Valve cap pressure drop indicator

Details Valve cap pressure drop indicator Valve cap pressure drop indicator

B - Operations, Transporting

60

C

152/176, 116/67.

B60C 23/02 (2006.01) B60C 23/00 (2006.01) G01L 17/00 (2006.01) G01L 19/12 (2006.01)

Patent

CA 2033926

ABSTRACT OF THE DISCLOSURE A tire pressure indicator for visual observation of tire pressure including a screw-on cartridge containing a spring- biased piston with a movable shield which covers a central indicator pilot when tire pressure is Up to requirements. When pressure is below what it should be, the piston retracts to allow the shield to expose the indicator pilot to the view of an observer, thus serving as a warning that inflation is required. The cartridge is composed of three elements: a screw on base, intermediate element and a transparent sealed top cap. A cup- shaped vessel is movable in the intermediate and top cap sections in response to a subjacent diaphragm and pressure in the tire.

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