Displacement sensor
US6867583B2 · kind B2 · utility
8Cited by
5References
9Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Nov 13, 2002 |
| Grant date | Mar 15, 2005 |
| Priority date | — |
| Expiry date | Jan 30, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01D2205/775
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A displacement sensor precisely detects displacement of a moving body in a rectilinear movement direction even if the moving body rotates. The sensor includes a detector and a magnet. The cross sectional area of the permanent magnet in a plane perpendicular to an axis, which extends in the rectilinear movement direction, varies in the direction of movement. The permanent magnet is magnetized in the rectilinear movement direction. The detector is located so that magnetic flux passes through a detection face of the detector substantially perpendicularly.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.