Enhanced Alignment Visualization |
US20090017934A1 (en) * | 2007-07-13 | 2009-01-15 | Nike, Inc. | Putters with Enhanced Alignment Visualization |
US7938740B2 (en) | 2005-04-21 | 2011-05-10 | Cobra Golf, Inc. | Golf club head |
US7980964B2 (en) | 2005-04-21 | 2011-07-19 | Cobra Golf, Inc. | Golf club head with concave insert |
US8216087B2 (en) | 2005-04-21 | 2012-07-10 | Cobra Gold Incorporated | Golf club head |
US8303433B2 (en) | 2005-04-21 | 2012-11-06 | Cobra Golf Incorporated | Golf club head with moveable insert |
US8485920B2 (en) | 2005-07-13 | 2013-07-16 | Cobra Golf Incorporated | Metal wood golf club head |
US8523705B2 (en) | 2005-04-21 | 2013-09-03 | Cobra Golf Incorporated | Golf club head |
US8938871B2 (en) | 2005-04-21 | 2015-01-27 | Cobra Golf Incorporated | Golf club head with high specific-gravity materials |
US9393471B2 (en) | 2005-04-21 | 2016-07-19 | Cobra Golf Incorporated | Golf club head with removable component |
US9421438B2 (en) | 2005-04-21 | 2016-08-23 | Cobra Golf Incorporated | Golf club head with accessible interior |
US9440123B2 (en) | 2005-04-21 | 2016-09-13 | Cobra Golf Incorporated | Golf club head with accessible interior |
US9504889B2 (en) | 2005-04-21 | 2016-11-29 | Cobra Golf Incorporated | Golf club with multi-component construction |
US11344773B2 (en) * | 2020-02-13 | 2022-05-31 | Sumitomo Rubber Industries, Ltd. | Golf club head and method for manufacturing same |
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US7258625B2 (en) | 2004-09-08 | 2007-08-21 | Nike, Inc. | Golf clubs and golf club heads |
WO2006033140A1 (en) * | 2004-09-22 | 2006-03-30 | The Yokohama Rubber Co.,Ltd. | Process for producing golf club head |
JP2008114080A (en) * | 2006-11-02 | 2008-05-22 | Acushnet Co | Golf club head |
CN101657240B (en) * | 2007-02-07 | 2012-11-07 | A·J·布洛尔斯 | Golf club having a hollow pressurized metal head |
JP5094592B2 (en) * | 2008-06-27 | 2012-12-12 | 三菱レイヨン株式会社 | Golf club head manufacturing apparatus and golf club head manufacturing method |
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US4874171A (en) * | 1986-09-12 | 1989-10-17 | Bridgestone Corporation | Golf club set |
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US20080268980A1 (en) * | 2005-04-21 | 2008-10-30 | Breier Joshua G | Golf club head with concave insert |
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Legal Events
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Owner name: FU SHENG INDUSTRIAL CO., LTD., TAIWAN Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:LEE, HOU-TENG;REEL/FRAME:011758/0495 Effective date: 20010412 |
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