Position sensor for detecting angular position
US4810967A · kind A · utility
32Cited by
7References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 19, 1987 |
| Grant date | Mar 7, 1989 |
| Priority date | — |
| Expiry date | Mar 19, 2007 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M1/245
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A light, compact angle-of-rotation sensor is provided that is comprised of a magnetic ring bonded to a shaft by means of resin. The magnetic ring is provided around its periphery with a number of magnetized zones, with each such magnetized zone having a different number of magnetic poles, and magnetic interference between magnetized zones is prevented by leaving non-magnetized spaces between the magnetized zones. The prevention of magnetic interference can be further enhanced by the provision of non-magnetized portions between the magnetic poles of the magnetized zones.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.