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Room control system

  • US 5,165,465 A
  • Filed: 01/25/1990
  • Issued: 11/24/1992
  • Est. Priority Date: 05/03/1988
  • Status: Expired due to Fees
First Claim
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1. A method of setting back the temperature in a room having an air flow means and heating and cooling means, said method comprising:

  • automatically determining the amount by which to set back said temperature by detecting when the heating or cooling means in said room come on with said air flow means on and at such time taking a first reading of the temperature in said room, and then taking a second reading of the temperature in said room a predetermined period of time later but while said air flow means and heating or cooling means are still on, and determining the temperature difference between said first and second readings, such temperature difference being the amount by which said room gains or loses heat in said time and constituting the amount of said set back, and then setting back the temperature in said room by said amount.

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