Golf Club Head Inertia Optimization via Localized Weighting
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Solution Overview
Problem
Current golf club designs fail to optimize Moment of Inertia (MOI) characteristics, particularly MOI-Z and MOI-SA, and Center of Gravity (CG) location, which affects performance in terms of resistance to rotational movement and forgiveness during off-center impacts.
Innovation Solution
A golf club head design with a strategic placement of weighting members and materials, optimizing MOI-X, MOI-Y, and MOI-Z values, along with a rearward CG location, to achieve a high MOI-Y and MOI-X while minimizing MOI-Z and MOI-SA, using a combination of steel and titanium materials and specific weight distribution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If weighting members are placed rearward to increase MOI-Y and MOI-X for forgiveness, then resistance to rotational movement improves, but MOI-Z and MOI-SA increase which reduces club head speed
Solution Approach 1:
The patent applies local quality by strategically positioning weighting members at specific locations within the club head - particularly in the heel and toe regions and rearward areas - to locally increase MOI-Y and MOI-X for forgiveness while controlling the overall distribution to limit increases in MOI-Z and MOI-SA, thereby maintaining club head speed.
Solution Approach 2:
The patent utilizes parameter changes by precisely adjusting the weight, position, and distribution of weighting members to achieve specific MOI ratios (MOI-Y/MOI-Z > 1.50 and MOI-X/MOI-Z > 1.25) while keeping MOI-Z and MOI-SA below certain thresholds, optimizing both forgiveness and speed performance.
2Reliability
If MOI-Y and MOI-X are increased for off-center impact forgiveness, then stability upon impact improves, but MOI-Z increases which negatively affects ball speed
Solution Approach 1:
The patent applies local quality by placing weighting members specifically in heel and toe regions to locally enhance MOI-Y for off-center impact forgiveness, while controlling the vertical distribution to limit MOI-Z increases that would reduce ball speed.
Solution Approach 2:
The patent utilizes parameter changes by optimizing the weight and position of weighting members to achieve specific MOI ratios (MOI-Y/MOI-Z > 1.50) while maintaining MOI-Z below thresholds that would compromise ball speed, thereby balancing forgiveness and speed performance.
3Stability of the object's composition
If weighting members are added to control MOI characteristics, then MOI-Y and MOI-X improve, but device complexity increases
Solution Approach 1:
The patent applies local quality by incorporating weighting members as discrete, localized components within specific regions of the club head (heel, toe, rearward areas), allowing precise control of MOI characteristics while maintaining relatively simple overall club head structure and manufacturing processes.
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
Enhances resistance to twisting and forgiveness, leading to improved club head speed and ball speed by achieving a unique balance of MOI and CG location, outperforming prior art designs in terms of distance and performance.
Implementation Method 1
The MOI of a golf club head generally is a term used to describe the ability of an object to resist rotational movement upon impact with a secondary object
Data Source
AI summary
A golf club head that is capable improving on the inertia properties of a golf club head all while also improving the Center of Gravity (CG) location is disclosed herein. More specifically, the golf club head in accordance with the present invention achieves a relative low Moment of Inertia (MOI) about the Z-axis (MOI-Z) as well as a relatively low MOI about the Shaft-axis (MOI-SA), all combined with a high MOI about the X and Y-axis (MOI-X and MOI-Y) and maintaining a consistently and relatively low CG location measured along a direction tangent to the hosel axis along the X-Y plane (CG-B).