Tire pressure monitoring system

Details Tire pressure monitoring system Tire pressure monitoring system

1985-04-18

1989-03-28

Swann, III, Glen R.

Communications: electrical

Land vehicle alarms or indicators

Internal alarm or indicator responsive to a condition of the...

731468, 340529, 340539, B60C 2300, G08B 108

Patent

active

048168025

ABSTRACT:
A tire pressure monitoring system for a tractor-trailer type vehicle includes a series of sensors on each of the wheels of the vehicle. When a low pressure condition occurs, the sensor activates a radio frequency transmitter for delivering a low power FM signal to a receiver on the tractor. A delay circuit is incorporated in the receiver to require that the signal from the transmitter last for a predetermined duration prior to energizing an indicator in the tractor. The receiver antenna is preferably mounted on the bottom of the tractor in a plane including the trailer wheels.

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