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Air pressure detection device for wheel

  • US 6,838,984 B2
  • Filed: 01/24/2002
  • Issued: 01/04/2005
  • Est. Priority Date: 01/24/2001
  • Status: Expired due to Fees
First Claim
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1. An air pressure detection device for a wheel comprising:

  • an air pressure sensor for detecting the air pressure of a tire tube;

    a transmission unit for transmitting information detected by said air pressure sensor; and

    an electric cell for driving said transmission unit;

    wherein said air pressure sensor and said transmission unit are adapted to be located inside a tire tube and are integrally mounted on an air valve of a wheel, and said electric cell is mounted directly on a wheel rim of a wheel in such a manner as to surround a portion of said air valve projecting from the wheel rim of the wheel.

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