Puncture Repair Kit Mixing Chamber for Uniform Air-Fluid Delivery

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Solution Overview

Problem

Conventional puncture repair kits may cause partial coagulation of puncture repair fluid due to uneven mixing of compressed air and fluid, leading to inefficiencies in puncture repair.

Innovation Solution

A puncture repair kit with a mixing device that includes a mixing chamber, a first inlet flow path connected to a compressed air source, a second inlet flow path for puncture repair fluid, and an outlet flow path, featuring specific openings and configurations to ensure uniform mixing and efficient discharge of the mixture.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Device complexity

If compressed air and puncture repair fluid are supplied through a single flow path, then the device structure is simplified, but the mixing becomes uneven causing partial coagulation of the fluid

Engineering Contradiction:
Improveflow path structureVSAvoidmixing uniformity
Core Design Contradiction:
Device complexityVSReliability

Solution Approach 1:

The single flow path is segmented into two separate inlet flow paths: a first inlet flow path for compressed air and a second inlet flow path for puncture repair fluid. This segmentation allows independent control of each fluid's flow, ensuring uniform mixing while maintaining relatively simple device structure.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

A mixing chamber is introduced as an intermediary component between the two inlet flow paths and the outlet. The mixing chamber provides a dedicated space where compressed air and puncture repair fluid can mix uniformly before being discharged, preventing partial coagulation while keeping the overall device structure manageable.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Productivity

If compressed air supply time is reduced, then puncture repair efficiency improves, but the puncture repair fluid may coagulate in the supply path

Engineering Contradiction:
Improvepuncture repair efficiencyVSAvoidfluid flow stability
Core Design Contradiction:
ProductivityVSReliability

Solution Approach 1:

The system performs preliminary mixing of compressed air and puncture repair fluid in the mixing chamber before discharge. This preliminary action ensures the fluid is properly mixed and pressurized in advance, allowing for faster discharge and repair while preventing coagulation during the supply process.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The dual flow path design enables continuous and stable supply of both compressed air and puncture repair fluid to the mixing chamber. This continuous supply ensures the fluid remains in motion and properly mixed, preventing coagulation while maintaining efficient repair operation.

Inventive Principle:
Principle #20Continuity of useful action

3Reliability

If the mixing chamber is made larger to improve mixing, then mixing uniformity improves, but the device size increases

Engineering Contradiction:
Improvemixing uniformityVSAvoiddevice size
Core Design Contradiction:
ReliabilityVSVolume of moving object

Solution Approach 1:

The mixing chamber is designed with optimized local geometry and flow path configuration to achieve effective mixing in a compact volume. The flow paths are arranged to create appropriate turbulence and mixing zones within the chamber, ensuring uniform mixing without requiring a large overall device size.

Inventive Principle:
Principle #3Local quality

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 kit efficiently repairs punctures by uniformly mixing and discharging the puncture repair fluid and compressed air, preventing coagulation and ensuring effective puncture repair even in low-temperature environments.

Implementation Method 1

a mixing device configured to be attached to the container to produce a mixture of the puncture repair fluid and the compressed air

Methodology Applied
Scientific EffectFluid mixing: Turbulence

Data Source

PatentEP4706948A1Puncture repair kit
Publication Date: 2026.03.11 SUMITOMO RUBBER INDUSTRIES LTD
  • EP4706948A1 patent drawingFigure 1
  • EP4706948A1 patent drawingFigure 2
  • EP4706948A1 patent drawingFigure 3

AI summary

A puncture repair kit (1) for repairing a puncture on an object includes a container (2) containing a puncture repair fluid (R), a compressed air source (3) for supplying compressed air, and a mixing device (4) configured to be attached to the container to produce a mixture of the puncture repair fluid and the compressed air. The mixing device includes a mixing chamber (5) for producing the mixture, a first inlet flow path (6) configured to be connected to the compressed air source, a second inlet flow path (7) for supplying the puncture repair fluid from the container to the mixing chamber, and an outlet flow path (8) for discharging the mixture from the mixing chamber. The first inlet flow path includes a first opening (6a) for supplying the compressed air to the container, and a second opening (6b) for supplying the compressed air to at least one of the mixing chamber and the second inlet flow path.