In a tire valve suitable for detecting the pressure and temperature in a tire, the strain of the tire wheel and the like, a conductive core body of a valve core is electrically insulated from a conductive shaft, and, to a pedestal having a 1st electrode electrically shaft and a 2nd electrode electrically...http://www.google.es/patents/US4998092?utm_source=gb-gplus-sharePatente US4998092 - Tire valve
