Torque measurement apparatus
US6997065B2 · kind B2 · utility
8Cited by
18References
11Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 27, 2004 |
| Grant date | Feb 14, 2006 |
| Priority date | — |
| Expiry date | Mar 16, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01L3/102
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Torque in a shaft is detected by means of non-contacting sensors sensing a torque-dependent magnetic field emanated by an integral transducer region of the shaft that is circumferentially or longitudinally magnetized. The shaft is driven by a motor and subject to a longitudinal magnetic field which acts on interference field. In one implementation of the invention coils are energized to provide a counteracting magnetic field to compensate the interference field.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.