Inductive torque sensor
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United States of America Patent
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Issued Date -
Jul 6, 2006
app pub date -
Nov 18, 2005
filing date -
Nov 19, 2004
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
In an inductive torque sensor, two rotatable rotor elements (114a, 114b) are mounted axially and adjacent at a distance from the shaft components (112a, 112b) of a shaft (112). An inductive coupling element (18) is mounted about the circumference of each of the rotor elements (114a, 114b). An inductive circuit (30) with at least two inductors (34a, 34b, 34) on a stator element (120) extends along a sensor area so that, when the rotor elements (114a, 114b) rotate, the inductive coupling elements (18) are displaced along the inductors (34, 34a, 34b), causing a position-dependent inductive coupling between the inductors. Cost-effective manufacture is possible if the inductive circuit (30) is so mounted that with the inductive coupling element (18) it covers both rotor elements (114a, 114b). The inductive coupling elements (18) thus possess distinguishable inductive coupling characteristics.
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