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Speed, spin rate, and curve measuring device using magnetic field sensors

  • US 6,151,563 A
  • Filed: 09/15/1999
  • Issued: 11/21/2000
  • Est. Priority Date: 01/14/1998
  • Status: Expired due to Term
First Claim
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1. A measuring device secured to a movable object, said measuring device comprising:

  • a first magnetic field sensor for providing an output indicative of a change of alignment between said movable object and the earth'"'"'s magnetic field;

    an electronic processor circuit connected to said output of said first magnetic field sensor, wherein said electronic processor circuit determines motion characteristics of said movable object from said output of said first magnetic field sensor; and

    an output display connected to said electronic processor circuit, for displaying said motion characteristics determined by said electronic processor circuit.

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