BATTERY POWERED FOOD WARMER
First Claim
1. A food warmer, comprising:
- a water pan for holding water;
a housing for supporting the water pan;
a food pan supported by the water pan above the water in the water pan;
an electrical heating element located underneath, and in conductive contact with, the water pan, so as to heat the water in the water pan;
a first removable battery and a second removable battery for providing power to the electrical heating element; and
a processor conductively coupled with the electrical heating element and with the first and second removable batteries, wherein the processor is configured for;
engaging a switch for relaying power to the electrical heating element from the first battery;
detecting that the first battery has depleted below a predefined threshold; and
engaging a switch for relaying power to the electrical heating element from the second battery.
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Accused Products
Abstract
The food warmer apparatus is disclosed. The food warmer includes a water pan for holding water, a housing for supporting the water pan, a food pan supported by the water pan above the water, and an electrical heating element located underneath, and in conductive contact with, the water pan, so as to heat the water in the water pan. The food warmer also includes a first and second removable battery for providing power to the electrical heating element, and a processor conductively coupled with the electrical heating element and with the first and second removable batteries, wherein the processor is configured for engaging a switch for relaying power to the electrical heating element from the first battery, detecting that the first battery has depleted below a threshold, and engaging a switch for relaying power to the electrical heating element from the second battery.
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Citations
20 Claims
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1. A food warmer, comprising:
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a water pan for holding water; a housing for supporting the water pan; a food pan supported by the water pan above the water in the water pan; an electrical heating element located underneath, and in conductive contact with, the water pan, so as to heat the water in the water pan; a first removable battery and a second removable battery for providing power to the electrical heating element; and a processor conductively coupled with the electrical heating element and with the first and second removable batteries, wherein the processor is configured for; engaging a switch for relaying power to the electrical heating element from the first battery; detecting that the first battery has depleted below a predefined threshold; and engaging a switch for relaying power to the electrical heating element from the second battery. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A food warmer, comprising:
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a water pan for holding water; a housing for supporting the water pan; a food pan supported by the water pan above the water in the water pan; a lid for placement on top of the food pan; an electrical heating element located underneath, and in conductive contact with, the water pan, so as to heat the water in the water pan; a sensor coupled with the electrical heating element for sensing a current temperature of the electrical heating element; a removable battery for providing power to the electrical heating element; a user input interface located on an exterior of the food warmer, wherein a user may input a desired temperature for the food pan; and a processor conductively coupled with the user input interface, the sensor, the electrical heating element and the removable battery, wherein the processor is configured for; reading the desired temperature entered by the user; engaging a switch for relaying power to the electrical heating element from the battery; reading a current temperature of the electrical heating element from the sensor and determining that the current temperature is substantially equal to the desired temperature entered by the user; and engaging a switch for withdrawing power to the electrical heating element from the battery. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19)
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20. A food warmer, comprising:
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a water pan for holding water; a housing for supporting the water pan; a food pan supported by the water pan above the water in the water pan; a lid for placement on top of the food pan; an electrical heating element located underneath, and in conductive contact with, the water pan, so as to heat the water in the water pan; a sensor coupled with the electrical heating element for sensing a current temperature of the electrical heating element; a display located on the exterior of the food warmer for displaying a current temperature of the electrical heating element; a removable battery for providing power to the electrical heating element; a sensor that senses a current charge status of the battery; a user input interface located on an exterior of the food warmer, wherein a user may input a desired temperature for the food pan; a processor conductively coupled with the user input interface, the sensor, the electrical heating element and the removable battery, wherein the processor is configured for; reading the desired temperature entered by the user; engaging a switch for relaying power to the electrical heating element from the battery; reading a current temperature of the electrical heating element from the sensor and determining that the current temperature is substantially equal to the desired temperature entered by the user; and engaging a switch for withdrawing power to the electrical heating element from the battery; and a communications module including a radio frequency transmitter for transmitting a current charge status of the battery and a current temperature of the electrical heating element.
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Specification