Inductive position sensor with a cursor and a coupling scale
US7015687B2 · kind B2 · utility
16Cited by
4References
2Claims
0Family size
Inventor
Key dates
| Filing date | Jun 17, 2003 |
| Grant date | Mar 21, 2006 |
| Priority date | — |
| Expiry date | Dec 24, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01D5/2053
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The inductive position sensor includes a scale (10) with a series of conductive loops spaced out by a pitch T and a cursor (20) provided with conductors forming each a series of alternating hairpin turns spaced out by a pitch T, the inducing (21 to 23; 42, 44) and induced (31 to 33; 41, 43) cursor conductors are laid out in two separate interlaced conductor groups, coupling between inducing and induced conductors of the second group taking place only via the scale loops. Such a sensor is simple, robust, accurate, insensitive to external electromagnetic fields and tolerant of misalignment between cursor and scale.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.