Golf Ball Rubber Composition for Swing Speed Feedback
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Solution Overview
Problem
Conventional practice range golf balls with low resilience exhibit minimal change in flight distance or initial velocity with varying swing speeds, making it difficult for golfers to intuitively feel improvements in swing speed.
Innovation Solution
A golf ball comprising a cured product of a rubber composition containing natural rubber, a co-crosslinking agent such as methacrylic acid or its metal salt, and a crosslinking initiator, which enhances the resilience and responsiveness to swing speed changes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If a golf ball with low resilience is used for practice, then the flight distance is restricted, but the change in flight distance or initial velocity with swing speed changes is minimal
Solution Approach 1:
The patent changes the resilience parameter of the golf ball to an intermediate value (0.65-0.85) rather than using low resilience material. This parameter adjustment allows the ball to maintain restricted flight distance for practice purposes while simultaneously providing sufficient responsiveness to swing speed changes, enabling golfers to detect improvements in their swing.
Solution Approach 2:
The patent creates a dynamic response characteristic where the golf ball's flight distance and initial velocity change significantly with variations in swing speed. This dynamic behavior allows the ball to adapt its performance based on the golfer's input, providing real-time feedback that makes swing speed improvements detectable.
2Volume of moving object
If a golf ball with low resilience is used, then the flight distance is restricted for practice purposes, but the initial velocity shows minimal change with varying swing speeds
Solution Approach 1:
The patent adjusts the resilience parameter to an intermediate range (0.65-0.85) that balances two competing requirements: restricting flight distance for practice safety while maintaining sufficient initial velocity responsiveness to swing speed changes. This optimized parameter allows both constraints to be satisfied simultaneously.
Solution Approach 2:
The patent uses a composite rubber composition containing specific components (natural rubber, synthetic rubber, resins, and additives) in controlled proportions to achieve the target resilience range. This composite material structure enables precise tuning of both flight distance restriction and initial velocity responsiveness.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The golf ball demonstrates a significant change in flight distance or initial velocity with changes in swing speed, allowing golfers to intuitively feel improvements in swing speed performance.
Implementation Method 1
a cured product of a rubber composition comprising (a) a base rubber containing a natural rubber, (b) a co-crosslinking agent containing methacrylic acid and/or a metal salt thereof, and (c) a crosslinking initiator
Data Source
AI summary
An object of the present disclosure is to provide a golf ball having a great change in an initial velocity associated with a change in a swing speed. The present disclosure provides a golf ball comprising a constituent member, wherein at least a part of the constituent member is formed of a cured product of a rubber composition comprising (a) a base rubber containing a natural rubber, (b) a co-crosslinking agent containing methacrylic acid and/or a metal salt thereof and (c) a crosslinking initiator.