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Closed loop heating control for food warmer

  • US 6,414,283 B1
  • Filed: 08/18/1999
  • Issued: 07/02/2002
  • Est. Priority Date: 08/18/1999
  • Status: Expired due to Term
First Claim
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1. A heating control for a food warmer comprising, in combination:

  • a housing having a warming zone;

    a temperature sensor in the warming zone having a rate of heat absorption and a rate of heat loss substantially the same as a selected food product;

    a first heat and light source to provide heat continuously to the warming zone; and

    a second heat source to provide heat to the warming zone in intermittent fashion to maintain a desired set point temperature of the warming zone;

    wherein the heat required to maintain the warming zone at a desired temperature requires heat from both the first heat source and the second heat source.

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