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Room temperature controller

  • US 4,318,508 A
  • Filed: 12/10/1979
  • Issued: 03/09/1982
  • Est. Priority Date: 12/10/1979
  • Status: Expired due to Term
First Claim
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1. A control device for a room in which the temperature is controlled by an adjustable thermostat which controls heating and cooling apparatus comprising:

  • detection means disposed in the room for producing a control signal when the room is occupied;

    control means connected to said detection means for enabling said thermostat in response to said control signal; and

    timing means connected to said control means for causing said control means to disable said thermostat after a first preselected time period following an occurrence of said control signal and to disable said detection means for a second preselected time period following said first preselected time period, said second period short with respect to said first period.

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