Passive magnetic position sensor
US6070337A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Oct 8, 1997 |
| Grant date | Jun 6, 2000 |
| Priority date | — |
| Expiry date | Oct 8, 2017 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S33/01
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A passive magnetic position sensor, has a substrate with a resistance network arranged on it, and a contact structure which is associated with the resistance network and which can be deflected under the action of a magnet device. An electric connection which is dependent on the position of the magnet device is produced between resistance network and contact structure. In order to provide a position sensor which has a high resolution, operates with a little wear, and is constructively simple to produce, the contact structure is developed as contact-spring structure, and the junction points of the resistance network are connected to contact surfaces also applied on the substrate. The contact-spring structure is arranged at a constant distance from the contact surfaces, the latter entering into contact with the contact-spring structure under the action of the magnet device. At least the contact-surfaces and the contact-spring structure are enclosed in a tight housing, and the magnet device is movable outside the tight housing. A stepped output signal is tapped off from the contact structure as a function of the position of the magnet device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.