Encoder provided with giant magnetoresistive effect elements
US6452382B1 · kind B1 · utility
15Cited by
4References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 12, 1999 |
| Grant date | Sep 17, 2002 |
| Priority date | — |
| Expiry date | Jul 12, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01B7/30
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The encoder of the present invention includes at least a pair of giant magnetoresistive effect elements, in which the giant magnetoresistive effect elements to be paired are formed on a substrate in a state that the elements are connected mutually electrically with the orientations of magnetization axes of the pinned magnetic layers each facing the same direction in parallel, a magnetic coding member is rotatably supported to face the giant magnetoresistive effect elements on the substrate, and the magnetic coding member has a plurality of magnetic poles formed along the direction of rotation of itself.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.