Patent ID: 7565832

Claim:
A tire pressure monitor for mounting on the stem of a tire, comprising: a one-piece electrically conductive housing body with a protruding annular body, the protruding annular body having an outer thread at the outer wall thereof, the housing body having a loading portion formed therein and an air intake mouth, the air intake mouth having a lateral separating seat therein, the lateral separating seat being defined with a central hole, a valve nozzle device having an center throughhole and extending upwardly through said central hole of said separating seat, the air intake mouth being for mounting to a tire valve stem; a cover having a sleeve portion, the sleeve portion having an inner thread in the inner wall thereof for threadedly engaging with the outer thread of the protruding annular body, an internal space enveloped by the cover and the electrically conductive housing forming an airtight chamber for receiving the following parts: a battery device disposed at the top surface of the loading portion of the electrically conductive housing, the battery device including a positive pole and a negative pole, and the negative pole of the battery device being in contact with the loading portion whereby the housing body has a negative polarity; an insulating sleeve disposed between a periphery of the battery device and an inner wall of the housing body; a PCB disposed at the top surface of the protruding annular body of the electrically conductive housing, the PCB including a positive pole and a negative pole, the negative pole of the PCB contacting with the protruding annular body and then connecting with the negative pole of the battery device through the loading portion and the protruding annular body of the electrically conductive housing, and, the PCB having a pressure and temperature detecting device, a microprocessor, a transmitter; and a first electrically conductive resilient member disposed between the PCB and the battery device, and the positive pole of the battery device connecting with the positive pole of the PCB through the first electrically conductive resilient member.