Patent · US Expired

Multi-turn, non-contacting rotary shaft position sensor

US6411082B1 · kind B1 · utility

22Cited by
26References
25Claims
0Family size

Assignee

Inventor

Key dates

Filing dateFeb 16, 2001
Grant dateJun 25, 2002
Priority date—
Expiry dateFeb 16, 2021

Classification

  • Technology area (CPC G)Physics
  • CPC primaryG01D2205/26
  • WIPO fieldMeasurement
  • WIPO sectorInstruments

Abstract

A multi-turn non-contacting rotary shaft position sensor that determines a positional parameter of a rotating shaft. The sensor converts the rotational movement of an input shaft to a linear translational movement of a magnetic element. A magnetically sensitive sensor is provided in a fixed location in close proximity to the magnetic element within the flux field of that magnetic element. As the input shaft rotates, the magnetic element moves along that linear path toward or away from the magnetically sensitive sensor so that the sensor detects the change in the magnetic flux imposed by the magnetic element. That change in magnetic flux is used to determining a positional parameter of the input shaft.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.