Torque sensor
US4899597A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 26, 1988 |
| Grant date | Feb 13, 1990 |
| Priority date | — |
| Expiry date | Feb 26, 2008 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01L3/105
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A torque sensor comprising a magnetic amorphous film whose magnetostrictive characteristics vary with the amount of torque applied thereto and coils for detecting magnetostrictive variation disposed opposite the magnetic member. The torque sensor is constituted as an independent unit separate from the shaft whose torque is to be measured. The independent unit comprises a tubular or a shaft member having the magnetic amorphous film attached thereto and a housing with the coils at its inner wall. The housing covers the tubular or shaft member and is rotatable about the same axis as the member. The tubular member is easily mounted on the shaft through spline fittings in one embodiment and the short shaft member via spline fittings and flange couplings.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.