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Combination of a golf club head and a weight member

a golf club head and weight technology, applied in the field of golf club head and weight member combination, can solve the problems of adverse effects on the overall structural strength and toughness of the golf club head, and high cost of brazing, so as to achieve rapid and simplified the process

Inactive Publication Date: 2005-05-05
NELSON PRECISION CASTING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

"The invention is about a golf club head that has a cavity in the bottom and a weight is securely mounted inside to adjust the center of gravity. The cavity is filled with a material to seal it and hold the weight in place. This material helps to reduce vibrations caused by hitting a golf ball. The technical effect of this invention is to improve the stability and accuracy of the golf club head."

Problems solved by technology

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.
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.

Method used

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  • Combination of a golf club head and a weight member
  • Combination of a golf club head and a weight member
  • Combination of a golf club head and a weight member

Examples

Experimental program
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first embodiment

[0021] Referring to FIG. 3, 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.

[0022] 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 th...

second embodiment

[0026]FIG. 4 shows 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.

third embodiment

[0027]FIG. 5 shows 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.

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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 [0001] 1. Field of the Invention [0002] The present invention relates to a combination of a golf club head and a weight member. [0003] 2. Description of Related Art [0004]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 thicknes...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): A63B53/04A63B102/32
CPCA63B53/04A63B59/0092A63B2053/0491A63B53/047A63B53/0466A63B2053/0433A63B2053/0416A63B60/54A63B53/0416A63B53/0433A63B60/02A63B60/00
Inventor HOU, WEN-CHINGCHEN, CHAN-TUNG
Owner NELSON PRECISION CASTING
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