Rotation detector operable to measure magnetism direction change
US6271663A · kind A · utility
7Cited by
6References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 27, 1999 |
| Grant date | Aug 7, 2001 |
| Priority date | — |
| Expiry date | Apr 27, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K29/08
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A rotation detector that detects rotational position with high precision. The rotation detector includes a rotor having a shaft. Projections are located at predetermined intervals on the periphery of the rotor and extend in an axial direction. The rotation detector further includes magnets and magnetism detecting elements respectively detecting magnetism of the magnets. At least one of the magnets and the detecting elements are arranged between the projections and the shaft at predetermined intervals.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.