| 摘要 |
PURPOSE: A tire easily detects crack occurring outside and inside thereof to prevent accident due to the rupture thereof. CONSTITUTION: A conductor(1) is buried in a tire(100). The conductor(1) may be made of not only any kind of metal but also any compound conducting electricity. Both terminals(10, 11) of the conductor(1) are placed near each other. If the resistance detected in the terminals(10, 11), a specific part of the conductor(1) is excessively deformed, which means that the tire(100) gets tired. If the detected resistance is extremely large or infinite, the conductor is cut, which means that a crack occurs on the tire(100).
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