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External pressure display for vehicle tires

  • US 20020101339A1
  • Filed: 08/10/2001
  • Published: 08/01/2002
  • Est. Priority Date: 08/30/2000
  • Status: Active Grant
First Claim
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1. A method for displaying magnitude changes of a property within an enclosed vessel externally, comprising the steps of:

  • (a) mounting a magnetic field source for rotation within the vessel providing a magnetic field having an axis of symmetry rotating in a particular plane;

    (b) rotating the magnetic field source in opposite directions responsive to increasing and decreasing changes in magnitude of the property within the vessel, respectively;

    (c) passively sensing orientation of the axis of symmetry of the magnetic field source outside the vessel with a planar display located in a plane parallel and proximate to the plane of rotation of the magnetic field source, the planar display having a plurality of pixels formed by magneto-optic materials each providing a visual effect representative of orientation of the axis of symmetry of the magnetic field; and

    (d) correlating the orientation of the axis of symmetry of the magnetic field sensed to increases and decreases in magnitude of the property within the vessel.

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