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Pressure sensing apparatus for tire

  • US 20080121031A1
  • Filed: 11/28/2006
  • Published: 05/29/2008
  • Est. Priority Date: 11/28/2006
  • Status: Abandoned Application
First Claim
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1. A pressure sensing apparatus comprising:

  • a pressure sensor for detecting tire pressure and generating a signal corresponding to the tire pressure;

    an air valve seat made of an electrically conducting material and electrically connected to the pressure sensor, the air valve seat having an air passage extending through two distal ends thereof; and

    a transmitting antenna having a cap made of a metal material and connected to the air valve seat, at least one substrate having an annular shape defining a center coupling hole coupled to the cap, and at least one metal conducting wire spirally mounted in the at least one substrate around the center coupling hole, the at least one metal conducting wire each having an inner end exposed to a periphery wall of the center coupling hole of the at least one substrate and electrically connected to the cap.

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