Patent ID: 6100798
Filing Date: 2000-08-08
Classification: B60C

Abstract:
A tire pressure detecting/warning apparatus, comprising:a main body adapted to be mounted to a tire valve of a tire of a vehicle, said main body including a first air passage and a second air passage;a first contact and a second contact;a first reed mounted on said first air passage and not in electrical contact with said first contact when a tire pressure of said tire is within a predetermined safety range between a relatively higher value and a relatively lower value, said first reed being deformed to be in electrical contact with said first contact when said tire pressure is higher then said relatively higher value of said predetermined safety range;a second reed mounted on said second air passage and in electrical contact with said second contact when said tire pressure of said tire is within said predetermined safety range, said second reed being deformed to be disengaged from said second contact when said tire pressure is lower than said relatively lower value of said predetermined safety range, wherein said first reed and said second reed are integrally made of conductive material and said first reed has a thickness greater than that of said second reed;a radio-transmitting device mounted in said main body for transmitting a first signal representing insufficient pressure of said tire when said second reed disengages from said second contact and for transmitting a second signal representing overpressure of said tire when said first reed engages with said first contact;a receiver for receiving said first signal and said second signal from said radio-transmitting device; anda siren for generating different warning sounds and lamp indications in response to said first signal and said second signal received by said receiver.