Multi-Density Golf Club Head Weighting with Segmented Bonding

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Solution Overview

Problem

Existing golf club head designs face challenges in achieving proper bonding of weights with the club head body due to incompatible materials, leading to structural integrity issues and aesthetic concerns, particularly with materials like tungsten that have weld-averse traits.

Innovation Solution

A multi-density weight system comprising different materials with varying densities, where a first weight component with a pro-bond characteristic is bonded to a second weight component with an anti-bond characteristic, using bonding mechanisms such as swedging, sintering, or compression to secure the weight components to the club head body, allowing for enhanced weight distribution and vibrational characteristics.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Weight of moving object

If weights made of materials like tungsten are used to adjust mass distribution, then weight distribution and center of gravity adjustment are improved, but bonding compatibility with the club head body deteriorates due to weld-averse traits

Engineering Contradiction:

Improveweight distributionVSAvoidbonding compatibility

Core Design Contradiction:

Weight of moving objectVSReliability

Solution Approach 1:

The weight system is divided into multiple components: a first weight component made of weld-averse material (e.g., tungsten) for optimal weight distribution, and a second weight component made of bondable material that interfaces with the club head body. This segmentation allows each component to fulfill its specific function without compromise.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The second weight component acts as an intermediary between the weld-averse first weight component and the club head body. It provides a bonding interface that is compatible with the body material while supporting the first weight component, thus mediating the incompatibility between tungsten and the body material.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Reliability

If alternative weight materials with bonding compatibility are used, then bonding reliability is improved, but weight distribution precision and aesthetic considerations deteriorate due to larger weight configurations required

Engineering Contradiction:

Improvebonding compatibilityVSAvoidweight distribution precision

Core Design Contradiction:

ReliabilityVSManufacturing precision

Solution Approach 1:

By separating the weight system into two functional components, the design achieves both high-density precision weighting (first component) and bonding compatibility (second component), eliminating the need for larger, less precise weight configurations.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The dual-component weight system functions as a composite structure where each material is selected for its optimal properties: the first component uses high-density weld-averse material for precision mass adjustment, while the second component uses bondable material for reliable attachment, creating a unified system that achieves both precision and reliability.

Inventive Principle:

Principle #40Composite materials

3Strength

If welding is used to bond weights to the club head body, then bonding strength is improved, but structural integrity deteriorates due to stresses from weld-averse materials

Engineering Contradiction:

Improvebonding strengthVSAvoidstructural integrity

Core Design Contradiction:

StrengthVSReliability

Solution Approach 1:

The segmentation strategy prevents welding of the weld-averse first weight component entirely, eliminating the source of structural integrity problems while still achieving strong bonding through the second weight component made of bondable material.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The second weight component serves as a mediator that undergoes bonding (welding or alternative bonding) to the club head body, protecting the first weight component from direct bonding stresses and preventing structural integrity deterioration.

Inventive Principle:

Principle #24Intermediary (Mediator)

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

The solution provides improved structural integrity and aesthetic appeal by ensuring secure bonding of weights, adjusting the center of gravity, and enhancing the impact feel of the club head while accommodating diverse material properties.

Implementation Method 1

the first and second weight components can be sintered together

Methodology Applied

Scientific EffectSintering: Sintering

Data Source

PatentUS8449405B2Club heads with multiple density weighting and methods of manufacturing the same

Publication Date: 2013.05.28 KARSTEN MFG CORP

AI summary

An apparatus can comprise a body with a receptacle, and a multi-density weight. The multi-density weight can comprise a first weight component with a first density, an inner portion and a periphery around the inner portion, and a second weight component with a second density and secured to the inner portion of the first weight component. The body, and the first and second weight components can comprise materials different from each other. The receptacle can have a receptacle base and a receptacle wall. The second weight component can comprise a material having a weld-averse trait with respect to the body. The surface of the body can be proximate to at least one of a hosel region, an upper toe region, a lower toe region, a heel region, a backside region, an upper-half region, or a lower-half region of the body. Other embodiments and related methods are also disclosed herein.