Six-Piece Golf Ball Design for Spin Control
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Solution Overview
Problem
Current golf ball constructions face challenges in achieving high spin on wedge shots while minimizing spin on driver shots, while also maintaining durability and optimizing distance and feel for mid to long iron shots, due to the complex interaction of core and cover layer materials.
Innovation Solution
A six-piece golf ball design featuring a soft core with a hard inner cover layer and a soft outer cover layer, combined with three additional mantle layers, which balances durability and spin characteristics across different impact conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a multi-layer golf ball design is used, then spin characteristics and distance can be improved, but the complexity of material interaction becomes unpredictable
Solution Approach 1:
The golf ball is divided into six distinct layers (core, inner mantle, intermediate mantle, outer mantle, inner cover, outer cover) with each layer having specific thickness ranges and material properties. This segmentation allows independent optimization of each layer's function while maintaining overall performance predictability through controlled material interactions.
Solution Approach 2:
Different layers are assigned different material properties tailored to specific functions: the core provides compression control (PGA ≤30), inner mantle layers provide transition (flex modulus 2-30 kpsi), and outer cover layers provide spin control (Shore D 30-75). This local quality assignment ensures each region contributes optimally to overall performance.
2Ease of operation
If a soft core is used, then feel and sound performance are improved, but spin control on driver shots becomes difficult
Solution Approach 1:
Three mantle layers serve as intermediaries between the soft core (PGA ≤30) and the outer cover layers. These mantle layers with progressive flex moduli (2-30 kpsi for inner, 2-30 kpsi for intermediate, 10-50 kpsi for outer) control the energy transfer and deformation characteristics, enabling the soft core to provide good feel while the mantle layers regulate spin generation on different shot types.
Solution Approach 2:
The patent specifies precise parameter ranges for each layer to control performance: core PGA ≤30 for soft feel, outer cover Shore D 30-75 for spin control, and progressive flex modulus increases through the mantle layers. These parameter changes enable the ball to provide both soft feel and controlled spin characteristics.
3Strength
If a hard inner cover layer is used, then durability is improved, but spin on wedge shots may be reduced
Solution Approach 1:
The inner cover layer is assigned a specific Shore D hardness range (55-75) that balances durability and spin generation. This localized property assignment ensures the inner cover provides structural integrity and durability while the outer cover layer (Shore D 30-75) and mantle layers work together to generate sufficient spin on wedge shots through controlled deformation.
Solution Approach 2:
The golf ball uses a composite structure with six layers of different materials and properties. The combination of the hard inner cover (Shore D 55-75) with the softer outer cover and appropriately configured mantle layers creates a composite system that achieves both durability from the hard inner cover and spin generation from the softer outer layers during wedge shot impact.
Data Source
AI summary
Disclosed herein is a six piece golf ball wherein each part of the golf ball has certain characteristics.