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Pressure sensor

  • US 4,768,375 A
  • Filed: 03/03/1987
  • Issued: 09/06/1988
  • Est. Priority Date: 07/03/1985
  • Status: Expired due to Fees
First Claim
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1. A pressure sensor arrangement for detecting the air pressure of a tubeless tire mounted on the rim of a wheel of a motor vehicle, the rim having a drum-like base bounded by two rim flanges, each of the rim flanges having a radial outer portion on which the radial inner edge of the tire is seated and a radial or approximately radial inner portion adjacent said base, said radial inner portion and said base both being exposed to the interior of the tire, the pressure sensor arrangement comprising:

  • bore means formed in one of said radial inner portions so as to communicate with the interior of the tire;

    a sensor unit including a housing fixedly mounted in said bore means;

    said housing having a recess formed therein so as to face into the interior of said tire;

    a substrate seated in said recess and having a central bore formed therein;

    fixing means for extending through said bore and into said housing for attaching said substrate thereto; and

    ,at least one pressure sensor mounted on the outer region of said substrate.

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