Electronic clock timer for a kitchen range
US4769556A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 3, 1987 |
| Grant date | Sep 6, 1988 |
| Priority date | — |
| Expiry date | Dec 3, 2007 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG04G15/006
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An electronic clock timer for a kitchen range; in which the timer includes a control circuit, a display area, with entry elements and with a switch arranged in the control circuit, through which the appliance or electrical consumer which is controlled by the timer through a power switch, can be switched over from manual operation to automatic operation upon the digital entry of at least one complete switching or operating cycle. The power switch and the electrical consumer are electrically connected in series with a selector switch arranged on the consumer for preselection of the power supply to the latter; and with a component being associated with the power switch, which detects the opened or closed condition of the switch in such a manner that a signal is transmitted from this component to a control switching circuit when, at an already opened power switch, there is also opened the selector switch and that as a result thereof there is effectuated in the control switching circuit a switchover from automatic to manual operation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.