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Hollow golf bar head

A technology for golf club heads and club heads, which can be applied to golf balls, golf clubs, rackets, etc., and can solve problems such as insufficient design freedom and insufficient rebound

Inactive Publication Date: 2004-11-03
THE YOKOHAMA RUBBER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, even in such a golf club head that combines the characteristics of different types of materials, the degree of freedom of design and the degree of repulsion are still insufficient.

Method used

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Examples

Experimental program
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Effect test

Embodiment

[0041] In the hollow golf club head in which the club head body is formed of metal, comparative example 1 (conventional example) made of a single metal material was manufactured, and a hole was formed near the center of the top or sole, and various types of golf balls were used. Examples 1 to 4 and Comparative Examples 2 to 3 in which the lid member made of a material closes the hole. In Table 1, "SUS alloy" means stainless steel, and "FRP" means fiber-reinforced plastic.

[0042] These golf club heads were evaluated for the coefficient of repulsion and design freedom, and the results are summarized in Table 1. The evaluation results are represented by an index with Comparative Example 1 as 100. The rebound coefficient means that the larger the index value, the greater the initial velocity of the golf ball and the greater the flying distance. The degree of freedom in design is the range of weight distribution when the total mass of the club head is 190g, which means that the...

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PUM

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Abstract

The hollow golf club head of the present invention has raised durability, raised elasticity and increased design freedom. The golf club head has one main body of metal and with one opening near the top center and one cover to the opening and of material different from that for the main body. The ratio between the specific weight of the main body and that of the cover is greater than 1.3.

Description

technical field [0001] The present invention relates to a golf club head having a hollow structure, and more specifically, to a golf club head which improves repulsion and increases design freedom by compounding different kinds of materials, compared with the case where it is only composed of a single metal material Hollow golf club head. Background technique [0002] A metal hollow golf club head generally lowers the center of gravity by increasing the weight distribution of the sole. However, in recent years, due to the need to increase the volume of the club head as much as possible within the limited range of the mass of the club head, the range of weight distribution for achieving a lower center of gravity and the like has been narrowed and the degree of freedom in design has been reduced. Furthermore, if the center of gravity of the club head is not sufficiently lowered, there are disadvantages such as that the elastic force of the end surface cannot be exerted to the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A63B53/04A63B102/32
Inventor 中原纪彦森智朗西泽洋宫本昌彦山本真司
Owner THE YOKOHAMA RUBBER CO LTD