Kettle controller
US7777159B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 2, 2008 |
| Grant date | Aug 17, 2010 |
| Priority date | — |
| Expiry date | Nov 25, 2028 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA47J27/21141
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
The present invention provides apparatuses and methods for boiling a liquid such as water. The liquid is heated at full power when the measured temperature of the liquid is below a first predetermined threshold. When the temperature is above the first predetermined threshold and below a second predetermined threshold, partial power, which may be based on the duty cycle, is applied to the heater. When the measured temperature of the liquid reaches the second predetermined threshold, power is removed from the heater after a predetermined time. When the increase of the measured temperature is less than a predetermined temperature change during a predetermined time duration, it is determined that the liquid is boiling and power is removed to the heater. If the level is too high or too low, an alarm may be activated and/or power removed from the heater.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.