Passive magnetic position sensor
US5442865A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jan 4, 1994 |
| Grant date | Aug 22, 1995 |
| Priority date | — |
| Expiry date | Jan 4, 2014 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S33/01
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A position sensor has an electrically non-conductive substrate with a resistance layer and a conductor track serving as a potentiometer tap arranged parallel thereto, and a second, electrically conductive substrate. At least one substrate is of resilient construction, and at least one of the substrates has a soft-magnetic layer. A magnet is mounted for guidance in the direction of the conductor track, and is located at a constant distance away from the conductive track. The two substrates are spaced apart at a distance allowing contact to be produced under magnetic action. The resistance layer and the conductor track each have structural parts which engage alternately into each other along a path of movement of the magnet.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.