Method of forming an electrical heating element
US7963026B2 · kind B2 · utility
0Cited by
11References
21Claims
0Family size
Inventor
Key dates
| Filing date | Oct 14, 2005 |
| Grant date | Jun 21, 2011 |
| Priority date | — |
| Expiry date | Oct 11, 2028 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/532
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A method for forming an electrical heating element by flame spraying a metal/metallic oxide matrix, wherein a flame sprayed metal/metallic oxide matrix is deposited onto an insulating or conductive substrate such as to have a higher resistance than is required for a designed use, and an intermittently pulsed high voltage DC supply is applied across the matrix such as to produce continuous electrically conductive paths through the matrix which permanently increase the overall conduction and simultaneously reduce the overall resistance of the metal/metallic matrix to achieve a desired resistance value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.