Titanium Iron Set With Zoned Tungsten Weighting

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Solution Overview

Problem

Conventional iron golf clubs exhibit varying performance characteristics due to differences in loft, launch angle, and center of gravity, leading to inconsistent ball trajectories and distances across different clubs in a set.

Innovation Solution

A set of golf clubs with club heads having specific lofts and incorporating tungsten weight members, particularly in the heel and toe, to adjust mass distribution and improve performance consistency, with varying tungsten content in each club to enhance moment of inertia and center of gravity positioning.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If tungsten weight members are added to adjust mass distribution, then ball flight consistency and distance control are improved, but device complexity increases

Engineering Contradiction:

Improveball flight consistencyVSAvoidclub head structure

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The club head is divided into multiple functional zones with distinct tungsten weight members placed at specific locations (heel, toe, mid-sole) to independently control different aspects of ball flight and spin characteristics

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Different regions of the club head are assigned different tungsten content and distribution to create localized mass properties that optimize specific performance characteristics for each zone

Inventive Principle:

Principle #3Local quality

2Strength

If varying tungsten content is used across different clubs, then moment of inertia and center of gravity positioning are enhanced, but manufacturing precision requirements increase

Engineering Contradiction:

Improvemoment of inertiaVSAvoidtungsten content control

Core Design Contradiction:

StrengthVSManufacturing precision

Solution Approach 1:

The tungsten content and distribution parameters are systematically varied across different club heads to optimize moment of inertia and center of gravity positioning for each specific club type and loft angle

Inventive Principle:

Principle #35Parameter changes

3Adaptability or versatility

If club head mass is varied across the set, then performance characteristics are optimized, but manufacturing complexity increases

Engineering Contradiction:

Improveperformance characteristicsVSAvoidmass variation control

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The set is segmented into different club types (long irons, mid irons, short irons) with systematically varied mass characteristics to optimize performance for each category while maintaining overall set consistency

Inventive Principle:

Principle #1Segmentation

Data Source

PatentUS20250325887A1Weighted titanium iron set

Publication Date: 2025.10.23 ACUSHNET CO

AI summary

The present invention is direct to a set of golf clubs comprising long irons, mid-irons and short irons. The invention contemplates the use of titanium for the main body portion and tungsten weight members coupled in a hollow cavity and a tungsten heel weight member coupled in a hosel cavity.