Magnetic position sensor with hall probe formed in an air gap of a stator
US5789917A · kind A · utility
60Cited by
2References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 1, 1995 |
| Grant date | Aug 4, 1998 |
| Priority date | — |
| Expiry date | Feb 1, 2015 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01P3/487
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A magnetic position sensor having a thin tubular-shaped permanent magnet that is integral with a coupling shaft. The permanent magnet is mobile in rotation in a main air gap between two parts made of a soft magnetic material. One of the parts is formed by a stator having a secondary air gap in which a Hall probe is housed. The stator is placed coaxially on the inside of the tubular-shaped permanent magnet, with the other magnetic part including a coaxial tubular yoke with the tubular-shaped permanent magnet and defining, with the stator, a cylindrical main air gap.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.