Central tire inflation system
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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-
Sep 10, 1996
Grant Date -
N/A
app pub date -
Dec 14, 1994
filing date -
Dec 14, 1994
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An improved central tire inflation system wherein positive air pressure is used to control the air pressure in the associated vehicle tire includes a vehicle wheel assembly having a tire mounted thereon and defining a pressurized tire air chamber, and a positive pressure air source. A normally closed inflation valve is connected between the tire air chamber and the positive pressure air source, and a normally closed deflation valve is connected between the tire air chamber and the atmosphere. A control valve selectively actuated by a central control unit is provided to operatively connect the inflation valve and the deflation valve to the positive pressure air source. The system further includes a sensor for measuring the tire pressure in the tire air chamber. The sensor is operative to generate a signal corresponding to the air pressure in the tire air chamber to the central control unit. In operation, the inflation valve is responsive to an air actuation signal at a selected positive pressure for moving the inflation valve to an open position to thereby increase the air pressure in the tire air chamber, and the deflation valve is responsive to an air actuation signal at a selected positive pressure for moving the deflation valve to an open position to thereby decrease the air pressure in the tire air chamber.
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