Iron Club Set Weighting for Progressive Center of Gravity Control
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Solution Overview
Problem
Conventional sets of iron golf clubs have a constant center of gravity distribution across the face, which limits the precision and variability in ball flight trajectories, particularly between long, mid, and short irons, as the loft angle increases, resulting in less optimal performance characteristics.
Innovation Solution
A set of golf clubs with progressively allocated center of gravity positions and moments of inertia across long, mid, and short irons, where the center of gravity is positioned further away from the face center towards the hosel in short irons, and optimized weight distribution using high-density weight members and apertures in the face stabilizing bar to enhance moment of inertia and weight distribution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a constant center of gravity distribution is used across all irons in a set, then manufacturing is simplified, but shot control precision and trajectory variability deteriorate
Solution Approach 1:
The patent applies local quality by varying the center of gravity position specifically in the short irons (30-50 degrees loft) while maintaining constant positioning in long and mid irons. This localized modification optimizes shot control for high-loft clubs without complicating the manufacturing of the entire set, as the majority of clubs retain the standard center of gravity positioning scheme.
2Reliability
If the center of gravity is positioned further from the face center in short irons, then trajectory predictability improves, but manufacturing complexity increases
Solution Approach 1:
The patent implements parameter changes by modifying the horizontal distance of the center of gravity from the face center specifically for short irons. The center of gravity is positioned at a greater horizontal distance (3-5 mm) in short irons compared to long and mid irons (1-3 mm), thereby improving trajectory predictability through optimized weight distribution without requiring fundamental design changes to the manufacturing process.
3Measurement precision
If high-density weight members are added to optimize moment of inertia, then shot control improves, but club head weight increases
Solution Approach 1:
The patent applies local quality by strategically positioning high-density weight members (such as tungsten or tungsten carbide) in specific locations within the club head, particularly in the heel and toe regions and within the hosel area of short irons. This localized weight placement optimizes the moment of inertia and center of gravity position without uniformly increasing the overall club head weight, thereby improving shot control precision while maintaining acceptable weight characteristics.
Data Source
AI summary
The present invention is directed to a set of golf clubs comprising long irons, mid irons and short irons. Preferably, the long and mid irons have a face stabilizing bar and back panel that have a plurality of apertures in the face stabilizing bar and/or the back wall.