Tire pressure monitoring system

Communications: electrical – Selective – Having indication or alarm

Patent

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Details

200 6125, 307116, 340 52F, 340521, B60C 2302, G08B 2300

Patent

active

041480082

ABSTRACT:
A system for monitoring tire pressure preferably at each and every tire to provide an indication of low, unsafe pressure to the operator of the vehicle. The system can be used in pleasure vehicles or commercial trucks and basically comprises a sensor unit mounted to the tire rim including an actuating switch and coupling coil, and a detector unit physically unattached to the sensor unit and also including a coupling coil and associated detecting and indicating circuitry. The sensor unit rotates with the tire and rim while the detector unit, which is preferably mounted to the brake shoe, is stationary enabling inductive coupling between sensor and detector units once each revolution of the wheel of the vehicle. The sensor unit is secured to the inner surface of the rim and is compressable to operate the actuating switch. The detector unit may be powered directly from the vehicle storage battery or may tie into an existing diagnosis system of the vehicle.

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