Inductive apparatus
US4471336A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 20, 1983 |
| Grant date | Sep 11, 1984 |
| Priority date | — |
| Expiry date | Dec 20, 2003 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01F27/245
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A sheet winding (7) in a transformer is made with double-curved conductor sheets. Some of the winding turns are mutually different as regards the curvature visible in an axial section. This has been achieved by arranging a number of filling members at each one of the end surfaces of the winding. Each filling member contains several turns of a filling tape (14), which are evenly distributed in a group of mutually adjacently positioned winding turns wound from a conductor sheet (9). Because the filling tape has different degrees of overlap in the different turns of the conductor sheet (9), the filling member will have approximately the same effect as a filling body which, in axial section, exhibits a wedge-shaped cross-section area.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.