Induction type position measuring apparatus
US9568300B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 30, 2015 |
| Grant date | Feb 14, 2017 |
| Priority date | — |
| Expiry date | Mar 28, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01D1/00
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An induction type position measuring apparatus includes a scale and a sensor. The scale includes a track having a plurality of control patterns provided at equal intervals along a measurement reference line to control flow of an induced current, and a first edge portion and a second edge portion located on both sides of the measurement reference line. The sensor is provided to be capable of moving relatively to the scale along the measurement reference line to detect an induced current. The scale includes regulation patterns at least between the track and the first edge portion or between the track and the second edge portion to regulate a flow of an induced current.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.