Method for making packets of amorphous metal strip for transformer-core manufacture
US5191700A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 1, 1991 |
| Grant date | Mar 9, 1993 |
| Priority date | — |
| Expiry date | Aug 1, 2011 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T83/8854
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Certain transformer cores are manufactured by wrapping about an arbor packets of amorphous metal strip, each packet comprising a plurality of groups of strip, and each group comprising many thin layers of strip. This method of making such packets comprises: (a) providing composite strip comprising many thin layers of amorphous metal strip stacked in superposed relationship, (b) cutting said composite strip a first time to form a first multi-layer section of predetermined length, (c) cutting said composite strip a second time to form a second multi-layer section of predetermined length, (d) substantially aligning the first and second multi-layer sections to form from these sections one of said groups, and (e) carrying out the above cutting steps with blades capable of cutting only a predetermined maximum number of the above layers without causing the life of the blades to sharply drop, this maximum number being less than the number of layers in each group but greater than the number of layers cut in each of steps (b) and (c).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.