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Vehicle wireless sensing and communication system

  • US 6,662,642 B2
  • Filed: 02/19/2002
  • Issued: 12/16/2003
  • Est. Priority Date: 09/08/2000
  • Status: Expired due to Fees
First Claim
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1. A valve stem assembly for a tire, comprising:

  • an elongate metallic valve stem;

    a body attached to a lower end of said valve stem; and

    a sensor unit arranged in said body, said sensor unit comprising a capsule having a chamber, a passageway for providing flow communication between said chamber and an interior of the tire and a plurality of SAW sensors arranged in said chamber.

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