Tire pressure detecting apparatus and monitoring apparatus

Details Tire pressure detecting apparatus and monitoring apparatus Tire pressure detecting apparatus and monitoring apparatus

1997-08-13

1998-09-29

Oen, William L.

Measuring and testing

Tire, tread or roadway

Tire inflation testing installation

B60C 2302

Patent

active

058147250

ABSTRACT:
A tire pressure detector of an automobile, comprises a magnet having N and S poles and rotated in accordance with a pneumatic pressure in a tire, the N and S poles being rotatable in reverse, detecting means, arranged opposite to the magnet, for detecting magnetism and outputting a voltage signal changed to different magnetism level in accordance with rotation of the magnet, and determining means for comparing the voltage signal with a positive or negative threshold value and determining whether the pneumatic pressure in the tire is within a suitable range, based on a polarity of the voltage signal represented by a comparison result.

REFERENCES:
patent: 3828309 (1974-08-01), Yamasaki et al.
patent: 4177671 (1979-12-01), Ichihara et al.
patent: 4208649 (1980-06-01), Sarides
patent: 4238955 (1980-12-01), Reinecke
patent: 4866982 (1989-09-01), Gault
patent: 4953394 (1990-09-01), Franke et al.
patent: 5542293 (1996-08-01), Tsuda et al.
Uemura, Y, et al., Tire Pressure Warning System, Report on the Tenth International Technical Conference on Experimental Safety Vehicles, Jul. 1-4, 1985.

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