Error alarm system in a microwave oven
US4309585A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 18, 1979 |
| Grant date | Jan 5, 1982 |
| Priority date | — |
| Expiry date | Dec 18, 1999 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05B6/66
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A microwave oven comprises a digital control circuit for controlling microwave generation, and a multi-digit digital display unit for displaying a cooking condition. A determination system is associated with a door switch for developing a display control signal when a cook start switch is actuated before an oven door is tightly closed. In response to the display control signal, an alarm display, for example, "DOOR" is provided on the multi-digit digital display unit. The microwave oven further comprises a food temperature sensor probe for sensing a temperature of foodstuff being cooked. The multi-digit digital display unit provides another alarm display, for example, "PROBE" if the cook start switch is actuated under the condition where the food temperature sensor probe is not placed in its operative condition even though the food temperature control mode of operation is selected.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.