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WHEEL SPEED SENSOR

  • US 20090051349A1
  • Filed: 07/07/2008
  • Published: 02/26/2009
  • Est. Priority Date: 07/05/2007
  • Status: Active Grant
First Claim
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1. A rotation sensor assembly, comprising:

  • a bearing including;

    a first race having an outer edge,a second race,a plurality of ball bearings positioned between the first race and the second race,a carrier coupled to the second race and constructed of a material having a relatively high permeability, anda tone wheel coupled to the carrier, the tone wheel including a plurality of magnetic pole pairs distributed around a circumference of the tone wheel;

    a spacer abutting the first race; and

    a sensor mounted to the spacer and positioned adjacent the tone wheel, wherein the sensor is configured to sense rotation of the tone wheel relative to the sensor by sensing the magnetic pole pairs during said rotation.

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