Two-Part Putter Head Weighting for Higher MOI and Better Sound
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Solution Overview
Problem
Existing putter-type golf club heads face challenges with weight distribution, leading to increased weight, vibrations, and undesirable sound, while requiring costly manufacturing processes and recesses for weight ports.
Innovation Solution
A two-part golf club head design with a high density material and a lower density material design with a high density lower portion and a low density upper portion, providing increased MOI, perimeter weighting, and consistent ball speed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If weight ports are installed in the heel and toe regions to increase MOI, then the ball path becomes straighter, but the golf club head becomes heavier than ideal weight
Solution Approach 1:
The patent applies local quality by using high-density material specifically in the lower portion (heel and toe regions) to concentrate weight where needed for MOI enhancement, while keeping the upper portion made of lower-density material to control overall weight. This localized density variation achieves the desired weight distribution without uniformly increasing club head weight.
Solution Approach 2:
The patent employs composite materials by combining two different density materials - a high-density material for the lower portion and a lower-density material for the upper portion. This composite construction allows independent optimization of weight distribution and overall mass, achieving ideal MOI while maintaining target weight specifications.
2Stability of the object's composition
If weight ports are permanently attached through epoxies, glues, or machining methods, then the weight distribution is secured, but the manufacturing cost increases
Solution Approach 1:
The patent merges the weight distribution function into the base structure itself by forming the lower and upper portions as integral components. This eliminates the need for separate weight ports and their associated attachment processes (epoxies, glues, machining), thereby reducing manufacturing complexity and cost while maintaining stable weight distribution.
Solution Approach 2:
The patent extracts the unnecessary intermediate components (weight ports, fasteners, adhesives) from the design by directly forming the weight-distributing structure as part of the base. This simplification removes multiple manufacturing steps and reduces production cost while achieving the same functional outcome.
3Adaptability or versatility
If cavities or recesses are created to place weight ports during manufacturing, then the weight ports can be installed, but the cost of the putter head increases
Solution Approach 1:
The patent removes the need for cavities or recesses by integrating the weight distribution function directly into the base structure through the two-density material construction. This eliminates the additional manufacturing complexity and cost associated with creating and filling cavities, while still achieving precise weight distribution.
4Stability of the object's composition
If weight ports are used in the heel and toe regions, then the MOI is increased, but vibrations occur within the cavity or recess during impact
Solution Approach 1:
The patent converts the potential harm of cavities causing vibrations into a benefit by eliminating the cavities entirely through integral construction. The solid two-density structure maintains high MOI while preventing vibration-induced hollow sounds, turning the design challenge into a performance advantage.
5Adaptability or versatility
If cavities and recesses are present in the club head, then weight ports can be installed, but the sound of the club head changes creating a hollow sound
Solution Approach 1:
The patent eliminates the source of hollow sounds by using solid integral construction without cavities or recesses. The two-density material design achieves weight distribution goals while producing a solid, pleasing impact sound, converting the acoustic disadvantage into an aesthetic advantage.
Data Source
Figure 1A~1B
Figure 1C
Figure 2A~2B
AI summary
Embodiments of multi-component putters comprising an upper portion and a lower portion are described herein. The upper portion is formed from a first material having a first density and the lower portion is formed from a second material having a second density. The first density is less than the second density. The upper portion is affixed to the lower portion via an adhesive or a combination of adhesives and interlocking geometry. The multi-component putter design provides increased forgiveness and moment of inertia compared to a putter formed from a single material.