VEHICLE PNEUMATIC TYRE AIR PRESSURE DYNAMIC CONTROL DEVICE Russian patent published in 1999 - IPC

FIELD: automotive industry and other branches of industry where tyre air pressure control is required. SUBSTANCE: device cap to be turned onto tyre valve instead of standard cap, and body in hole of which bushing with head to force off tyre valve core pin is fitted. Bushing is furnished with air filter. Body accommodates threshold pressure sensor with diaphragm and switching unit and passive transponder. If tyre pressure is normal, diaphragm is curved, contact of switching unit is closed and transponder takes up radio frequency signals from installed on vehicle base. If tyre pressure has dropped below tolerable limit, diaphragm straightens out, contact of switching unit opens, and transponder stops responding. No response is detected by information reception unit, and warning signal is sent to driver. Proposed device is notable for higher operation reliability. Its mounting does not require modifications. EFFECT: facilitated control of tyre air pressure. 6 cl, 1 dwg