TIRE TEMPERATURE INDICATOR
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United States of America Patent
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Issued Date -
Jul 18, 2019
app pub date -
Aug 29, 2017
filing date -
Aug 29, 2017
priority date (Note) -
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Abstract
A tire having an indicator device that visually indicates exposure of the tire to a pre-selected temperature is provided, and an indicator device that may be positioned on a tire, for indicating that the tire has been exposed to a pre-selected temperature. The device includes expandable graphite dispersed within a pouch or binder. Also described is a method for detecting that a tire has been exposed to excessive temperature. The method includes providing a tire that includes at least one indicator device that contains a pouch or binder and expandable graphite dispersed in the pouch or binder. Visual inspection of the tire to detect a change in the appearance, shape, volume or texture of the indicator device can indicate that the tire has been exposed to a temperature that meets or exceeds a pre-selected temperature.
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