Patent ID: 8726742
Filing Date: 2014-05-20
Classification: G01L

Abstract:
1. A torque sensor, comprising: a first rotor comprising a plurality of plates coupled together, the plurality of plates forming a first rotor body that has an inner circumferential surface and an outer circumferential surface and that defines a plurality of apertures that extend through the first rotor body inward from the outer circumferential surface; a plurality of bar magnets disposed in the plurality of apertures, each aperture of the plurality of apertures having a respective bar magnet of the plurality of bar magnets therein; a second rotor defining an interior region, the first rotor being rotatably disposed in the interior region, the second rotor having a plurality of tooth members extending radially toward the first rotor; and first and second Hall effect sensors disposed in an open region of the second rotor proximate to the first rotor, the first and second Hall effect sensors generating first and second signals, respectively, indicative of an amount of torque applied between the first and second rotors.