Device for monitoring the air-pressure in pneumatic tires fitted on vehicle wheels
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United States of America Patent
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-
Feb 11, 1997
Grant Date -
N/A
app pub date -
Nov 23, 1993
filing date -
Feb 26, 1992
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A device for monitoring the air pressure in pneumatic tires comprises a transmitting device fitted to each wheel of a vehicle and rotating with it, and a receiver which is built into the vehicle or accommodated in a separate housing. The transmitting device mounted in the wheel comprises a pressure gauge for measuring the tire pressure, a transmitter and a signal generator which generates an identification signal unique to each transmitter and transmitted before or after the pressure signal. The receiver processes received signals only when the identification signal received matches a reference identification signal stored in the receiver. This facilitates reliable operation of the monitoring device and prevents false alarms.
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