Magnetic rotation sensor for rotary shaft
US5239263A · kind A · utility
9Cited by
2References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 19, 1991 |
| Grant date | Aug 24, 1993 |
| Priority date | — |
| Expiry date | Nov 19, 2011 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/4902
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
This invention relates to a rotation sensor which detects the magnetic field which changes with the rotation of a rotary shaft, thereby to detect the amount of rotation of the rotary shaft. The rotation sensor of the present invention has the boundaries between magnetized regions set with high precision. The boundaries forms magnetic fields stably, whereby the detection of rotation is performed with high accuracy.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.