Advanced electronic microminiature coil and method of manufacturing
US6642827B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 13, 2000 |
| Grant date | Nov 4, 2003 |
| Priority date | — |
| Expiry date | Apr 11, 2021 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/4902
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An advanced microelectronic coil device incorporating a toroidal core and a plurality of sets of windings, wherein the windings are separated by one or more layers of insulating material. In one embodiment, the insulating material is vacuum-deposited over the top of a first set of windings before the next set of windings is wound onto the core. In this fashion, the insulating material insulates the entire first winding from the second without the need for individual insulation on each of the windings, or the use of margin tape. The use of the vacuum-deposited insulating layer(s) provides a high degree of dielectric strength, yet consumes a minimum space since the insulation on each winding is minimized. The toroidal core is also optionally provided with a controlled thickness gap for controlling saturation of the core.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.