External mount tire pressure sensor system

Details External mount tire pressure sensor system External mount tire pressure sensor system

2005-11-01

2005-11-01

Oen, William (Department: 2855)

Measuring and testing

Tire, tread or roadway

C073S146200

Reexamination Certificate

active

06959594

ABSTRACT:
An external mount tire pressure sensor system with a stretch sensor having a variable resistance longitudinal displacement characteristic. The stretch sensor is coupled to a processor which samples the resistance of the stretch sensor periodically. The sensor body is attached to the external side wall of a pneumatic tire so that the body is displaced by the tire side wall and the resistance is a function of internal tire pressure. When the processor determines that the pressure is below a threshold value, an r.f. generator is activated by the processor to generate a low tire pressure signal. This signal is converted by a receiver to a warning for the driver.

REFERENCES:
patent: 3697944 (1972-10-01), Murano
patent: 5838229 (1998-11-01), Robinson, III
patent: 6293140 (2001-09-01), Lohberg

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