Tire air pressure system

Details Tire air pressure system Tire air pressure system

1994-11-14

1996-02-13

Swarthout, Brent A.

Communications: electrical

Land vehicle alarms or indicators

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

340443, 731465, 116 34R, 200 6122, B60C 2300

Patent

active

054914655

ABSTRACT:
A tire air pressure system is disclosed for continuously monitoring the pressure of air in an inflatable tire of a vehicle or aircraft, and activating an audio and/or visual alarm when the air pressure drops below a predetermined level. An electrically conducting sensor is attached to a tire valve stem, and a decrease in air pressure causes a normally electrically insulated, spring biased piston to contact the sensor, thereby grounding the piston. The piston is electrically connected to an insulated disk having a conducting ring, mounted between a wheel and a hub. A contact brush disposed at the ring is connected to an alarm maintained at positive potential.

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patent: 5025244 (1991-06-01), Huang
patent: 5130694 (1992-07-01), Zainaleian
patent: 5289161 (1994-02-01), Huang
patent: 5349328 (1994-09-01), Lonzaine

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