Progressive Iron Set Center of Gravity Allocation
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Solution Overview
Problem
Conventional sets of iron golf clubs have a constant center of gravity distribution, which limits the precision and variability of ball flight trajectories, as the loft angle increases, resulting in less distance and a steeper trajectory, failing to provide optimal performance across different irons.
Innovation Solution
A set of golf clubs with progressively allocated center of gravity, where long irons have a center of gravity between 0 mm and 2.5 mm from the face center, mid-irons between 0 mm and 2.5 mm, and short irons between 3 mm and 4 mm, with heel and toe weights strategically positioned to optimize moment of inertia and loft angle, and a constant blade length with increasing toe height and decreasing scoreline width.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional sets of iron golf clubs have a constant center of gravity distribution, then manufacturing is simplified, but ball flight precision and trajectory variability are limited
Solution Approach 1:
The patent applies local quality by varying the center of gravity position within the club head across different iron clubs in the set. Long irons have the center of gravity positioned differently than mid-irons, which differ from short irons. This localized variation in center of gravity allocation optimizes ball flight characteristics for each specific club while maintaining a consistent overall design approach throughout the set.
2Speed
If the loft angle of iron golf clubs increases, then the launch angle increases, but the distance decreases and trajectory becomes steeper
Solution Approach 1:
The patent employs parameter changes by systematically varying the center of gravity position parameter across the iron set. As loft angle increases from long irons to short irons, the center of gravity position is adjusted to compensate for the natural tendency toward steeper trajectories. This parameter adjustment allows players to maintain consistent ball flight characteristics and distance control across all irons despite the varying loft angles.
Data Source
AI summary
The present invention is directed to a set of golf clubs comprising long irons, mid-irons and short irons. The irons have a progressive horizontal CG location. Preferably, the long and MID irons have a CG located between about 1 mm and 3 mm towards the hosel and the short iron CG is located between about 3 mm and 4 mm toward the hosel. Further the irons have a substantially constant blade width with progressively decreasing scoreline width.