WO2002011825A2 - Golf club shaft - Google Patents
Golf club shaft Download PDFInfo
- Publication number
- WO2002011825A2 WO2002011825A2 PCT/JP2001/006881 JP0106881W WO0211825A2 WO 2002011825 A2 WO2002011825 A2 WO 2002011825A2 JP 0106881 W JP0106881 W JP 0106881W WO 0211825 A2 WO0211825 A2 WO 0211825A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- shaft
- golf club
- cutting
- scale
- shaft rod
- Prior art date
Links
Classifications
-
- 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
- A63B53/10—Non-metallic shafts
-
- 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
-
- 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
- A63B53/12—Metallic shafts
-
- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B60/00—Details or accessories of golf clubs, bats, rackets or the like
-
- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B60/00—Details or accessories of golf clubs, bats, rackets or the like
- A63B60/54—Details or accessories of golf clubs, bats, rackets or the like with means for damping vibrations
Definitions
- the present invention generally relates to a golf club shaft. More particularly, the present invention relates to a method for preparing a golf club shaft out of a shaft rod utilizing a marking or markings provided on the shaft rod, which provide processing information as well as property information.
- a conventional golf club 100 is typically comprised of an elongated shaft 10, a club head 40 integrally having a hosel 60, a socket member 50 and a grip member 70.
- the hosel 60 receives a tip end portion of the shaft 10 and integrally secures the club head 40 thereto with an adhesive.
- the length of the tip end portion of the shaft 10 to be inserted into the hosel 60 is typically predetermined according to desired properties for the shaft 10.
- the socket member 50 is securely mounted on a preset portion 0 f the shaft 10 and functions to control the length of insertion of the shaft tip portion into the hosel 60. Typically, such control is important to effectively retain the adhesion between the tip portion and the hosel 60.
- the socket member 50 additionally functions to partially absorb physical energy or shock that a basal portion of the head
- the hosel portion accidentally receives in use and will protect the golf club 100 from damages such as breaking or cracking in the vicinity of the socket member 50.
- an optimum shaft rod is selected.
- the shaft rod is cut at a first distance from its tip and/or at a second distance from its butt to provide a club shaft 10 having a designed length for the designed properties of the shaft 10.
- Such clearance may be provided by grinding or abrading the surfaces of the inserted portion of the sha t 10 and the hosel 60 with appropriate grinding or abrading means.
- both surfaces are typically washed and thoroughly cleaned.
- the inserted portion of the shaft 10 is securely integrated with the hosel 60 with a powerful glue or adhesive.
- a grip member 70 is mounted on a grip portion of the shaft 10 and secured thereon to provide a grip of a golf club 100.
- cutting information is provided directly on a shaft rod.
- the cutting information may be a marking provided in a tip portion and/or butt portion of the shaft rod. Such information is provided by letters, marks or colors . Other types of indications or a blend of a variety of indications may be utilized as well .
- the shaft rod having such information or a marking is typically cut according to separately provided cutting instructions that instruct workers where on the marking to cut the shaft rod.
- a golf club comprising or incorporating a shaft prepared or cut in accordance with the present invention provides properties such as flex, torque, stiffness, weight, etc. to the golf club practically exactly as desired or designed. Information about the length of the shaft in the golf club may additionally be provided.
- Such markings provide information where the shaft rod has been cut even after a club head and a grip member have been mounted on the shaft and no traces of cut sections are in view. Golfers looking for a golf club with particular properties can easily find one that exactly satisfies their desires . Such markings can also provide information about the limitation to the distance that can be cut off from a shaft rod. A tip portion of a shaft rod is provided uniformly without tapering. Therefore, if a shaft rod is cut at an excessively long distance from its tip, the shaft is very likely tapered there. A tapered portion would not be safely secured in a hosel . Such excessive cutting would invite deterioration to the performance of golf clubs as well .
- a butt end portion of a shaft rod should not be freely cut off, either. Excessive cutting-off might lead to accidental breaking of the adhesion between a grip portion of the shaft and a grip member, for there would be created excessive gap between the grip portion and the grip member since the grip portion there would be “too” thin for the "typically mass-produced” grip member .
- markings may automatically be provided at the time of manufacturing shaft rods, no extra manual marking work is required, greatly saving on labor and processing time.
- FIG.1 (a) schematically shows a shaft rod to be cut according to the present invention
- FIG.1(b) schematically shows a tip end portion of a shaft rod having cutting information thereon according to an embodiment of the present invention
- FIG.1(c) schematically shows a butt end portion of a shaft rod having cutting information thereon according to an embodiment of the present invention
- FIG.1(d) schematically shows a butt end portion of a shaft roc j having cutting information thereon according to another embodiment of the present invention
- FIG.2 schematically shows a club head into which a tip portion of a shaft having cutting information thereon is inserted according to an embodiment of the present invention
- FIG.3 schematically shows a club head into which a tip portion of a shaft having cutting information is inserted after a larger cut-off;
- FIG.4 schematically shows a club head into which a tip portion of a shaft having cutting information is inserted after a larger cut-off
- FIG.5 schematically shows a typical golf club
- FIG.6 (a) is a table of instructions forming part of the present invention in an embodiment, according to which workers are instructed where to cut shaft rods and golfers can know properties of golf clubs;
- FIG.6 (b) is another table of instructions .
- a shaft rod to be a shaft 1 after going through a cutting step. It is noted that in exceptional cases, it is possible for a shaft rod to be a shaft 1 without going through any cutting steps .
- An encircled tip end portion 2 provided in the vicinity of the tip of the shaft 1 or rod is to be inserted into a hosel of a head.
- An encircled butt end portion 3 provided in the vicinity of the butt of the shaft 1 or rod is to provide a grip of a golf club.
- Fig.l (b) is shown an enlarged tip end portion 2 on which cutting information or a marking M in a form of scale S is provided according to an embodiment of the present invention.
- the scale S in this embodiment is divided or calibrated at 5mm intervals.
- Such scale S may be divided at other intervals such as 10mm intervals, or l-13mm intervals .
- the scale S is divided at 1/2 inch intervals. In yet another alternative embodiment, the scale S is divided at 1/4 intervals.
- the scale S may be provided in other inch units as well .
- Fig.1 (c) is shown an enlarged butt end portion 3 on which cutting information or a marking M in a form of scale S is provided according to an embodiment of the present invention .
- the scale S in this embodiment is divided at 5mm intervals. Such scale S may be divided at other intervals such as 10mm intervals, or l-13mm intervals .
- the scale S is provided in inch with 1/2 inch intervals. In yet another alternative embodiment, the scale S is divided at 1/4 intervals. Such scale S may be provided in other inch units as well .
- Fig.1 (d) is shown an enlarged butt end portion 3 on which cutting information or a marking M in a form of scale S is provided according to an embodiment of the present invention.
- the scale S in this embodiment is calibrated at 5mm intervals.
- Such scale S may be calibrated at other intervals such as 10mm intervals, or 1-13mm intervals .
- the scale S of this embodiment is further provided with numbers indicating distances in millimeter from the butt of the rod in order to facilitate efficient cutting operation and provide golfers with easily noticeable information where cutting has been done.
- the numbers may be replaced by other letter or mark indications .
- the scale S is divided at 1/2 inch intervals. In yet another alternative embodiment, the scale S is divided at 1/4 inch intervals.
- the scale S may be provided in other inch units as well .
- the markings of the present invention may be provided on golf clubs such that the markings are not viewed by players who are addressing a ball using the golf clubs.
- the cutting instructions provide lengths to be cut off from tip ends or butt ends of shaft rods , or both.
- the predetermined lengths or distances from the ends of shaft rods can be readily and precisely located on the scales S. Workers simply cut the shaft rods according to the instructions.
- Golfers may be provided with information including tables such as shown in Fig.6 (a) or Fig.6(b) as an example, and can be provided with particular properties of individual golf clubs from the markings M.
- Fig.2 is shown an embodiment of utilization of the present invention, where a head 4 having a hosel 6 is mounted securely on a tip end portion of a shaft 1 , and a socket member 5 having a height about 10mm is also mounted securely on the shaft 1 , the lower face of the socket member 5 contacting the upper end face of the head 4.
- the tip end portion is provided with a marking M comprising scale S according to the present invention.
- the original marking M is 80mm long in this embodiment, which may be indicated on the shaft or taught otherwise. Other original lengths can equally be utilized.
- the scale S in this embodiment is calibrated at 5mm intervals, of which 10mm intervals are indicated with longer lines .
- a measured length has been cut off from a tip end portion of the shaft rod in accordance with cutting instructions .
- a socket member 5 is heated to expand, and is placed on an appropriate location of a shaft 1. As the socket member 5 is cooled, the socket member 5 is squeezed on the shaft 1 and gets tightened on the shaft 1. The tightened socket member 5 controls the depth of insertion of the shaft tip portion into a hosel 6. In another embodiment, a socket member 5 is adhered to the shaft 1 with an adhesive.
- the exposed portion of the scale S in this example 40mm, indicates or teaches viewers the length of the cut-off portion (0mm in this embodiment) and provides other information in relation to the cut.
- An example of properties of a golf club shaft in relation to the lengths of cut-off portions is provided in the table of Fig.6 (a), which is to be described in detail later .
- a zone beyond a "safe" distance from the tip or butt of a shaft rod or a “dangerous” zone is indicated on the marking M in warning color such as red. Other colors may equally be utilized.
- Fig.3 is shown another embodiment of the present invention.
- a longer distance (20mm) has been cut off from the tip of a shaft rod, providing slightly different properties from the foregoing embodiment.
- Fig.4 is shown still another embodiment of the present invention.
- a maximum length (40mm) for this particular embodiment has been cut off from the shaft rod, providing still different properties.
- the “diameter (shaft tip)" in the table is the diameter as measured at the shaft portion which is to contact the upper end of the socket member 5 after a cut-off.
- the shaft rod portion up to 80mm from the tip end of the shaft rod is provided in an identical diameter all through. Past the 80mm portion, the shaft rod gradually becomes thicker.
- the table shows that the diameter of the shaft measured at the socket member contacting portion is equal in diameter at 8.65mm up to 40mm of the "cut length" as the first 40mm tip end portion of the shaft rod is to be inserted into the hosel 60 of the head 4 and the socket member 5.
- the hosel 60 is about 30mm deep and the socket member 5 is about 10mm tall in this embodiment. This shaft starts changing its thickness at a distance around 50mm from the tip end.
- the hosel 60 is to receive a tapered portion, at least partially, which will not provide a very secure integration between the hosel 60 and the shaft portion.
- Fig.6(b) provides another table. In this table all lengths are provided in inch, and the diameter at the butt of this particular shaft rod is 0.614 inch.
- shafts with different diameters will provide different properties. Materials of shafts will greatly affect properties as well . Other physical properties of shafts would also affect properties of golf clubs. Sizes and/or weights of club heads also affect properties of golf clubs .
Landscapes
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Physical Education & Sports Medicine (AREA)
- Golf Clubs (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP01956828A EP1309377A2 (en) | 2000-08-09 | 2001-08-09 | Golf club shaft |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2000-240832 | 2000-08-09 | ||
JP2000240832 | 2000-08-09 | ||
US09/896,334 | 2001-06-29 | ||
US09/896,334 US20020025857A1 (en) | 2000-08-09 | 2001-06-29 | Golf club shaft |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2002011825A2 true WO2002011825A2 (en) | 2002-02-14 |
WO2002011825A3 WO2002011825A3 (en) | 2002-06-06 |
Family
ID=26597609
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2001/006881 WO2002011825A2 (en) | 2000-08-09 | 2001-08-09 | Golf club shaft |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP1309377A2 (en) |
TW (1) | TW504396B (en) |
WO (1) | WO2002011825A2 (en) |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3963236A (en) * | 1970-08-24 | 1976-06-15 | Mann Robert S | Golf club set and method of making |
US4122593A (en) * | 1977-05-12 | 1978-10-31 | Con-Sole Golf Corporation | Method of making golf club shafts |
US4240631A (en) * | 1977-06-25 | 1980-12-23 | Macdougall Ian C | Shaft assemblies for golf clubs |
US4455022A (en) * | 1981-11-09 | 1984-06-19 | Don Wright Golf Company | Master shaft and method of making golf club shafts therefrom |
US4889575A (en) * | 1986-06-06 | 1989-12-26 | Fiber-Speed International, Inc. | Method of manufacturing golf club shafts |
US5492042A (en) * | 1993-12-14 | 1996-02-20 | Salvia; Matthew | Adjustable workpiece holder for shaft cutting |
US5944616A (en) * | 1997-01-18 | 1999-08-31 | Apollo Sports Holdings Ltd. | Golf clubs |
-
2001
- 2001-08-01 TW TW090118813A patent/TW504396B/en not_active IP Right Cessation
- 2001-08-09 EP EP01956828A patent/EP1309377A2/en not_active Withdrawn
- 2001-08-09 WO PCT/JP2001/006881 patent/WO2002011825A2/en not_active Application Discontinuation
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3963236A (en) * | 1970-08-24 | 1976-06-15 | Mann Robert S | Golf club set and method of making |
US4122593A (en) * | 1977-05-12 | 1978-10-31 | Con-Sole Golf Corporation | Method of making golf club shafts |
US4240631A (en) * | 1977-06-25 | 1980-12-23 | Macdougall Ian C | Shaft assemblies for golf clubs |
US4455022A (en) * | 1981-11-09 | 1984-06-19 | Don Wright Golf Company | Master shaft and method of making golf club shafts therefrom |
US4889575A (en) * | 1986-06-06 | 1989-12-26 | Fiber-Speed International, Inc. | Method of manufacturing golf club shafts |
US5492042A (en) * | 1993-12-14 | 1996-02-20 | Salvia; Matthew | Adjustable workpiece holder for shaft cutting |
US5944616A (en) * | 1997-01-18 | 1999-08-31 | Apollo Sports Holdings Ltd. | Golf clubs |
Also Published As
Publication number | Publication date |
---|---|
WO2002011825A3 (en) | 2002-06-06 |
EP1309377A2 (en) | 2003-05-14 |
TW504396B (en) | 2002-10-01 |
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