Torsion measuring device for a rotating shaft
US5501110A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 31, 1993 |
| Grant date | Mar 26, 1996 |
| Priority date | — |
| Expiry date | Mar 31, 2013 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01L3/104
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Two magnetic field generators are located symmetrically to each other in a first plane perpendicular to a shaft, and two magnetic field detectors are immobilized in a second plane perpendicular to the shaft. The magnetic field detectors provide a signal proportional to the torsional moment as a result of angular shift of the magnetic field generators with respect to the magnetic field detectors. The magnetic field generators have a magnetized structure with antiparallel magnetization directions and are supported by a first disk mounted on the shaft and are placed at the end of a first hub which surrounds the shaft. The first hub supports a bearing for mounting a second hub and second disk, which is axially shifted and to which the magnetic field detectors are rigidly attached.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.