Siphon coffee maker
AssigneeKabushiki Kaisha Toshiba
InventorsHumihiro Imamura, Tomio Hotta
Life of this patent
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Abstract
A siphon coffee maker includes a lower container for containing water, an electric heater for applying heat to the lower container, an upper container disposed on the lower container and having a water feed tube communicating to the interior of the lower container, a storage for storing data of an amount of coffee to be extracted, and a microcomputer-based control unit. The control unit operates to energize the heater in response to an extracting operation command, thereby starting an extracting operation. The control unit then operates to energize the heater after completion of the extracting operation by supplying the heater with an electrical output in proportion to the temperature of the amount of coffee to be extracted, data of which is stored in the storage.
Claims9
A siphon coffee maker comprising:
- (a) a lower container for containing water;
- (b) a heater for applying heat to the lower container;
- (c) an upper container disposed on the lower container, the upper container being provided with a water feed tube communicating to the interior of the lower container;
- (d) storage means for storing data of an amount of coffee to be extracted;
- and
- (e) control means for operating to energize the heater in response to an extracting operation command, thereby starting the extracting operation, the control means operating, after completion of the extracting operation, to supply the heater with an electrical output varied in proportion to the amount of coffee to be extracted, data of which is stored in the storage means, so that the heater is energized to execute a warmth retaining operation for the coffee extracted.
A siphon coffee maker comprising:
- (a) a lower container for containing water;
- (b) a heater for applying heat to the lower container;
- (c) an upper container disposed on the lower container, the upper container being provided with a water feed tube communicating to the interior of the lower container;
- (d) a temperature sensor disposed so as to be brought into contact with the upper container, thereby sensing the temperature of the upper container;
- (e) temperature data storing means for storing data of the temperature of the upper container sensed by the temperature sensor;
- and
- (f) control means for operating to energize the heater in response to an extracting operation command, thereby starting the extracting operation, the control means subsequently operating to deenergize the heater when the temperature of the upper container sensed by the temperature sensor reaches a predetermined value, thereby completing the extracting operation, the control means operating to supply the heater with input in inverse proportion to the temperature of the upper container sensed by the temperature sensor, data of which is stored in the storage means, after completion of the extracting operation, thereby executing a warmth retaining operation for coffee contained in the lower container.
Dependencies are inferred from the claim text.