Golf Ball Intermediate-Layer Protrusions for Spin-Stiffness Balance
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Solution Overview
Problem
Existing golf ball constructions struggle to balance the stiffness for high-speed club impacts while maintaining a desirable spin profile for lower speed shots.
Innovation Solution
The golf ball design incorporates protrusions on an intermediate layer to enhance energy transfer during high-speed club impacts, improving stiffness and reducing long game spin, while maintaining a high spin for wedge shots.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the intermediate layer is made thicker to increase stiffness for high-speed club impacts, then stiffness is improved, but the spin profile for lower speed shots deteriorates
Solution Approach 1:
The intermediate layer incorporates protrusions with different radial distances from the center of the golf ball, creating local variations in layer thickness. These protrusions provide increased stiffness in specific regions to reduce long game spin, while maintaining appropriate thickness in other regions to preserve spin profile for wedge shots, thus resolving the contradiction between overall stiffness and adaptability across different club types
2Use of energy by moving object
If the volume of the intermediate layer is increased to reduce long game spin, then energy transfer is improved, but the spin for wedge shots increases excessively
Solution Approach 1:
Rather than uniformly increasing the intermediate layer volume, the invention uses protrusions that strategically add material in specific radial zones. This localized approach optimizes energy transfer during high-speed impacts for reduced long game spin, while preventing excessive spin increase for lower speed wedge shots by maintaining appropriate layer volume distribution
Solution Approach 2:
The invention transitions from a uniform two-dimensional intermediate layer to a three-dimensional structure with protrusions extending at different radial distances. This dimensional change allows precise control over energy transfer characteristics and spin profile across different impact speeds without uniformly increasing overall layer volume
3Strength
If protrusions are added to the intermediate layer to enhance stiffness, then long game spin is reduced, but the device complexity increases
Solution Approach 1:
The intermediate layer is segmented into a base portion and multiple protrusions, each serving specific functional purposes. This segmentation allows the protrusions to be strategically positioned to provide stiffness where needed for reducing long game spin, while the modular structure facilitates manufacturing through techniques like overmolding or insert molding, thereby managing device complexity
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 design efficiently transfers energy during high-speed impacts, enhancing stiffness and maintaining spin profiles for various club types, thereby improving performance across different golf shots.
Implementation Method 1
disposing protrusions on an intermediate layer of a golf ball to more efficiently transfer energy during high-speed club impacts in order to reduce long game spin
Data Source
AI summary
A golf ball is disclosed herein that includes an intermediate layer having protrusions. Among other advantages, the geometry and profile of the protrusions are optimized to provide increased stiffness on shots with higher club head speeds, while maintaining the volume of the softer cover material in order to maintain sufficient spin on wedge shots. The protrusions are further configured to transfer energy during high speed club impacts and more efficiently reduce long game spin.