Coil device
US10629363B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 1, 2017 |
| Grant date | Apr 21, 2020 |
| Priority date | — |
| Expiry date | Mar 1, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01F27/292
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A coil device includes a winding core with a coil portion wound by a wire, first and second flanges with open magnetic circuit respectively formed on both sides of the winding core in an axial direction, and a first facing surface of the first flange and a second facing surface of the second flange facing each other in the axial direction on an outer circumference side of the coil portion. S1/S2 is 0.2 to 1.0, where S1 is a maximum lateral cross sectional area of the winding core as seen from the axial direction, and S2 is a projected overlapping area overlapped by the first facing surface and the second facing surface as seen from the axial direction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.