Golf Ball Dual Core Deflection for Spin Control
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Solution Overview
Problem
Existing golf ball designs fail to achieve a dual core configuration that produces high spin for short game shots and low spin for driver shots, which is essential for optimal performance.
Innovation Solution
A golf ball with a dual core, dual mantle, and thermoplastic polyurethane cover design, where the inner core is made of polybutadiene with a specific deflection range, and the mantle layers are composed of ionomer materials, allowing for a coefficient of restitution greater than 0.79 and spin manipulation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a single core design is used, then the golf ball structure is simple, but it cannot produce both high spin for short game shots and low spin for driver shots
Solution Approach 1:
The core is divided into two separate cores with different properties: a first core with higher compression for short game shots and a second core with lower compression for driver shots. This segmentation allows each core to be optimized for specific shot types, enabling the golf ball to produce both high spin for short game and low spin for driver shots.
Solution Approach 2:
The patent employs a dynamic core configuration where the two cores can be selectively activated or deformed during different swing conditions. The first core deforms more under high compression forces (short game), while the second core deforms less under lower compression forces (driver), allowing dynamic adaptation to different shot requirements.
2Ease of operation
If the inner core is made softer (higher deflection), then the golf ball produces higher spin for short game shots, but the overall compression increases
Solution Approach 1:
The core is segmented into two distinct cores with different compression characteristics. The first core is softer and more compliant for generating spin during short game shots, while the second core is harder and more stable for driver shots. This segmentation allows the softer first core to provide high spin without excessively increasing overall compression when used in conjunction with the harder second core.
Solution Approach 2:
Different regions of the core have different mechanical properties. The first core region is designed with higher compliance for spin generation, while the second core region is designed with lower compliance for stability. This local differentiation of material properties allows the golf ball to achieve both high spin capability and controlled compression.
3Ease of operation
If the core compression is reduced, then the golf ball produces lower spin for driver shots, but the distance control decreases
Solution Approach 1:
The core is divided into two segments with different compression properties. The second core is specifically designed with lower compression to reduce spin for driver shots, while the first core provides higher compression for short game shots. This segmentation allows the lower compression second core to reduce spin without sacrificing distance control, as the first core can compensate when needed.
Solution Approach 2:
The patent changes the compression parameter by using two cores with different compression values. The second core has lower compression for driver shots to reduce spin and increase distance, while the first core has higher compression for short game shots. This parameter differentiation allows optimal performance for both shot types.
4Adaptability or versatility
If a dual core design is implemented, then the golf ball achieves optimal spin control for different shots, but the manufacturing complexity increases
Solution Approach 1:
The core is segmented into two separately manufactured cores that are then assembled together with the mantle and cover. This segmentation allows each core to be manufactured independently using optimized processes for its specific properties, and then assembled as a complete golf ball. The segmented approach balances manufacturing complexity with the benefits of dual core performance.
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 dual core and mantle design enables high spin for short game shots and low spin for driver shots, enhancing distance and control, while maintaining a high coefficient of restitution for optimal performance.
Implementation Method 1
The inner core center comprises a polybutadiene material and has a deflection of greater than 0.210 inch under a load of 100 kilograms
Data Source
AI summary
A golf ball comprising a core comprising an inner core center and an outer core layer disposed over the inner core center. The inner core center has a deflection of greater than 0.210 inch under a load of 220 pounds and the core has a deflection ranging from 0.120 inch to 0.080 inch under a load of 220 pounds. An inner mantle layer is disposed over the core, an outer mantle is disposed over the inner mantle layer, and a cover is disposed over the outer mantle.