Torque sensor
US4885944A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 26, 1988 |
| Grant date | Dec 12, 1989 |
| 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 film and is detachably coupled with a shaft whose torque is to be measured. The shaft is cut into two halves and the unit has flange couplings connected to the one half of the shaft while receiving the other shaft half at its boss. The boss is elongated to form a tubular portion on which said magnetic film is affixed and an enclosure member houses the tubular portion. The coils are attached on the inner wall of the enclosure member to keep a distance from the film affixed on the tubular portion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.