Multiple Material Putter with Angled Tungsten Weight
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Solution Overview
Problem
Current golf putters struggle to achieve a combination of high moment of inertia and low center of gravity, which is difficult to attain with existing configurations and materials.
Innovation Solution
A multiple material construction with a carbon steel body, a urethane dampening layer, and a tungsten alloy rear weight, featuring an angled configuration and contrasting colors, to create a high moment of inertia and low center of gravity, with the dampening layer and rear weight affixed to the body using fasteners or permanent methods.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a single material parent construction is used, then manufacturing simplicity is maintained, but moment of inertia and center of gravity control are insufficient
Solution Approach 1:
The putter head employs a composite construction with a steel body and a tungsten rear weight attached to the rear surface. This multi-material approach allows independent optimization of each component: the steel body provides structural integrity and face flexibility, while the tungsten weight (with density approximately 1.8 times that of steel) concentrates mass at the rear to achieve the desired moment of inertia (3200-5500 g-cm²) and low center of gravity position without compromising manufacturing feasibility
2Stability of the object's composition
If the rear weight is positioned farther from the hosel, then moment of inertia increases, but center of gravity control becomes more difficult
Solution Approach 1:
The patent optimizes the rear weight parameters including its position, mass (30-150 grams), and shape to achieve the desired moment of inertia while maintaining center of gravity control. The angled configuration of the rear weight relative to the putter body allows precise adjustment of mass distribution, ensuring the center of gravity remains appropriately positioned while maximizing the moment of inertia through the rearward placement of the high-density tungsten material
3Stability of the object's composition
If the putter body is made from high density material, then moment of inertia increases, but weight and cost increase
Solution Approach 1:
Instead of using high-density material throughout the entire putter body, the invention applies high-density tungsten only locally at the rear weight portion where mass concentration is most effective for increasing moment of inertia. The majority of the putter body (face, sole, and hosel) remains constructed from standard steel, providing the necessary structural properties at lower cost and weight. This localized high-density material placement achieves the required moment of inertia (3200-5500 g-cm²) while keeping the overall putter weight manageable and cost-effective
Data Source
AI summary
A golf club putter having a low head center of gravity and a high MOI is disclosed herein. The putter has a metal body comprising a face and a hosel, a low density dampening layer affixed to the body, and a high density rear weight affixed to the dampening layer, and the dampening layer has a first surface that forms an angle with an opposing second surface that is inversely proportional to the distance of the hosel from a heel side of the body.