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Sensor, drive force auxiliary device using the sensor, and torque sensor zero point adjusting mechanism of the drive force auxiliary device

  • US 6,163,148 A
  • Filed: 04/30/1997
  • Issued: 12/19/2000
  • Est. Priority Date: 10/17/1995
  • Status: Expired due to Term
First Claim
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1. A sensor provided with a magnet and a magnetic detecting element comprising:

  • a detection shaft,a detection disc which is fixed to the detection shaft,a magnetic piece which is fixed to the outer circumference edge of the detection disc,a yoke which is disposed to hold the magnetic piece in a predetermined shaped gap, andthe magnet and the magnetic detecting element both fixed to the yoke, wherein the magnet and the magnetic detecting element are fixed with a predetermined distance between them, the magnetic piece passes through the predetermined shaped gap having the predetermined distance during the rotation of the detection disc, and the magnetic piece has a shape of a circular arc, the radius of the circular arc being increased or decreased gradually along the outer circumference edge of the detection disc.

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