Turning angle detector
US7352173B2 · kind B2 · utility
1Cited by
8References
11Claims
0Family size
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Key dates
| Filing date | Apr 12, 2004 |
| Grant date | Apr 1, 2008 |
| Priority date | — |
| Expiry date | Jan 10, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01D5/145
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
External magnetic members are provided outside the outer periphery of a rotor. When the rotor is positioned around its turning angle of 70 degrees, part of the magnetic fluxes generated by magnets pass through the external magnetic members. This makes it possible to reduce the magnetic fluxes passing through Hall ICs around the turning angle of 70 degrees, thereby linearizing the change characteristic of the magnetic flux density. Thus, it is possible to generally linearize the change characteristic of the density of the magnetic fluxes through the Hall ICs 7, with the detectable angle range kept wide.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.