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Device for remotely changing the set temperature of a thermostat

  • US 5,644,302 A
  • Filed: 12/27/1994
  • Issued: 07/01/1997
  • Est. Priority Date: 12/27/1994
  • Status: Expired due to Fees
First Claim
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1. A remote control system for a thermostat having a rotatable dial which dial controls the temperature settings which comprises:

  • a housing joined to the thermostat;

    a control circuit within the housing to receive an input signal from a remote control device and to output a signal;

    drive means secured within the housing and in electrical communication with the control circuit, the drive means comprising a stepping motor and a first friction drive wheel which engages and rotates the thermostat dial a predetermined amount when a signal is received by the control circuit, the first friction drive wheel being biased into contacting engagement with the thermostat dial; and

    means engaged to the first friction drive wheel within the housing and extending exteriorly of the housing to disengage the drive wheel from the thermostat dial whereby the thermostat dial may be manually rotated.

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