Self-cleaning glass-ceramic surface cooking unit
US4251716A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 30, 1978 |
| Grant date | Feb 17, 1981 |
| Priority date | — |
| Expiry date | Nov 30, 1998 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05B2213/07
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An automatic cleaning arrangement for a glass-ceramic cooking surface which is adapted to remove baked-on soils from the surface regions surrounding the individual cooking areas by the process of oxidation. Additional thin film heaters are located under the regions to be cleaned and are activated by a timer controlled power supply circuit. An interlock switch in the cook heater line disables the cook heater when the cleaning operation is in progress. The power supply circuit for the thin film heaters is arranged to disable automatically the cooking heaters when a break occurs in the glass-ceramic surface in the region of the thin film heaters.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.