Heating element suitable for electric space heaters
US4469936A · kind A · utility
11Cited by
10References
11Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 22, 1983 |
| Grant date | Sep 4, 1984 |
| Priority date | — |
| Expiry date | Apr 22, 2003 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49099
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A heat generating element particularly well suited for use in an electrical space heater and method of making same include an electrically nonconductive substrate on which is coated a layer of an electrically nonconductive ceramic material having finely divided, micron size metallic particles dispersed therein. A path of electrical conductivity is established in the otherwise nonconductive ceramic material by burnishing the surface of the ceramic material between two separated points. Thus, as electrical current flows along the burnished path, heat will be generated due to the electrical resistance thereof.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.