Tire pressure warning apparatus

Details Tire pressure warning apparatus Tire pressure warning apparatus

1975-09-24

1978-02-07

Yusko, Donald J.

Communications: electrical

Selective

Having indication or alarm

731465, 200 6122, B60C 2302

Patent

active

040729265

ABSTRACT:
An apparatus which is responsive to fluid pressure for detecting and indicating visually and accoustically the variation of pressure conditions such as the underinflation of vehicle tires. The apparatus comprises pressure sensors, annular conductive members, at least a pair of confronting heads, response means and indicating means. When the tire air pressure is normal, since the impedance value of the conductive members does not vary, the indicating device is not actuated. However, if the air pressure within even one of the tires becomes abnormal, the apparatus performs as designed and a signal emitted by the indicating device informs the driver of the abnormality.

REFERENCES:
patent: 3155938 (1964-11-01), Meyers
patent: 3161387 (1964-12-01), Jutier
patent: 3602884 (1971-08-01), Brumbelow
patent: 3614732 (1971-10-01), Lejeune
patent: 3662335 (1972-05-01), Fritze
patent: 3805185 (1974-04-01), Kishi et al.
patent: 3922639 (1975-11-01), Shimahara et al.
patent: 3990041 (1976-11-01), Blanchier
patent: 4006449 (1977-02-01), Sumi

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