Low pressure indicating device for a pneumatic tire

Details Low pressure indicating device for a pneumatic tire Low pressure indicating device for a pneumatic tire

G - Physics

01

L

G01L 17/00 (2006.01)

Patent

CA 2042966

ABSTRACT OF THE DISCLOSURE An apparatus adapted to be directly connected to the valve stem of an automobile tire to indicate a low pressure condition, comprises a bulb, cell device and compression spring switch assembly uniquely responsive to a low pressure condition in the tire for operating the switch assembly thereby connecting an electrical circuit to energize the bulb. The apparatus also includes a diaphragm and a special method of varying the over all volume of the diaphragm. The apparatus can be adjusted in advance to light the bulb when a selected pressure is detected a low pressure than the predetermined pressure.

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