Targets for coil actuated position sensors
US10641842B2 · kind B2 · utility
5Cited by
267References
19Claims
0Family size
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Key dates
| Filing date | May 26, 2017 |
| Grant date | May 5, 2020 |
| Priority date | — |
| Expiry date | Nov 17, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01F5/04
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An apparatus comprises a conductive material having varying thickness along its length, the varying thickness providing varying response along a length of the conductive material to a magnetic field having a non-zero frequency; wherein the magnetic field produces an eddy current in the conductive material which generates a reflected magnetic field, wherein the varying response causes the reflected magnetic field to vary in strength along the length of the conductive material. The apparatus may include one or more reference portions of conductive material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.