Rotary arc position sensor with linear output
US9841296B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 6, 2011 |
| Grant date | Dec 12, 2017 |
| Priority date | — |
| Expiry date | May 2, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01D5/145
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A rotary position sensor includes a member with a shaft associated with the member such that movement of the member rotates the shaft. An arc-shaped permanent magnet is coupled to a periphery of the shaft for rotation therewith. First and second adjacent magnetic field concentrators define a gap there-between. Sensor structure is disposed in the gap. Upon movement of the member causing rotation of the shaft and magnet, the concentrators and sensor structure remain stationary, with the magnet providing a magnetic pole that changes the magnetic field in the gap. The sensor structure is constructed and arranged to respond to the changes in the magnetic field to identify a position of the member.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.