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US 4,241,288 AGranted
Electric rice cooker with two heaters
AssigneeTokyo Shibaura Denki Kabushiki Kaisha
InventorsTerutaka Aoshima, Tokihiko Ikemizu
Life of this patent
Estimating the term…
Abstract
A rice cooker having a kettle for containing rice, an inner case surrounding and supporting the kettle, first and second heaters separated from each other and mounted within the inner case and adjacent the outside surface of the kettle for heating the kettle and the contents thereof and first and second switches electrically connected to the heaters to control the energization and deenergization of the heaters so as to heat the kettle by three heating stages to obtain boiled rice of most excellent taste.
Claims14
A rice cooker comprising:
- a cooking kettle for containing water and rice to be cooked,
- a removable lid covering the top of said kettle,
- a case surrounding and supporting said kettle,
- a first heater mounted within said case and adjacent the outside surface of said kettle for heating said kettle and the contents thereof,
- a second heater separated from said first heater and mounted within said case and adjacent the outside surface of said kettle for heating said kettle and the contents thereof,
- first switch means adapted for electrically connecting at least one of said heaters to a source of electrical energy and for changing from a first to a second condition when the temperature at said first switch means exceeds a first predetermined value,
- second switch means adapted for electrically connecting at least one of said heaters to a source of electrical energy and for changing from a first to a second condition when the temperature at said second switch means exceeds a second predetermined value, and
- means for connecting said first and second switch means to said first and second heaters so that, until said first switch means changes from said first to said second condition, the total heat produced by said first and second heaters is at a first rate and thereafter the total heat produced is at a greater rate and, when said second switch means changes from said first to said second condition, the total heat produced by said first and second heaters is at a rate less than said greater rate.
5 more elements
Dependencies are inferred from the claim text.