Wound core for an electric transformer
US4570141A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 5, 1984 |
| Grant date | Feb 11, 1986 |
| Priority date | — |
| Expiry date | Jul 5, 2004 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01F41/024
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An annular form of magnetic steel comprises a plurality of elongated sheets wound in superposed relationship about a reference axis. The sheets respectively define reference annuli, which are of progressively greater diameter as the annular form is wound about said reference axis. At least one of said reference annuli has a substantially greater diameter at one edge of the annular form than at the opposite edge of the form. At least some of the sheets that are located radially outward of said one reference annulus are provided with thickening means giving these sheets an effective thickness at one side greater than at their other side. Said one side is located on the opposite side of the longitudinal center line of the sheet from said one edge of the annular form.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.