| 摘要 |
A pressure indicating device of a tube-less tire of a motor vehicle is on a position surrounded by the tire and faced outward for ease of reading. The device comprises an integral pipe formed in a rim being in communication between the device and the tire so that the pressure of the tire is represented on the device by communicating air through the pipe. Hence, before starting the vehicle, the driver may know the condition of each tire by visually inspecting a reading of the pressure indicating device. Once the reading of one device is abnormal, the driver can take a suitable action, i.e., replacing tire, accordingly.
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