Magnetic position sensor
US6275025A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jan 14, 1999 |
| Grant date | Aug 14, 2001 |
| Priority date | — |
| Expiry date | Jan 14, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01D5/147
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The invention relates to a magnetic position sensor in which at least two stator elements are arranged in a magnetic field, a magnetic field probe being located in the air gap between the stator elements, a means that follows the movement of an object being arranged parallel to the plane spanned by the stator elements. In the case of a position sensor which is independent of axial play, the means connected to the movable object is of two-part design, each soft-magnetic part (4a, 4b) having at least one segment and the soft-magnetic elements being connected to one another rigidly in a manner displaced relative to one another, with the result that the segment of the first element (4a) is located opposite a segment gap in the second element (4b), the stator elements (2a, 2b) being arranged between the soft-magnetic elements (4a, 4b) and a magnet (3) that generates the magnetic field perpendicular to the plane spanned by the stator elements (2a, 2b) being arranged both between the stator elements (2a, 2b) and the soft-magnetic elements (4a, 4b).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.