US20050096151A1 - Combination of a golf club head and a weight member - Google Patents

Combination of a golf club head and a weight member Download PDF

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Publication number
US20050096151A1
US20050096151A1 US10/695,778 US69577803A US2005096151A1 US 20050096151 A1 US20050096151 A1 US 20050096151A1 US 69577803 A US69577803 A US 69577803A US 2005096151 A1 US2005096151 A1 US 2005096151A1
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US
United States
Prior art keywords
club head
golf club
weight member
recess
combination
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
Application number
US10/695,778
Inventor
Wen-Ching Hou
Chan-Tung Chen
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nelson Precision Casting Co Ltd
Original Assignee
Nelson Precision Casting Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority to JP2003367352A priority Critical patent/JP2005130911A/en
Application filed by Nelson Precision Casting Co Ltd filed Critical Nelson Precision Casting Co Ltd
Priority to US10/695,778 priority patent/US20050096151A1/en
Assigned to NELSON PRECISION CASTING CO., LTD. reassignment NELSON PRECISION CASTING CO., LTD. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: CHEN, CHAN-TUNG, HOU, WEN-CHING
Publication of US20050096151A1 publication Critical patent/US20050096151A1/en
Application status is Abandoned legal-status Critical

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Classifications

    • AHUMAN NECESSITIES
    • A63SPORTS; GAMES; AMUSEMENTS
    • A63BAPPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B53/00Golf clubs
    • A63B53/04Heads
    • AHUMAN NECESSITIES
    • A63SPORTS; GAMES; AMUSEMENTS
    • A63BAPPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B53/00Golf clubs
    • A63B53/04Heads
    • A63B53/0466Heads wood-type
    • AHUMAN NECESSITIES
    • A63SPORTS; GAMES; AMUSEMENTS
    • A63BAPPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B53/00Golf clubs
    • A63B53/04Heads
    • A63B53/047Heads iron-type
    • AHUMAN NECESSITIES
    • A63SPORTS; GAMES; AMUSEMENTS
    • A63BAPPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B60/00Details or accessories of golf clubs, bats, rackets or the like
    • AHUMAN NECESSITIES
    • A63SPORTS; GAMES; AMUSEMENTS
    • A63BAPPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B53/00Golf clubs
    • A63B53/04Heads
    • A63B2053/0416Heads with an impact surface provided by a face insert
    • AHUMAN NECESSITIES
    • A63SPORTS; GAMES; AMUSEMENTS
    • A63BAPPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B53/00Golf clubs
    • A63B53/04Heads
    • A63B2053/0433Heads with special sole configurations
    • AHUMAN NECESSITIES
    • A63SPORTS; GAMES; AMUSEMENTS
    • A63BAPPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B53/00Golf clubs
    • A63B53/04Heads
    • A63B2053/0491Heads with added weights, e.g. changeable, replaceable
    • AHUMAN NECESSITIES
    • A63SPORTS; GAMES; AMUSEMENTS
    • A63BAPPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B60/00Details or accessories of golf clubs, bats, rackets or the like
    • A63B60/54Details or accessories of golf clubs, bats, rackets or the like with means for damping vibrations

Abstract

A golf club head includes a recession in a sole thereof. A weight member is mounted in a recession of the golf club head for adjusting the center of gravity of the golf club head. A filling material seals the recession and buries/fixes the weight member in the recession. The filling material simplifies the process for mounting the weight member and absorbs vibrations generated as a result of striking a golf ball.

Description

    BACKGROUND OF THE INVENTION
  • 1. Field of the Invention
  • The present invention relates to a combination of a golf club head and a weight member.
  • 2. Description of Related Art
  • FIG. 1 of the drawings is a sectional view of a conventional golf club head, and FIG. 2 is a sectional view of another conventional golf club head. The golf club head 10 is made of a material having a low specific gravity (or relative density) such as a titanium alloy, stainless steel, Fe—Mn—Al alloy, soft iron alloy, or other iron alloy. A weight member 20 is embedded in the golf club head 10 and made of a material having a high specific gravity, such as a W—Fe—Ni alloy or other tungsten alloy. The golf club head 10 includes a recession 11 (FIG. 1) or notch 101 (FIG. 2) into which the weight member 20 is securely fixed by an appropriate means to form a golf club head product with a lower center of gravity while increasing the overall volume of the golf club head, increasing the thickness of the golf club head, and improving the striking effect without changing the overall weight.
  • Nevertheless, when bonding the golf club head 10 and the weight member 20 made of different materials together by welding, heat cracks and poor welding bead solidifying patterns are apt to be generated. Therefore, brazing is usually used in the golf club head industry to bond the golf club head body 10 and the weight member 20 together. Nevertheless, the cost for brazing is high, as brazing includes use of a welding material containing expensive ingredients, such as silver, copper, titanium, nickel, etc. Further, metallographic arrangement and crystalline microstructure are adversely affected, as the golf club head 10 and the brazing material must be heated simultaneously. The overall structural strength and toughness of the golf club head are thus adversely affected. Further, it is difficult to control the amount of the welding material, the engaging relationship between the wall delimiting the recession 11 and the weight member 20, and the force for inserting the weight member 20. Further, a paste that is generally included in the brazing material comprises organic materials that easily volatilize when heated, resulting in outflow of the brazing material, unreliable filling of a gap between the weight member 20 and the wall delimiting the recession 11, generation of voids, and waste of the brazing material. The bonding strength for the weight member 20 by welding is adversely affected, and the operational difficulty of the brazing process is increased.
  • In addition to welding and brazing, the weight member 20 can be engaged with the golf club head 10 by pressing, insertion, or screwing. For example, U.S. Pat. Nos. 6,592,468 and 6,616,547 both disclose use of a bronze plate on which a plurality of weight members are formed. Although this arrangement is simpler than the welding process and the brazing process, surface crack, twist, and deformation are apt to occur to the golf club head, adversely affecting the appearance of the golf club head. Thus, this arrangement is not suitable for a golf club head having a small thickness, such as a golf club head of an XL-size wooden club.
  • OBJECTS OF THE INVENTION
  • An object of the present invention is to provide a combination of a golf club head and a weight member, wherein a filling material is used for fixing the weight member in the golf club head, providing a rapid and simplified process for mounting the weighting member into the golf club head.
  • Another object of the present invention is to provide a combination of a golf club head and a weight member, wherein a filling material is used for fixing the weight member in the golf club head, providing improved vibration-absorbing effect, improved striking stability, and improved gripping comfort.
  • A further object of the present invention is to provide a combination of a golf club head and a weight member, wherein a filling material is used for reliably fixing the weight member in the golf club head.
  • SUMMARY OF THE INVENTION
  • In accordance with an aspect of the invention, a golf club head includes a recession in a sole thereof, and a weight is securely mounted in the recession to adjust a center of gravity of the golf club head. A filling material is provided to seal the recession and to bury and fix the weight member. The filling material simplifies the process for fixing the weight member in the golf club head and receives vibrations generated as a result of striking a golf ball.
  • Other objects, advantages and novel features of this invention will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings.
  • BRIEF DESCRIPTION OF THE DRAWINGS
  • FIG. 1 is a sectional view of a conventional golf club head;
  • FIG. 2 is a sectional view of another golf club head;
  • FIG. 3 is a sectional view of a first embodiment of a golf club head in accordance with the present invention;
  • FIG. 4 is a sectional view of a second embodiment of the golf club head in accordance with the present invention;
  • FIG. 5 is a sectional view of a third embodiment of the golf club head in accordance with the present invention;
  • FIG. 6 is a sectional view of a fourth embodiment of the golf club head in accordance with the present invention;
  • FIG. 7 is a sectional view of a fifth embodiment of the golf club head in accordance with the present invention; and
  • FIG. 8 is sectional view of a sixth embodiment of the golf club head in accordance with the present invention.
  • DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
  • Preferred embodiments of the present invention are now to be described hereinafter in detail, in which the same reference numerals are used in the preferred embodiments for the same parts as those in the prior art to avoid redundant description.
  • Referring to FIG. 3, a first embodiment of a golf club head 10 in accordance with the present invention is a club head of an iron club and made of a metal having a low specific gravity, such as a titanium alloy, stainless steel, Fe—Mn—Al alloy, soft iron alloy, or other iron alloy. The golf club head 10 includes a recession 11 in a sole (not labeled) thereof. A weight member 20 is inserted into the recession 11. The recession has an opening (not labeled) that faces upward and that is sealed by the filling material 30.
  • The weight member 20 is made of a material having a high specific gravity, such as a W—Fe—Ni alloy. The weight member 20 has a sectional area substantially the same as that of the recession 101 of the golf club head 10. Thus, when the weight member 20 is mounted in the recession 11, a perimeter of the weight member 20 is in contact with a perimeter wall delimiting the recession 11, and a bottom face of the weight member 20 is in intimate contact with a bottom wall delimiting the recession 11.
  • The filling material 30 fills the opening of the recession 11 by means of heat pressing or injection molding, thereby burying and fixing the weight member 20 in the recession 11. Thus, the weight member 20 is reliably fixed in the recession 11. This burying process can be performed at room temperature. The welding process, heating process, or high pressure applying process required in the prior art process for mounting a weight member into a recession of a golf club head is avoided; namely, the process for assembling the weight member 20 is expedited and simplified.
  • The filling material 30 is preferably made of a light material. Particularly suitable material includes a light material having a specific gravity smaller than 4.0. For example, the light material may be selected from a group consisting of resins (e.g., epoxy resin), high molecular polymer materials, rubber, thermoplastic elastomers, polyurethane elastomeric filling materials, carbon fibers, light alloys (e.g., titanium alloys, aluminum alloys, etc.), and adhesive composite powders thereof. The filling material 30 also provides a vibration-absorbing function. Thus, the vibrations resulting from striking a golf ball are absorbed by the filling material 30, improving the vibration-absorbing effect, improving the striking stability, and improving the gripping comfort. The filling material 30 fills the opening of the recession 11 by means of heat pressing or injection molding and provides improved bonding strength and improved burying effect. Further, the center of gravity of the golf club head 10 can be advantageously shifted downward by means of selecting a filling material 30 having an appropriate specific gravity, allowing flexible adjustment in the center of gravity of the golf club head 10.
  • Further, as illustrated in FIG. 3, a striking plate 12 is engaged to a front side of the body (not labeled) of the golf club head 10, and a hosel 13 is formed on a side of the body of the golf club head 10. A shaft (not shown) is mounted to the hosel 13. The striking plate 12 can be fixed to the body of the golf club head 10 by insertion, pressing, brazing, welding, or screwing. Alternatively, the striking plate 12 can be integrally formed with the body of the golf club head 10. The body of the golf club head 10 can be integrally made by precision casting, casting, mechanical processing, pressure-casting, forging, injection molding, etc. Alternatively, the body of the golf club head 10 can be made by means of section-by-section engagement.
  • FIG. 4 shows a second embodiment of the invention, wherein the opening of the recession 11 faces rearward. Further, the shape of the opening of the recession 11 may vary to match the appearance of the golf club and to match the shape of the weight member 20. For example, the opening of the recession 11 may be circular, oval, polygonal, or star-like. Further, the type and color of the filling material 30 can be selected. Alternatively, filling materials 30 of different types and colors can be used at the same time. Thus, in addition to burying the weight member 20 and absorbing vibrations generated as a result of striking a golf ball, the filling material 30 provides an aesthetic appearance on the back of the golf club head 10.
  • FIG. 5 shows a third embodiment of the invention, wherein the opening of the recession 11 faces downwardly. The filling material 30 is, e.g., a polyurethane elastomeric filling material or rubber to provide a buffering effect and anti-sliding effect while burying the weight member 20 and absorbing vibrations as a result of striking a golf ball.
  • FIG. 6 illustrates a fourth embodiment of the invention, wherein a perimeter wall delimiting the recession 11 of the golf club head 10 includes a plurality of grooves 111 adjacent to the opening of the recession 11. The grooves 111 can be arranged to in annular, star-spangled, or irregular manner. The grooves 111 allow the filling material 30 to be securely engaged in the opening of the recession 11 in a “snapping” manner, preventing the filling material 30 from disengaging from the recession 11. The bonding reliability of the weight member 20 is thus improved. Further, to avoid adverse affect to the distribution of the momentum imparted by the striking plate 12, the grooves 111 are preferably formed on a rear side of the striking plate 12.
  • FIG. 7 shows a fifth embodiment of the invention, wherein the golf club head 10 is a club head of a wooden club that includes a compartment 100, a recession 11, a striking plate 12, and a hosel 13. The recession 11 is an extension extending from the sole toward the compartment 100. A weight member 20 is mounted in the recession 11, and a filling material 30 is then filled into the recession 11 to bury and fix the weight member 20, thereby expediting and simplifying the process for mounting the weight member 20. The filling material 30 also absorbs vibrations generated as a result of striking a golf ball and provides an aesthetic appearance on the back of the golf club head 10, as the case of the second embodiment of FIG. 4.
  • FIG. 8 shows a sixth embodiment of the invention modified from the fifth embodiment, wherein the a perimeter wall delimiting the recession 11 of the golf club head 10 includes a plurality of grooves 111 adjacent to the opening of the recession 11. The grooves 111 can be arranged to in annular, star-spangled, or irregular manner. The grooves 111 allow the filling material 30 to be securely engaged in the opening of the recession 11 in a “snapping” manner, preventing the filling material 30 from disengaging from the recession 11. The bonding reliability of the weight member 20 is thus improved.
  • While the principles of this invention have been disclosed in connection with specific embodiments, it should be understood by those skilled in the art that these descriptions are not intended to limit the scope of the invention, and that any modification and variation without departing the spirit of the invention is intended to be covered by the scope of this invention defined only by the appended claims.

Claims (13)

1. A combination of a golf club head and a weight member, comprising:
a golf club head including a recess proximate a sole thereof, the recess having an opening;
a weight member mounted in the recess of the golf club head; and
a vibration-absorbable filling material filled in the recess of the golf club head, the vibration-absorbable filling material sealing the opening of the recess, the vibration-absorbable filling material burying and fixing the weight member, the vibration-absorbable filling material being made of a light material selected from a group consisting of resins, high molecular polymer materials, rubber, thermoplastic elastomers, polyurethane elastomeric filling materials, carbon fibers, light alloys, and adhesive composite powders thereof.
2. (canceled)
3. (canceled)
4. The combination of a golf club head and a weight member as claimed in claim 1, wherein a plurality of grooves are defined in a perimeter wall delimiting the recess and located adjacent to the opening of the recess, the grooves improving bonding reliability of the filling material.
5. The combination of a golf club head and a weight member as claimed in claim 1, wherein the opening of the recess faces upward.
6. The combination of a golf club head and a weight member as claimed in claim 1, wherein the opening of the recess faces rearward.
7. The combination of a golf club head and a weight member as claimed in claim 1, wherein the opening of the recess faces downward.
8. The combination of a golf club head and a weight member as claimed in claim 1, wherein the golf club head is a club head of an iron club.
9. The combination of a golf club head and a weight member as claimed in claim 1, wherein the golf club head is a club head of a wooden club.
10. The combination of a golf club head and a weight member as claimed in claim 1, wherein the vibration-absorbable filling material fills the opening of the recess by one of heat pressing and injection molding to bury and fix the weight member in the recess.
11. The combination of a golf club head and a weight member as claimed in claim 4, wherein the plurality of grooves fail to encircle the perimeter wall.
12. The combination of a golf club head and a weight member as claimed in claim 1, wherein a weight member is mounted in the recess of the golf club head via the opening and the weight member has an end in contact with the recess.
13. The combination of a golf club head and a weight member as claimed in claim 1, the vibration-absorbable filling material seals the opening of the recess such that the weight member is irremovable and sandwiched in between the recess and the vibration-absorbable filling material.
US10/695,778 2003-10-28 2003-10-30 Combination of a golf club head and a weight member Abandoned US20050096151A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2003367352A JP2005130911A (en) 2003-10-28 2003-10-28 Connecting structure between golf club head and weight
US10/695,778 US20050096151A1 (en) 2003-10-28 2003-10-30 Combination of a golf club head and a weight member

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2003367352A JP2005130911A (en) 2003-10-28 2003-10-28 Connecting structure between golf club head and weight
US10/695,778 US20050096151A1 (en) 2003-10-28 2003-10-30 Combination of a golf club head and a weight member

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US20060014594A1 (en) * 2004-07-13 2006-01-19 Wen-Ching Hou Fe-Mn-Al alloy club body combining with a Ti alloy striking plate
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US20060194641A1 (en) * 2005-02-25 2006-08-31 Acushnet Company Multi-piece golf club head with improved inertia
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