Torque sensor and manufacturing method of the same
US6574853B2 · kind B2 · utility
9Cited by
3References
8Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 29, 2001 |
| Grant date | Jun 10, 2003 |
| Priority date | — |
| Expiry date | Aug 29, 2021 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/4908
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
There is disclosed a torque sensor comprising: a shaft whose torque is to be detected; a magnetostrictive film formed on the shaft; and a coil for detecting a change of a magnetic property of the magnetostrictive film, wherein an intermediate film having a melting point lower than a melting point of the shaft and a melting point of magnetostrictive film is formed between the shaft and the magnetostrictive film, so that the torque sensor is superior in productivity and durability and can detect a torque in a rotational direction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.