Golf Ball Dimple Volume and Deformation Time Optimization
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Solution Overview
Problem
Golf balls optimized for high head speed golfers create an unfair advantage, leading to excessive distance disparities when used by golfers with lower head speeds, making it difficult for skill-based competition, especially in short games where spin control is crucial.
Innovation Solution
A golf ball design featuring a polyurethane-covered core with dimples occupying 0.80 to 0.92% volume ratio and a diameter of at least 42.8 mm, optimized for a head speed of 40 m/s, ensuring a deformation time of 660 μsec or less, and a core hardness profile that balances spin and distance control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If golf balls are optimized for high head speed golfers, then distance is improved for high head speed players, but distance disparity increases making competition unfair for lower head speed players
Solution Approach 1:
The patent applies parameter changes by precisely controlling the volume occupancy ratio of dimples (0.80-0.92%) and the deformation time (660 μsec or less) to optimize ball flight characteristics. This resolves the contradiction by creating a ball that performs consistently across different head speeds through optimized aerodynamic parameters rather than maximizing performance for any single speed range
Solution Approach 2:
The patent achieves universality by designing a golf ball that serves multiple functions simultaneously: it provides acceptable distance for both high and low head speed players while maintaining spin control for skill-based competition. The specific dimple volume ratio and deformation time parameters enable the ball to be universally suitable for players with varying power levels
2Ease of operation
If spin rate is increased in short game, then controllability is improved, but run distance increases which is undesirable
Solution Approach 1:
The patent applies parameter changes by optimizing the deformation time parameter (660 μsec or less) and dimple characteristics to achieve the desired balance between spin rate and run distance. This precise parameter control allows the ball to generate sufficient spin for controllability while limiting excessive run, resolving the contradiction between ease of operation and speed control
3Speed
If ball diameter is increased, then distance is improved, but deformation time increases exceeding the 660 μsec limit
Solution Approach 1:
The patent applies parameter changes by simultaneously optimizing multiple parameters: maintaining a sufficient ball diameter for distance while controlling the deformation time to 660 μsec or less through material selection and structural design. This multi-parameter optimization resolves the contradiction between speed (distance) and time (deformation time)
Solution Approach 2:
The patent employs composite materials in the ball construction, combining different materials with complementary properties to achieve both adequate diameter for distance and controlled deformation time. The composite structure allows the ball to maintain size while managing deformation characteristics through material property optimization
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 reduces distance disparities between high and low head speed golfers, enhances spin rate in short games for better controllability, and maintains a fair competitive environment by optimizing distance and spin without relying on power.
Implementation Method 1
which cover has a plurality of dimples on the surface thereof
Implementation Method 2
the dimples thereon have a volume occupancy ratio VR within the range of 0.80 to 0.92%
Implementation Method 3
the cover is formed primarily of polyurethane
Implementation Method 4
the time t1 required from initial contact by the driver with the ball for deformation of the ball to reach a maximum and the time t2 required from the state of maximum ball deformation for the ball and driver to separate is 660 μsec or less
Data Source
AI summary
In a golf ball having a core and a cover with a plurality of dimples on the surface, the cover is formed primarily of polyurethane, the dimples have a specific volume occupancy ratio and the ball has a diameter of at least 42.8 mm. In an impact test carried out by hitting the ball with a driver at a head speed of 40 m/s, the sum t1+t2 of the time t1 required from initial contact by the driver with the ball for deformation of the ball to reach a maximum and the time t2 required from the state of maximum ball deformation for the ball and driver to separate is 660 μsec or less. This golf ball makes it possible for golfers who have a high head speed and ordinary golfers who do not to compete without relying excessively on superiority in terms of distance.