Golf Club Head Internal Weighting for Forged-Style Customization

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Solution Overview

Problem

Golf club heads with external weight members lack the aesthetic and feel of a unitary construction, and existing designs fail to provide customizable weight allocation while maintaining a forged-style appearance.

Innovation Solution

A golf club head with a multi-component construction featuring internal weight members enclosed between front and rear bodies, allowing for customizable weight distribution, material properties, and aesthetic adjustments, mimicking a unitary construction.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If external weight members are used in golf club heads, then weight customization is achieved, but aesthetic appearance and unitary construction feel are compromised

Engineering Contradiction:
Improveweight customizationVSAvoidaesthetic appearance
Core Design Contradiction:
Adaptability or versatilityVSShape

Solution Approach 1:

The patent embeds weight members within internal cavities of the club head body, nesting the weighting function inside the aesthetic shell. This allows weight customization through selectable weight members while maintaining the smooth, unitary appearance of the club head exterior, resolving the contradiction between adaptability and shape.

Inventive Principle:
Principle #7Nested doll (Nesting)

Solution Approach 2:

The patent extracts the weight members from external positions and relocates them to internal cavities within the club head. This separation allows the weight customization function to be preserved while the external aesthetic appearance remains uncompromised, as the weight members are no longer visible or protruding.

Inventive Principle:
Principle #2Taking out (Extraction)

2Adaptability or versatility

If external weight members are used, then weight allocation customization is possible, but the club head lacks unitary construction aesthetics

Engineering Contradiction:
Improveweight allocation customizationVSAvoidconstruction complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The weight members are nested within internal cavities of the club head body, creating a multi-layered structure where the aesthetic shell contains the functional components. This maintains unitary construction appearance while enabling weight allocation customization through the selection and installation of different weight members.

Inventive Principle:
Principle #7Nested doll (Nesting)

3Shape

If weight members are enclosed internally, then aesthetic appearance is maintained, but weight customization capability must be preserved

Engineering Contradiction:
Improveaesthetic appearanceVSAvoidweight customization capability
Core Design Contradiction:
ShapeVSAdaptability or versatility

Solution Approach 1:

The patent segments the club head into the main body structure and separate weight members that can be independently selected and installed. The internal cavities are designed to receive these modular weight members, allowing customization of weight allocation while maintaining the intact aesthetic appearance of the club head exterior.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The patent enables dynamic customization of weight configuration by allowing different weight members to be installed in various internal cavities. This dynamic adaptability is achieved while the weight members remain enclosed internally, preserving the aesthetic appearance across different customization configurations.

Inventive Principle:
Principle #15Dynamics

4Shape

If internal weight members are used, then unitary construction appearance is achieved, but weight distribution customization is limited

Engineering Contradiction:
Improveunitary construction appearanceVSAvoidweight distribution customization
Core Design Contradiction:
ShapeVSAdaptability or versatility

Solution Approach 1:

The patent divides the weight distribution system into multiple independent weight members that can be placed in different internal cavities at various locations within the club head. This segmentation enables fine-tuned weight distribution customization while each weight member remains enclosed, maintaining the unitary construction appearance.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The patent utilizes three-dimensional space within the club head body by creating internal cavities at different positions and orientations. This allows weight members to be distributed across multiple spatial dimensions, enabling comprehensive weight distribution customization while all components remain internally enclosed.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

Data Source

PatentEP3930861B1Multi-component golf club head
Publication Date: 2026.02.18 KARSTEN MFG CORP
  • EP3930861B1 patent drawingFigure 1~2
  • EP3930861B1 patent drawingFigure 3~4
  • EP3930861B1 patent drawingFigure 5~6

AI summary

Embodiments of golf club heads with enclosed weight members are described herein. In many embodiments, the club head comprises a body having a front end, a back end, a heel end, a toe end, a top rail, and a sole; the body further including a front body defining the front end; a rear body coupled to the front body, wherein the rear body is formed of a second material having a second density; a plurality of weight receptacles defined in one or both of the front body and the rear body and one or more weight members received into the weight receptacles, the one or more weight members being formed of a third material having a third density; and wherein the one or more weight members are fully enclosed between the front body and the rear body.