PRESSURE SENSING VALVE CAP THAT PERMITS THE PASSAGE OF AIR

摘要

A cap connectable to the valve stem of an inflatable body such as a tire of a vehicle. The cap is in two threadable parts (22, 24) and with another valve (42), so that it is not necessary to remove it. An inside lateral underpressure switch (72, 74) with a membrane (70) and plate (66) activates an inside transmitter (16) with battery (80) for remote alarm.