US 6,148,888 A · Method and system for measuring and adjusting pressure of tires

Abstract

Method and system for measuring and adjusting pressure of tires of vehicles in order to set the appropriate pressure to a tire when the latter is in temperature and pressure conditions different from nominal conditions, the method and system comprising the steps of measuring the pressure inside the tire, measuring the temperature inside the tire, calculating a pressure value equivalent to the nominal value as a function of said measured values, visualizing the measured values, introducing said values in an air supplying machines, and supplying said calculated pressure to the tire. They system for implementing said method comprises a thermocouple, a pressure tester provided with means in contact with the thermocouple, and an air supplying machine and a connector provided with means in contact with the thermocouple; or alternatively, the system comprises an emitting and sensing device arranged on the surface of the rim inside the tire, a remote control apparatus operating with radiofrequencies' signals and an air supplying machine.

Claims36

Dependent claims

A method for measuring and adjusting pressure of one or more tires intended to provide the tire with an appropriate pressure when the tire is under conditions of temperature and pressure unequal to nominal values of temperature and pressure which correspond to a temperature defined as ambient temperature, and a pressure defined as the appropriate pressure for the tire at ambient temperature while the tire is at rest, the method comprising the following steps:

measuring the pressure inside the tire;
measuring the temperature inside the tire;
calculating a pressure value equivalent to the nominal pressure as a function of said measured temperature value, said calculated equivalent pressure being an appropriate pressure for use in the tire at the measured temperature conditions;
displaying the measured temperature and pressure values, as well as the value of the pressure calculated as equivalent to the nominal as a function of said measured value of temperature;
introducing said calculated equivalent pressure value into an air supplying machine;
and
supplying said calculated equivalent pressure into the tire.

4 more elements

A system for measuring and adjusting pressure of tires, the system comprising:

A) a tire valve which incorporates a thermocouple for measuring a temperature inside the tire,
b) a pressure tester for measuring a pressure inside the tire, said pressure tester including a mouthpiece provided with a pressure inlet and contact means suitable for being connected to said thermocouple,
c) a processor adapted and configured for receiving a nominal pressure value of the tire at ambient temperature, and measured temperature and pressure values from the thermocouple and the pressure tester, and adapted and configured for calculating the pressure equivalent to the nominal pressure as a function of the measured temperature value, and
d) a pressured-air supplying machine, provided with a pneumatic inflating equipment associated to a hose for air passage, which ends at a connection mouthpiece provided with contact means suitable also for being connected to the tire valve thermocouple.

1 more element

A system for measuring and adjusting pressure of a tire, the system comprising:

a) at least one sensor and emitter device arranged on a rim surface inside the tire for measuring pressure and temperature values in the tire and emitting such information via radiofrequency signals,
b) at least one remote control apparatus arranged to receive radiofrequency signals,
c) a means for calculating an appropriate pressure equivalent for the tire as a function of the measured temperature, given a nominal pressure value of the tire at ambient temperature, and
d) a pressured-air supplying machine provided with a pneumatic inflating equipment associated to a hose for the passage of air, which ends at a connection mouthpiece.

1 more element

Dependencies are inferred from the claim text.

Method and system for measuring and adjusting pressure of tires

Life of this patent

Method and system for measuring and adjusting pressure of tires

Life of this patent

Abstract

Claims36