Electromagnetically moving device
US10593493B2 · kind B2 · utility
2Cited by
3References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 3, 2017 |
| Grant date | Mar 17, 2020 |
| Priority date | — |
| Expiry date | Apr 22, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H2036/0086
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
In an electromagnetically moving device 100, a magnetic-flux variation measuring unit 3 is placed at a position which is outside a closed magnetic path established when a movable core 6 and a stationary core 5 are being attached to each other due to permanent magnets 7, and at which a leakage magnetic-flux variation due to movement of the movable core 6 can be measured, so that a behavior of a movable part in a switch, etc. is estimated such that an inflection point time is calculated from the measurement of time-series data of the magnetic-flux variation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.