| 摘要 |
A tire valve-gauge combination utilized to inflate and deflate conventional tubed or tubeless tires while giving the user an indication of the amount of air pressure within the tire's chamber. The accessory device of the present invention comprises; a flexible rim-attaching base having a larger lower body portion than the rim perforation of a conventional tire and a central neck portion having an outside diameter equal or lesser than said rim perforation, a rigid gauge portion having a transparent molded tube-like form imprinted with markings identifying the location of a moveable luminescent indicator adapted to travel longitudinally within said gauge portion, a cap base portion adapted to securedly attach to the upper portion of the gauge portion and slidably communicating with a cap portion. Therefore, when a tire is under pressure, the inner air pressure exerts positive pressure against the under side of the piston, which in turn, displaces the location of said indicator, indicating the tire's air pressure.
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