Retread Tire RFID Placement for Retreading Durability

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Solution Overview

Problem

There is a need to improve the usefulness of tires by embedding a communication device in a position that considers the retreading process.

Innovation Solution

A retreaded tire with a communication device, such as an RFID tag, is embedded at specific positions within the tire structure that avoid interference and damage during retreading, ensuring continuous use and improved maintainability.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If a communication device is embedded in a tire, then the tire's functionality and traceability are improved, but the device may be damaged or interfered with during retreading processes

Engineering Contradiction:
Improvetire functionalityVSAvoidcommunication device reliability
Core Design Contradiction:
Adaptability or versatilityVSReliability

Solution Approach 1:

The patent positions the communication device in the radial direction between the tread and belt layers, and in the width direction outside the tread width, creating a three-dimensional placement that avoids interference from retreading operations while maintaining tire functionality

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

Solution Approach 2:

The communication device is embedded in the green tire before the tread is attached, allowing the device to be positioned in a protected location that avoids damage during subsequent retreading processes

Inventive Principle:
Principle #10Preliminary action

2Stability of the object's composition

If a communication device is embedded in a tire at a conventional position, then the tire structure is maintained, but the device cannot withstand retreading processes

Engineering Contradiction:
Improvetire structureVSAvoidretreading compatibility
Core Design Contradiction:
Stability of the object's compositionVSAdaptability or versatility

Solution Approach 1:

The patent specifies precise positional coordinates for the communication device in both radial and width directions, placing it in a region that maintains tire structural integrity while being excluded from retreading operation zones

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

Solution Approach 2:

The patent creates a localized protected region for the communication device by positioning it outside the tread width and between specific radial layers, giving this local area different functional properties (protected vs. processed)

Inventive Principle:
Principle #3Local quality

3Ease of operation

If the communication device is positioned close to the tread surface, then it is easily accessible, but it is vulnerable to damage during retreading

Engineering Contradiction:
Improvedevice accessibilityVSAvoidretreading damage
Core Design Contradiction:
Ease of operationVSObject-affected harmful factors

Solution Approach 1:

The patent uses three-dimensional positioning with the device located between the tread and belt layers radially, and outside the tread width laterally, creating spatial separation from harmful retreading operations while maintaining operational accessibility

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

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 communication device remains functional and easily maintainable throughout multiple retreading cycles, enhancing the tire's usefulness and productivity.

Implementation Method 1

a communication device (RFID tag) is embedded in a tire

Methodology Applied
Scientific EffectElectromagnetic radiation: Electromagnetic Induction

Data Source

PatentEP4364970B1Retread tire and retread tire manufacturing method
Publication Date: 2025.12.31 BRIDGESTONE CORP
  • EP4364970B1 patent drawingFigure 1
  • EP4364970B1 patent drawingFigure 2
  • EP4364970B1 patent drawingFigure 3

AI summary

A tire comprises: a belt composed of one or more belt layers; a main groove on a tread surface; and a communication device embedded at a position that is inward in a tire radial direction from a groove bottom of the main groove, outward in the tire radial direction from an inner surface of an innermost belt layer in the belt, and outward in a tire width direction from a minimum width belt layer in the belt, wherein a tire radial outer side of the communication device is not covered with the belt.