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Environmental thermostat assembly

  • US 4,428,528 A
  • Filed: 11/04/1982
  • Issued: 01/31/1984
  • Est. Priority Date: 11/12/1981
  • Status: Expired due to Fees
First Claim
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1. An environment thermostat assembly with a daily programming device, comprising a thermostat, a digital clock with a seven segment display device, a programming selecting circuit with two temperature reference values, a reference value switching device, and a control circuit for controlling the switching circuit, said control circuit being monitored by the digital output signal of the digital clock and by the program selecting circuit, wherein the control circuit comprises a digital/decimal converter for converting the hour unit digital data into a one out of ten code signal, the ten outputs of the converter (N/D) being connected to the vertical wires of a cross-point matrix having three pair of output wires, the output pairs being respectively assigned to the hours of which the tenth figure is 2, 1 and 0, said output wires being connected to the corresponding input of a logical circuit which has also a number of inputs connected to the active outputs of the clock when the hour tenth figures is 1 or 2, respectively, some cross-points of the matrix being selectively connected in accordance with the different predetermined programs, electronic contacts being mounted on the output wires of the matrix and controlled by the program selecting circuit, the output of the logical circuit being connected to a reference value adjusting potentiometer, the voltage transmitted to said potentiometer through the output of the logical circuit varying between two values in accordance with the logical levels of the outputs of the logical circuit.

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