Tire Repair Patch Color Indicators for Accurate Degradation Detection
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Solution Overview
Problem
Existing technologies for determining the degradation state of tires are not accurate enough to serve as an objective index, as they rely on pre-printed expiration dates that do not reflect the actual degradation state of the tire or its rubber components.
Innovation Solution
A repair patch, pre-cured tread, and tire with an indicator portion that includes color components sensitive to degradation factors, which can be analyzed by a degradation state determination apparatus using a model and database to assess the tire's degradation state with high accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a pre-printed expiration date is used to indicate tire degradation, then the implementation is simple, but the measurement precision of the degradation state is insufficient
Solution Approach 1:
The patent applies color change indicators that respond to degradation factors such as UV exposure, heat, and oxidation. The indicator portion contains multiple color patterns with different sensitivities to various degradation factors, allowing the degradation state to be visually detected through color changes. This resolves the contradiction by providing accurate degradation measurement while maintaining simple implementation through visual indicators.
Solution Approach 2:
The patent utilizes changes in color parameters (hue, saturation, brightness) of the indicator materials in response to degradation factors. By monitoring these parameter changes, the system achieves precise degradation state measurement. The indicator portion is designed with materials whose optical parameters change predictably under degradation conditions, enabling accurate assessment without complex manufacturing.
2Measurement precision
If multiple colors with different sensitivities are applied to the indicator portion, then the degradation state determination accuracy is improved, but the device complexity increases
Solution Approach 1:
The patent divides the indicator portion into multiple color patterns, each with different sensitivities to specific degradation factors. This segmentation allows the system to detect different aspects of degradation independently. The indicator portion is structured with distinct color regions that can be analyzed separately, improving measurement precision while keeping each individual color pattern relatively simple.
Solution Approach 2:
The indicator portion serves multiple functions simultaneously by incorporating colors with different sensitivities. A single indicator component performs the work of multiple separate indicators by using color combinations that respond to various degradation factors (UV, heat, oxidation). This multi-functionality improves degradation state determination accuracy without proportionally increasing device complexity.
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 proposed solution enables the determination of a tire's degradation state with high accuracy, allowing for more informed decisions regarding tire maintenance, replacement, or retreading.
Implementation Method 1
at least one color pattern having a plurality of colors applied to different positions, the plurality of colors having different sensitivities to a degradation factor
Implementation Method 2
the plurality of colors having different sensitivities to a degradation factor
Data Source
AI summary
A repair patch (70) is a repair patch to be attached to a tire and includes an indicator portion (31a) having color components to be extracted by a degradation state determination apparatus that includes a degradation state model and a color change database for determining a degradation state of the tire. The repair patch also includes a reinforcement portion (71) to be bonded to the tire to reinforce the tire. The indicator portion includes a medium layer having printed thereon an identifier and a color pattern having a plurality of colors applied to different positions, the plurality of colors having different sensitivities to a degradation factor.