Method for making a transformer core comprising amorphous metal strips surrounding the core window
US5093981A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 11, 1990 |
| Grant date | Mar 10, 1992 |
| Priority date | — |
| Expiry date | Jan 11, 2010 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49078
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
This method of making a transformer core from strips of amorphous metal utilizes an arbor that has a longitudinal axis and an external surface surrounding the axis that includes a portion of concave configuration forming a depression in the external surface. A plurality of packets are assembled, each packet comprising a plurality of groups of amorphous metal strips, the groups in each packet (i) comprising many aligned amorphous metal strips and (ii) having transversely-extending edges that are staggered with respect to each other longitudinally of the packet. The packets are sequentially wrapped about the arbor in superposed relationship while the arbor is held against rotation, thereby building up a core form about the arbor. Each packet prior to its being wrapped about the arbor is located so that when wrapped, opposite ends of each group meet in overlapping relationship in a location angularly aligned with said surface portion of concave configuration.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.