US3873090A - Graphite shaft connection to golf club hosel - Google Patents
Graphite shaft connection to golf club hosel Download PDFInfo
- Publication number
- US3873090A US3873090A US425335A US42533573A US3873090A US 3873090 A US3873090 A US 3873090A US 425335 A US425335 A US 425335A US 42533573 A US42533573 A US 42533573A US 3873090 A US3873090 A US 3873090A
- Authority
- US
- United States
- Prior art keywords
- hosel
- shaft
- pin
- predetermined
- sleeve
- 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.)
- Expired - Lifetime
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-
- 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
- A63B53/02—Joint structures between the head and the shaft
Definitions
- ABSTRACT A tubular graphite containing shaft is connected to a metallic hosel, or the like.
- the hosel contains a bore.
- a pin is received in the hosel and shaft bores. and a sleeve fits over the hose] and shaft to bridge the ends thereof and to extend beyond the end of the pin in the graphite shaft bore typically, the pin and sleeve are bond connected to the hose] and shaft, as via a cured. flexible, bonding agent,
- Graphite filament golf club shafts have recently become favored by golfers due to their extremely light weight characteristics; however, the connection of such shafts to hosels presents the problem of avoiding fracture of the shaft during use of the club.
- the radial compressive strength of a tubular graphite shaft is 'unsatisfactorily low, while bending strength is high.
- the connection should be such as to present a smooth transition between the hosel and shaft. While attempts have been made toovercome these and other problems, none of which I am aware have-incorporated the unusual advantages in structure, mode of operation and results as now'afforded by the present invention.
- the hosel and light weight, graphite containing shaft are formed to extend in end-to-end relation, with a pin received in aligned bores in these elements and connected to the latter; and a sleeve is fitted over the hosel and shaft in bridging relation to the ends thereof, the sleeve connected with these elements and extending endwise beyond the end of the pin received in the shaft bore.
- FIG. 1 is an elevation showing a golf club incorporat ing the invention
- FIG. 2 is a section on lines 2--2 of FIG. 1.
- An implement asfor example a golf club, incorporating the invention includes a hosel or the like and a tubular shaft to be connected with the hosel, the shaft containing graphite fibers and resin.
- Other representative implements include tennis rackets, badminton rackets, etc.
- the representative golf club shown in the drawings includes a steel hosel 11 and a graphite filament shaft 12, which is normally tubular.
- the club also includes a handle 13 and a club head 14.
- An elongated pin 18 is received in the two bores, the pin preferably consisting of a lightweight metal (of specific gravity less than steel), as for example high tensile strength aluminum or aluminum alloy. Note that about one-half the pin length extends in bore 16 and about one-half the pin length extends in bore 17, for best results; further, the pin end 18a engages the inner end wall 16a of bore 16. Note that the pin is connected with the hosel and shaft, and preferably a bonding agent indicated at 1% and 19b accomplishes such connection along the pin length. More specifically, the bonding agent substantially fills the slight annular or near annular clearances between the pin and the walls of bore 16 and .17, the agent preferably consisting of a flexible epoxide cured in situ.
- a flexible epoxide is known in the trade as high strength, flexible 3M structural adhesive mix: three parts No. 2216A mixed with two parts No. 22168, products of the 3M Company.
- the bonding agent will flex with the shaft minimized, and radial deflections of the graphite shaft,
- a flexible bonding agent 22a and 22b cured in situ in the clearance betweenthe pin and the shaft andhosel peripheries, serves to interconnect these elements, and to accommodate their flexing without deterioration of the bond.
- the sleeve end 24 terminates proximate hosel step shoulder 25, and the sleeve and hosel provide an exteriorly smooth transition at 26; for example these elements may have the same external diameter.
- Sleeve 20 may consist of high carbon chrome plated steel.
- an identifying plastic (or other material) ring 28 may be inserted between sleeve end 24 and hosel step shoulder 25, as shown.
- said shaft being tubular and made from graphite fibers 3 termined distance
- said connecting means including a uniform diameter solid pin closely received in and adhesively bonded to the hosel bore wall, said pin occupying substantially the entire length of said bore andaextending outwardly beyond said end surface a distance approximately equal to said predetermined distance, said shaft being positioned over and adhesively bonded to substantially the entire exposed pin portion and in end-to-end relation to said hosel at said end surface, the outer surface of said shaft being aligned with said second predetermined outer diameter hosel portion, said connecting means further including a sleeve telescopically received over and adhesively bonded to the shaft and second predetermined distance hosel portion, said sleeve extending endwise beyond both ends of said pin, the hosel end of said sleeve terminating adjacent said hosel step shoulder, the outer surface of said sleeve being aligned with said first predetermined outer diameter hosel portion.
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- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Physical Education & Sports Medicine (AREA)
- Golf Clubs (AREA)
Abstract
A tubular graphite containing shaft is connected to a metallic hosel, or the like. The hosel contains a bore, a pin is received in the hosel and shaft bores, and a sleeve fits over the hosel and shaft to bridge the ends thereof and to extend beyond the end of the pin in the graphite shaft bore typically, the pin and sleeve are bond connected to the hosel and shaft, as via a cured, flexible, bonding agent.
Description
United States Patent 11 1 Thompson 1 1 Mar. 25, 1975 1 GRAPHITE SHAFT CONNECTION TO GOLF CLUB HOSEL [76] lnvcntorz Stanley C. Thompson, 7851 Talbert St,, Apt. 1, Playa Del Rey, Calif. 90271 [22] Filed: Dec. 17, 1973' [21] Appl, No.: 425,335
[521 U.S. C1 273/80.8, 273/803, 273/804, 273/805 [51] Int. Cl A631) 53/02 Field of Search 273/77 R, 80 R, 80 C,
273/80.280.8. 167-175, 80.1. 81.2, 273/67 R,73 R,73.l
3,176,987 4/1965 Johnston 273/805 X 3,389,046 6/1968 Burress 273/808 X 3,516,697 6/1970 Hahn 273/80 R X 3,529,826 9/1970 Hulyk 273/802 X 3,661,388 5/1972 Leslie 273/802 FOREIGN PATENTS OR APPLICATIONS 4,326 2/1911 United Kingdom 273/808 287,303 3/1928 United Kingdom 273/805 OTHER PUBLICATIONS Golf World"; Feb. 16, 1973', page 27,
Primary Examiner- Richard J. Apley Attorney, Agent, or Firm William W. H aefliger [57] ABSTRACT A tubular graphite containing shaft is connected to a metallic hosel, or the like. The hosel contains a bore. a pin is received in the hosel and shaft bores. and a sleeve fits over the hose] and shaft to bridge the ends thereof and to extend beyond the end of the pin in the graphite shaft bore typically, the pin and sleeve are bond connected to the hose] and shaft, as via a cured. flexible, bonding agent,
6 Claims, 2 Drawing Figures GRAPHITE SHAFT CONNECTION TO GOLF CLUB HOSEL BACKGROUND OF THE INVENTION This invention relates generally to the connection of 5 implement shafts and heads, wheretheshafts contain substantial amounts of graphite; more particularly, it concerns the connection of graphite golf club shafts to hosels.
Graphite filament golf club shafts have recently become favored by golfers due to their extremely light weight characteristics; however, the connection of such shafts to hosels presents the problem of avoiding fracture of the shaft during use of the club. In this regard, the radial compressive strength of a tubular graphite shaft is 'unsatisfactorily low, while bending strength is high. Also, the connection should be such as to present a smooth transition between the hosel and shaft. While attempts have been made toovercome these and other problems, none of which I am aware have-incorporated the unusual advantages in structure, mode of operation and results as now'afforded by the present invention.
SUMMARY OF THE INVENTION It is a major object of the invention to provide solutions to the above problems, as well as to provide a connection between an implement head and shaft, as described, and incorporating the unusual advantages as will appear. Basically, and in accordance with the invention, the hosel and light weight, graphite containing shaft are formed to extend in end-to-end relation, with a pin received in aligned bores in these elements and connected to the latter; and a sleeve is fitted over the hosel and shaft in bridging relation to the ends thereof, the sleeve connected with these elements and extending endwise beyond the end of the pin received in the shaft bore. Asa result, the shaft is strengthened at its locus of connection to the hosel, and in such manner that despite its relatively low radial compressive strength the shaft will not fracture at such locus during DRAWING DESCRIPTION FIG. 1 is an elevation showing a golf club incorporat ing the invention;
FIG. 2 is a section on lines 2--2 of FIG. 1.
DETAILED DESCRIPTION An implement, asfor example a golf club, incorporating the invention includes a hosel or the like and a tubular shaft to be connected with the hosel, the shaft containing graphite fibers and resin. Other representative implements include tennis rackets, badminton rackets, etc. The representative golf club shown in the drawings includes a steel hosel 11 and a graphite filament shaft 12, which is normally tubular. Merely as illustrative, the club also includes a handle 13 and a club head 14.
Extending the description to FIG. 2, the hosel and shaftexte nd in end-toend relation at interface 15, the hosel havingan end bore 16 in alignment with shaft bore 17. The diameters of both bores are preferably equal.
An elongated pin 18 is received in the two bores, the pin preferably consisting ofa lightweight metal (of specific gravity less than steel), as for example high tensile strength aluminum or aluminum alloy. Note that about one-half the pin length extends in bore 16 and about one-half the pin length extends in bore 17, for best results; further, the pin end 18a engages the inner end wall 16a of bore 16. Note that the pin is connected with the hosel and shaft, and preferably a bonding agent indicated at 1% and 19b accomplishes such connection along the pin length. More specifically, the bonding agent substantially fills the slight annular or near annular clearances between the pin and the walls of bore 16 and .17, the agent preferably consisting of a flexible epoxide cured in situ. One such epoxide is known in the trade as high strength, flexible 3M structural adhesive mix: three parts No. 2216A mixed with two parts No. 22168, products of the 3M Company.
As a result, the bonding agent will flex with the shaft minimized, and radial deflections of the graphite shaft,
particularly proximate the end of the pin and the end of the shaft, are contained by the sleeve. A flexible bonding agent 22a and 22b, cured in situ in the clearance betweenthe pin and the shaft andhosel peripheries, serves to interconnect these elements, and to accommodate their flexing without deterioration of the bond. Also, the sleeve end 24 terminates proximate hosel step shoulder 25, and the sleeve and hosel provide an exteriorly smooth transition at 26; for example these elements may have the same external diameter. Sleeve 20 may consist of high carbon chrome plated steel.
If desired, an identifying plastic (or other material) ring 28 may be inserted between sleeve end 24 and hosel step shoulder 25, as shown.
I claim: I 1. In a sports implement having a shaft, hosel, an meansconnecting said shaft to said hosel, comprising:
said shaft being tubular and made from graphite fibers 3 termined distance, said connecting means including a uniform diameter solid pin closely received in and adhesively bonded to the hosel bore wall, said pin occupying substantially the entire length of said bore andaextending outwardly beyond said end surface a distance approximately equal to said predetermined distance, said shaft being positioned over and adhesively bonded to substantially the entire exposed pin portion and in end-to-end relation to said hosel at said end surface, the outer surface of said shaft being aligned with said second predetermined outer diameter hosel portion, said connecting means further including a sleeve telescopically received over and adhesively bonded to the shaft and second predetermined distance hosel portion, said sleeve extending endwise beyond both ends of said pin, the hosel end of said sleeve terminating adjacent said hosel step shoulder, the outer surface of said sleeve being aligned with said first predetermined outer diameter hosel portion.
2. The combination of claim 1 wherein the adhesive bond material consists of a cured, flexible epoxide.
3. The combination of claim 1 wherein said pin consists of a metal having a specific gravity substantially less than that of steel.
4. The combination of claim 3 wherein said pin metal consists of aluminum.
5. The combination of claim 1 wherein the sports implement comprises a golf club.
6. The combination of claim 1 including an identifying ring inserted between the hosel end of said sleeve and said hosel step shoulder, the outer surface of said ring being aligned with said outer surface of said sleeve and said first predetermined outer diameter hosel portlOrl.
Claims (6)
1. In a sports implement having a shaft, hosel, and means connecting said shaft to said hosel, comprising: said shaft being tubular and made from graphite fibers and resin, said hosel extending from the head of the sports implement for a predetermined first distance and a predetermined first outer diameter, a hosel step shoulder formed at the end of said predetermined first distance, said hosel extending from said shoulder a second predetermined distance and a second predetermined outer diameter less than said first outer diameter and terminating in an end surface, a bore formed in said second predetermined distance hosel portion and extending from said end surface inwardly thereinto to a predetermined distance less than said second predetermined distance, said Connecting means including a uniform diameter solid pin closely received in and adhesively bonded to the hosel bore wall, said pin occupying substantially the entire length of said bore and extending outwardly beyond said end surface a distance approximately equal to said predetermined distance, said shaft being positioned over and adhesively bonded to substantially the entire exposed pin portion and in end-to-end relation to said hosel at said end surface, the outer surface of said shaft being aligned with said second predetermined outer diameter hosel portion, said connecting means further including a sleeve telescopically received over and adhesively bonded to the shaft and second predetermined distance hosel portion, said sleeve extending endwise beyond both ends of said pin, the hosel end of said sleeve terminating adjacent said hosel step shoulder, the outer surface of said sleeve being aligned with said first predetermined outer diameter hosel portion.
2. The combination of claim 1 wherein the adhesive bond material consists of a cured, flexible epoxide.
3. The combination of claim 1 wherein said pin consists of a metal having a specific gravity substantially less than that of steel.
4. The combination of claim 3 wherein said pin metal consists of aluminum.
5. The combination of claim 1 wherein the sports implement comprises a golf club.
6. The combination of claim 1 including an identifying ring inserted between the hosel end of said sleeve and said hosel step shoulder, the outer surface of said ring being aligned with said outer surface of said sleeve and said first predetermined outer diameter hosel portion.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US425335A US3873090A (en) | 1973-12-17 | 1973-12-17 | Graphite shaft connection to golf club hosel |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US425335A US3873090A (en) | 1973-12-17 | 1973-12-17 | Graphite shaft connection to golf club hosel |
Publications (1)
Publication Number | Publication Date |
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US3873090A true US3873090A (en) | 1975-03-25 |
Family
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US425335A Expired - Lifetime US3873090A (en) | 1973-12-17 | 1973-12-17 | Graphite shaft connection to golf club hosel |
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Cited By (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3999757A (en) * | 1974-07-25 | 1976-12-28 | Norstrong Plastics Limited | Golf clubs |
US4756534A (en) * | 1985-01-14 | 1988-07-12 | Thompson Stanley C | Golf club |
US4954198A (en) * | 1985-04-19 | 1990-09-04 | Viellard Paul H | Method of fabricating golf clubs and assembly of tubes for forming clubs obtained by the method |
US4991843A (en) * | 1988-04-08 | 1991-02-12 | Maruman Golf Co., Ltd. | Golf club with a plastic head |
FR2669233A1 (en) * | 1990-10-17 | 1992-05-22 | Lo Kun Nan | Improved construction for golf club |
US5253867A (en) * | 1989-09-27 | 1993-10-19 | Gafner Donald M | Multi-component shaft for golf clubs |
US5273280A (en) * | 1990-08-27 | 1993-12-28 | Lo Kun Nan | Golf club construction |
US5454563A (en) * | 1993-07-13 | 1995-10-03 | Yamaha Corp. | Golf club |
US5538246A (en) * | 1994-08-04 | 1996-07-23 | Daiwa Seiko, Inc. | Golf club |
US5573344A (en) * | 1994-10-17 | 1996-11-12 | The United States Of America As Represented By The Secretary Of The Navy | High damping composite joint for mechanical vibration and acoustic energy dissipation |
US5766089A (en) * | 1994-08-04 | 1998-06-16 | Daiwa Seiko, Inc. | Golf club |
US6203447B1 (en) | 1999-12-07 | 2001-03-20 | True Temper Sports, Inc. | Bonding apparatus for modular shafts |
US20040116199A1 (en) * | 2002-08-14 | 2004-06-17 | Chapel Golf, Inc. | Golf club and methods of manufacture |
US7037211B1 (en) * | 1999-08-10 | 2006-05-02 | Chapel Golf, Inc. | Golf club |
US20060128500A1 (en) * | 2004-12-14 | 2006-06-15 | Nike, Inc. | Golf club head or other ball striking device with discrete regions of different density |
US7128659B1 (en) * | 2003-10-17 | 2006-10-31 | Ming-Hsien Lee | Golf club shaft made of fiber composite material and metal material |
US11148016B2 (en) | 2017-02-28 | 2021-10-19 | Fujikura Composites Inc. | Golf club and combining member of golf club shaft and golf club head |
US11253754B2 (en) * | 2017-06-14 | 2022-02-22 | Fujikura Composites, Inc. | Golf club and connecting member for golf club shaft and golf club head |
Citations (13)
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US264243A (en) * | 1882-09-12 | Ferrule for fishing-rods | ||
US1582836A (en) * | 1925-07-17 | 1926-04-27 | Thos E Wilson & Co | Metallic golf-club head |
US1652594A (en) * | 1925-11-10 | 1927-12-13 | Walker Robert James | Golf club |
US1946007A (en) * | 1931-10-27 | 1934-02-06 | Samuel E Watson | Golf club |
US2463053A (en) * | 1943-08-19 | 1949-03-01 | Pritchard Frank | Golf club construction |
US2478554A (en) * | 1946-10-11 | 1949-08-09 | American Ford And Hoe Company | Golf club |
US2699182A (en) * | 1951-10-30 | 1955-01-11 | Goodrich Co B F | Mandrel for building smooth-bore hose |
US3170691A (en) * | 1962-07-23 | 1965-02-23 | Frank C Pritchard | Golf club shaft and hosel connector |
US3176987A (en) * | 1962-09-27 | 1965-04-06 | Frank L Johnston | Golf club including means for aligning the shaft, hosel and striking face |
US3389046A (en) * | 1964-03-30 | 1968-06-18 | Robert M. Burress | Tubular repair joint and insert used therein |
US3516697A (en) * | 1969-02-20 | 1970-06-23 | Raymar Inc | Connector for tubular members |
US3529826A (en) * | 1967-08-03 | 1970-09-22 | Myron Hulyk | Golf club with twin shafts |
US3661388A (en) * | 1969-10-29 | 1972-05-09 | True Temper Corp | Striking implement and head assembly therefor |
-
1973
- 1973-12-17 US US425335A patent/US3873090A/en not_active Expired - Lifetime
Patent Citations (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US264243A (en) * | 1882-09-12 | Ferrule for fishing-rods | ||
US1582836A (en) * | 1925-07-17 | 1926-04-27 | Thos E Wilson & Co | Metallic golf-club head |
US1652594A (en) * | 1925-11-10 | 1927-12-13 | Walker Robert James | Golf club |
US1946007A (en) * | 1931-10-27 | 1934-02-06 | Samuel E Watson | Golf club |
US2463053A (en) * | 1943-08-19 | 1949-03-01 | Pritchard Frank | Golf club construction |
US2478554A (en) * | 1946-10-11 | 1949-08-09 | American Ford And Hoe Company | Golf club |
US2699182A (en) * | 1951-10-30 | 1955-01-11 | Goodrich Co B F | Mandrel for building smooth-bore hose |
US3170691A (en) * | 1962-07-23 | 1965-02-23 | Frank C Pritchard | Golf club shaft and hosel connector |
US3176987A (en) * | 1962-09-27 | 1965-04-06 | Frank L Johnston | Golf club including means for aligning the shaft, hosel and striking face |
US3389046A (en) * | 1964-03-30 | 1968-06-18 | Robert M. Burress | Tubular repair joint and insert used therein |
US3529826A (en) * | 1967-08-03 | 1970-09-22 | Myron Hulyk | Golf club with twin shafts |
US3516697A (en) * | 1969-02-20 | 1970-06-23 | Raymar Inc | Connector for tubular members |
US3661388A (en) * | 1969-10-29 | 1972-05-09 | True Temper Corp | Striking implement and head assembly therefor |
Cited By (25)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3999757A (en) * | 1974-07-25 | 1976-12-28 | Norstrong Plastics Limited | Golf clubs |
US4756534A (en) * | 1985-01-14 | 1988-07-12 | Thompson Stanley C | Golf club |
US4954198A (en) * | 1985-04-19 | 1990-09-04 | Viellard Paul H | Method of fabricating golf clubs and assembly of tubes for forming clubs obtained by the method |
US4991843A (en) * | 1988-04-08 | 1991-02-12 | Maruman Golf Co., Ltd. | Golf club with a plastic head |
US5253867A (en) * | 1989-09-27 | 1993-10-19 | Gafner Donald M | Multi-component shaft for golf clubs |
US5273280A (en) * | 1990-08-27 | 1993-12-28 | Lo Kun Nan | Golf club construction |
BE1004640A3 (en) * | 1990-10-17 | 1993-01-05 | Lo Kun Nan | Construction for improved golf club. |
FR2669233A1 (en) * | 1990-10-17 | 1992-05-22 | Lo Kun Nan | Improved construction for golf club |
US5454563A (en) * | 1993-07-13 | 1995-10-03 | Yamaha Corp. | Golf club |
US5538246A (en) * | 1994-08-04 | 1996-07-23 | Daiwa Seiko, Inc. | Golf club |
US5766089A (en) * | 1994-08-04 | 1998-06-16 | Daiwa Seiko, Inc. | Golf club |
US5573344A (en) * | 1994-10-17 | 1996-11-12 | The United States Of America As Represented By The Secretary Of The Navy | High damping composite joint for mechanical vibration and acoustic energy dissipation |
US7037211B1 (en) * | 1999-08-10 | 2006-05-02 | Chapel Golf, Inc. | Golf club |
US6203447B1 (en) | 1999-12-07 | 2001-03-20 | True Temper Sports, Inc. | Bonding apparatus for modular shafts |
US6860820B2 (en) | 2002-08-14 | 2005-03-01 | Chapel Golf, Inc. | Golf club and methods of manufacture |
US20040116199A1 (en) * | 2002-08-14 | 2004-06-17 | Chapel Golf, Inc. | Golf club and methods of manufacture |
US7128659B1 (en) * | 2003-10-17 | 2006-10-31 | Ming-Hsien Lee | Golf club shaft made of fiber composite material and metal material |
US20060128500A1 (en) * | 2004-12-14 | 2006-06-15 | Nike, Inc. | Golf club head or other ball striking device with discrete regions of different density |
US7229362B2 (en) * | 2004-12-14 | 2007-06-12 | Nike, Inc. | Golf club head or other ball striking device with discrete regions of different density |
US20070232407A1 (en) * | 2004-12-14 | 2007-10-04 | Nike, Inc. | Golf club head or other ball striking device with discrete regions of different density |
US7481720B2 (en) | 2004-12-14 | 2009-01-27 | Nike, Inc. | Golf club head or other ball striking device with discrete regions of different density |
US20090131195A1 (en) * | 2004-12-14 | 2009-05-21 | Nike, Inc. | Golf club head or other ball striking device with discrete regions of different density |
US7628713B2 (en) | 2004-12-14 | 2009-12-08 | Nike, Inc. | Golf club head or other ball striking device with discrete regions of different density |
US11148016B2 (en) | 2017-02-28 | 2021-10-19 | Fujikura Composites Inc. | Golf club and combining member of golf club shaft and golf club head |
US11253754B2 (en) * | 2017-06-14 | 2022-02-22 | Fujikura Composites, Inc. | Golf club and connecting member for golf club shaft and golf club head |
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Legal Events
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AS | Assignment |
Owner name: CALLAWAY GOLF COMPANY, CALIFORNIA Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:THOMPSON, STANLEY CARL;REEL/FRAME:007696/0746 Effective date: 19950523 |