Patent ID: 7549329

Claim:
A tire pressure detecting valve stem comprising: a case being rectangular and having an inner surface having a bottom surface; and an annular surface surrounding and being perpendicularly formed around the bottom surface; an outer surface; and an air outlet hole being formed through the annular surface of the inner surface; a body being a valve stem, being integrally and transversely mounted on the case and having an outer section having an air passage being coaxially formed through the outer section; an inner section being integrally and coaxially formed on the outer section, being integrally and transversely mounted in the case and having an outlet hole being formed in the inner section, communicating with the air passage and corresponding to and communicating with the air outlet hole; and a center pin being conductive and being coaxially mounted on the inner section and protruding from the inner surface; and a tire pressure detector being mounted on the inner surface of the case and having an electrical module being a tire pressure detecting module comprising electronic devices being electronically mounted on a printed circuit board (PCB), instantaneously detecting tire pressures, being electronically mounted with the center pin, sending wireless signals corresponding to the tire pressure, being located on the inner surface of the case and having an antenna hole being formed through the PCB of the electrical module and mounting around the center pin; and a battery being mounted on the inner surface and being electronically connected to the electrical devices of the electrical module via the PCB.