Fluid-Filled Bladder Golf Club Head Weight Distribution

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Solution Overview

Problem

Golf club heads struggle to maintain accuracy and reduce mis-hits due to uneven weight distribution and unexpected sounds during ball strikes, affecting the golfer's swing and ball flight.

Innovation Solution

Incorporating a fluid-filled bladder or interior chamber within the club head to adjust weight distribution and modify the sound profile, potentially covering a significant portion of the interior surface area, which can be used to bias the club for specific shots or correct swing flaws.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If weight is distributed unevenly in the club head, then the club can be biased for specific shots or correct swing flaws, but the accuracy and consistency of ball flight deteriorates

Engineering Contradiction:

Improveshot bias capabilityVSAvoidball flight accuracy

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

The patent employs a fluid-filled bladder system that allows dynamic adjustment of weight distribution within the club head. The fluid can be redistributed through valves and chambers, enabling the club to adapt its center of gravity position for different shot requirements while maintaining consistency through controlled, repeatable adjustments rather than fixed asymmetric weighting.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The invention changes the physical state and position of weight within the club head by using fluid that can be moved between different chambers and positions. This allows the weight distribution parameters to be modified without changing the overall club head structure, enabling shot-specific biasing while preserving accuracy through precise parameter control.

Inventive Principle:

Principle #35Parameter changes

2Adaptability or versatility

If traditional cavity back design is used to forgive mis-hits, then distance and accuracy are maintained on off-center strikes, but the club cannot provide customized weight distribution for specific swing corrections

Engineering Contradiction:

Improvecustomized weight distributionVSAvoidclub head structure

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent implements a nested structure where fluid-filled bladders and chambers are placed within the existing cavity back club head design. The bladder system is nested within the cavity, and valves and tubing are integrated into the existing club head structure, allowing customized weight distribution without significantly increasing overall complexity or altering the forgiving cavity back geometry.

Inventive Principle:

Principle #7Nested doll (Nesting)

3Reliability

If fluid-filled bladder is added to adjust weight distribution, then accuracy and feel are improved, but the device complexity and manufacturing difficulty increase

Engineering Contradiction:

Improveball flight accuracyVSAvoidclub head components

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The invention uses flexible membranes and thin-walled bladders that can be easily formed and sealed within the club head cavity. These flexible structures allow for simple construction compared to rigid weight adjustment mechanisms, enabling fluid-filled weight adjustment while maintaining relatively simple manufacturing processes and component integration.

Inventive Principle:

Principle #30Flexible shells and thin films

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 fluid-filled bladder or chamber allows for customizable weight distribution and sound modulation, enhancing accuracy and reducing mis-hits by improving the 'feel' and vibration damping, thus aiding in achieving desired ball flight trajectories.

Implementation Method 1

improving the 'feel' and vibration damping

Methodology Applied

Scientific EffectVibration damping: Damping

Implementation Method 2

fluid-filled bladder... modify the sound profile

Methodology Applied

Scientific EffectFluid resistance: Drag

Implementation Method 3

adjust weight distribution... customizable weight distribution

Methodology Applied

Scientific EffectFluid redistribution:

Data Source

PatentUS8808106B2Golf clubs and golf club heads having fluid-filled bladders and/or interior chambers

Publication Date: 2014.08.19 KARSTEN MFG CORP

AI summary

Golf club heads include: (a) a club head body having a ball striking face and defining a rear cavity; (b) a fluid-filled bladder in the cavity; and (c) a retaining member holding the fluid-filled bladder in the cavity. Other club heads include: (a) a club head body having a ball striking face and defining a rear cavity; and (b) an insert member in the rear cavity, wherein the insert member interior includes one or more chambers facing the rear surface of the ball striking face. The chamber(s) may cover at least 30% of a total surface area of the interior surface of the insert member and/or at least 30% of a total interior major surface area of the rear cavity. Golf clubs including these club heads and methods of making such golf clubs and golf club heads also are described.