Electrical device having a heat generating resistive element
US7427911B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 1, 2005 |
| Grant date | Sep 23, 2008 |
| Priority date | — |
| Expiry date | Mar 8, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05B2203/017
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The invention provides an electrical device having improved insulation and reduced partial discharge. The electrical device comprises an electrically conductive resistive element provided on a heat transfer medium for transferring heat from the element. The heat transfer medium includes a layer or body of electrically conductive material and a layer of thermally conductive dielectric material disposed between the element and the electrically conductive material. A continuous film of electrically insulating material, for example a silica over-glaze or polymer encapsulant, is applied around the perimeter of the resistive element to surround the element with the film overlying the edge or edges of the element and the ceramic material adjacent thereto.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.