| 摘要 |
Device for displaying a deviation in the pressure of a pneumatic tyre from a prescribed value, having a mounting element which can be connected to the valve and has a cast-off element which in the event of undershooting of a prescribed tyre pressure separates from the mounting element but remains connected to the mounting element via a string or a chain and thus generates acoustic signals upon rotation of the wheel in order to display a tyre overpressure due to an increase in temperature is provided outside the tread with a pocket which is filled with a liquid which evaporates at the increased temperature. Upon evaporation of the liquid, the pocket is deformed in such a way that a pocket region having at least one plastic or metal element projects over the tread and comes into contact with the road surface.
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