Patent ID: 7911332

Claim:
A method of controlling an inner pressure of a tyre mounted on a rim, comprising the steps of: inflating an inner volume of the tyre to an operating pressure and at a reference temperature; admitting a fluid compressed to a first pressure into a tank associated with the rim, said first pressure being higher than the operating pressure of the tyre at the reference temperature; establishing a communication between the inner volume of said tyre and said tank when the inner pressure of said tyre is lower than said operating pressure; and stopping the communication between said inner volume and said tank when said inner pressure of the tyre is substantially equal to said operating pressure, wherein said step of establishing a communication between the inner volume of the tyre and the tank is carried out by at least one valve assembly comprising a command valve, an exhaust valve and a compensation valve operatively associated with each other and comprising the steps of: transmitting a pressure reduction of the tyre to the exhaust valve; and generating a pressure reduction within the command valve through the exhaust valve so as to operate the command valve and bring said inner pressure to a value substantially equal to the operating pressure; said step of stopping said communication comprising the steps of: transmitting the inner pressure of the tyre, substantially equal to the operating pressure, to the exhaust valve and the compensation valve; and generating a pressure increase within the command valve through the compensation valve so as to operate the command valve to stop said communication.