Communications: electrical – Land vehicle alarms or indicators – Internal alarm or indicator responsive to a condition of the...
Reexamination Certificate
2005-09-20
2005-09-20
Lieu, Julie Bichngoc (Department: 2636)
Communications: electrical
Land vehicle alarms or indicators
Internal alarm or indicator responsive to a condition of the...
C340S442000, C340S443000, C073S146000, C073S146300, C073S146500
Reexamination Certificate
active
06946954
ABSTRACT:
A device for monitoring air pressure in the tires of a vehicle includes devices for determining the wheel speed or other characteristic variables for the speed of the tires of the vehicle, a device for calculating differential variables on the basis of the wheel speed variables, a device for evaluating the differential variables with respect to a setpoint value deviation and for generating a warning signal if the setpoint value deviation exceeds a threshold value, and a device for directly measuring the air pressure in the tire of a wheel and for transferring an air pressure characteristic variable to the evaluation device. A warning signal is generated if the deviation of the air pressure characteristic variable with respect to a setpoint value exceeds a corresponding threshold value. A method of monitoring tire pressures is also provided.
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Anonymous: “Lower Cost Method to Monitor Tire Inflation Pressure for Extended-Mobility Tires”, Mar. 1998, XP-000773835.
Piëch Ferdinand
Reinke Rolf
Wegner Berend
Beck Manfred
Greenberg Laurence A.
Lieu Julie Bichngoc
Stemer Werner H.
Wolkswagen Aktiengesellschaft
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