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Multilayer solid golf ball

a golf ball and multi-layer technology, applied in the field of golf balls, can solve the problems of deteriorating the cor of the ball, the inability to keep the raised temperature of the golf ball, and the inability to keep the raised cor of the golf ball for a long time, so as to improve the cor deterioration of the ball and the effect of low thermal conductivity

Inactive Publication Date: 2010-03-04
NIKE INC +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0006]The primary objective of the present invention is to provide a multilayer solid golf ball, which has better properties in flying distance and ball control in a cold weather.
[0008]The present invention provides the enclosing layer with the low thermal conductivity between the core and the cover to improve the COR deterioration of the ball in a cold weather that may help the ball control and the flying distance.

Problems solved by technology

However, above warming ways cannot keep the raised temperature of the golf ball for a long time.
Therefore, the raised COR of the golf ball cannot be kept for a long time by using above-mentioned ways.
The temperature will drop quickly when the ball leaves the golfer's body or the golf ball heater, which will deteriorate the COR of the ball too.
The sudden changes of the COR make it difficult for the golfer to predict and control the flying distance of the ball.

Method used

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  • Multilayer solid golf ball
  • Multilayer solid golf ball

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Experimental program
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Embodiment Construction

[0011]As shown in FIG. 1, a multilayer solid golf ball 100 of the first preferred embodiment of the present invention includes a core 10, a cover 20, an intermediate layer 30, and an enclosing layer 40.

[0012]The core 10 has the COR greater than 0.750, more preferably greater than 0.770, and most preferably greater than 0.790. The core 10 may be made from a thermoplastic material or a thermosetting material, and the thermoplastic material is preferred. The thermoplastic material of the core 10 may be selected from the group consisting of ionomer resin, polyamide resin, polyester resin, polyurethane resin, and a mixture thereof. In the present embodiment, ionomer resin is preferred for the core 10. The suitable ionomer resin includes HPF and Surlyn®, both commercially available from E. I. Dupont de Nemous and Company, and IOTEK®, commercially available from Exxon Corporation. To get the greater COR, a main composition of the core 10 is preferably HPF, and Surlyn® and / or IOTEK® are sub...

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PUM

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Abstract

The present invention provides a multilayer solid golf ball having an enclosing layer between a core and a cover. The core has a coefficient of restitution (COR) greater than 0.750, and the enclosing layer has a thermal conductivity less than or equal to 0.20 W / m-K. The enclosing layer with low thermal conductivity may reduce the decrease of the COR of the ball in a cold weather that improves the ball control and the flying distance.

Description

BACKGROUND OF THE INVENTION[0001]1. Field of the Invention[0002]The present invention relates to a golf ball and, more particularly, to a multilayer solid golf ball having an enclosing layer with a low thermal conductivity therein.[0003]2. Description of the Related Art[0004]The flying distance is an important index that we evaluate a golf ball. There are three main elements affecting the flying distance of the golf ball and they are “initial velocity”, “spin rate”, and “launch angle”. Initial velocity is one of the primary physical properties affecting the flying distance of the golf ball. The coefficient of restitution (COR) is an alternate parameter of initial velocity of the golf ball, and the temperature will affect the COR. Taking 24° C. as the standard temperature, the physical properties, including the COR, of the golf ball will be affected when the temperature is lower than 24° C. We find that the COR is significantly positive relative to the temperature, so the golf ball u...

Claims

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Application Information

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IPC IPC(8): A63B37/02A63B37/12
CPCA63B37/0003A63B37/0039A63B37/004A63B37/02A63B37/0051A63B37/0061A63B37/0064A63B37/0045
Inventor CHENG, HSINCHOU, CHIEN-HSIN
Owner NIKE INC