Front Fork Suspension Stabilizer With Counterweight Tuning

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Solution Overview

Problem

Existing bike suspension systems face challenges in effectively managing impacts from rough off-road terrain, leading to reduced rider comfort and control.

Innovation Solution

A suspension stabilizer system comprising a counterweight, guide assembly, and spring assembly, which is configured to attach to a bike's front fork suspension. The system includes a counterweight with a weight range of 0.25 to 5 pounds, a guide assembly for linear motion, and a spring assembly that provides resistance and sets a natural motion frequency of 3 to 15 Hertz.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Strength

If the spring and damping system are made stiffer to handle large jumps, then the bike can handle larger impacts, but the ride comfort deteriorates on smaller bumps

Engineering Contradiction:
Improveimpact handling capabilityVSAvoidride comfort
Core Design Contradiction:
StrengthVSEase of operation

Solution Approach 1:

The suspension stabilizer introduces a dynamic counterweight system that moves independently within the fork tubes. The counterweight (0.25-5 pounds) slides along guide assembly axes positioned at specific angles (30-60 degrees from vertical), creating a dynamic balancing effect that adapts to different terrain conditions. This dynamic mechanism allows the system to provide stability on rough terrain while maintaining ride comfort, resolving the contradiction between stiff suspension for large impacts and soft suspension for small bumps.

Inventive Principle:
Principle #15Dynamics

2Ease of operation

If the spring and damping system are made softer to improve ride comfort on small bumps, then the ride comfort improves, but the ability to handle large jumps deteriorates

Engineering Contradiction:
Improveride comfortVSAvoidimpact handling capability
Core Design Contradiction:
Ease of operationVSStrength

Solution Approach 1:

The suspension stabilizer employs counterweights (0.25-5 pounds) that move within the fork tubes to create balancing forces. These counterweights are guided by guide assemblies with axes positioned at 30-60 degrees from the vertical axis, allowing them to effectively counteract vibrations and impacts across a range of terrain conditions. This counterweight mechanism provides the additional support needed for large jumps while maintaining comfort on smaller bumps, resolving the contradiction between soft suspension for comfort and stiff suspension for large impacts.

Inventive Principle:
Principle #8Anti-weight (Counterweight)

3Device complexity

If a single spring and damping setup is used, then the device complexity is reduced, but the adaptability to different terrain types deteriorates

Engineering Contradiction:
Improvesuspension system simplicityVSAvoidterrain adaptability
Core Design Contradiction:
Device complexityVSAdaptability or versatility

Solution Approach 1:

The suspension stabilizer divides the fork suspension system into separate functional components: counterweights (0.25-5 pounds) that provide mass for stabilization, guide assemblies with specific axis orientations (30-60 degrees from vertical) that control motion paths, and spring assemblies that provide restoring forces. This segmentation allows each component to be optimized for its specific function while working together to provide terrain adaptability, resolving the contradiction between simple single-setup suspension and adaptable multi-configuration suspension.

Inventive Principle:
Principle #1Segmentation

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 suspension stabilizer system reduces the impact of bumps on the rider by absorbing and distributing forces effectively, enhancing rider control and comfort over rough terrain.

Implementation Method 1

a spring assembly arranged to provide a spring force between the counterweight and the guide assembly to resist linear motion of the counterweight along the guide assembly axis

Methodology Applied
Scientific EffectSpring force: Spring

Implementation Method 2

The counterweight and spring assembly may have a natural motion frequency of 3 to 15 Hertz

Methodology Applied
Scientific EffectNatural motion frequency: Harmonic Oscillator

Data Source

PatentUS12337926B2Method and apparatus for stabilizing front fork suspension of a bike
Publication Date: 2025.06.24 COUNTERSHOX LLC
  • US12337926B2 patent drawing
  • US12337926B2 patent drawing
  • US12337926B2 patent drawing

AI summary

A suspension stabilizer and method are described which may be attached to a bike having front fork suspension to improve handling and reduce rider fatigue. The suspension stabilizer may include a counterweight, a spring assembly and a guide assembly. The spring assembly may be arranged to provide a spring force between the counterweight and the guide assembly to resist linear motion of the counterweight along a guide assembly axis. The counterweight and spring assembly may have a natural motion frequency of 3 to 15 Hertz and may be based on one or more characteristics of the front fork suspension.