A tire inflation pressure sensor mounted on the outside of the wheel. The sensor housing includes a diaphragm, a cylinder, a magnet holder, a spring, a magnet holding member connected with a magnet, a guide member and a stopper. When the inflation pressure of a tire is normal, the magnet holding member...http://www.google.fr/patents/US5526861?utm_source=gb-gplus-shareBrevet US5526861 - Inflation pressure sensor for automobile pneumatic tire
Inflation pressure sensor for automobile pneumatic tire
