Time variable thermostat
First Claim
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1. A unitary electrical time variable set point thermostatic device adapted for use in a two wire control circuit of a heating or cooling system without additional wiring comprising:
- a. thermostatic control means having temperature set points and responsive to ambient temperature for opening and closing a thermostatic switch therein, said switch energizing said control circuit to operate said heating or cooling system when said ambient temperature varies a determined amount from said set point;
b. electric timer means for cyclically changing said set point of said thermostatic means from an initial value at a selected time to a second value and at a selected time thereafter restoring said set point to said initial value;
c. electrical energy storage means for continuously energizing said timer means independent of said two wire control circuit, said electrical energy storage means comprising a battery connected to said electric timer means; and
d. means connected in said control circuit for charging said battery during periods when said switch of said thermostatic control means is open.
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Abstract
A self-powered set-back electrical thermostatic device for use in a control circuit of a temperature control system requiring no additional wiring that includes a battery powered, motor driven timing mechanism for changing the ambient temperature setting of a thermostat at selected times.
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Citations
6 Claims
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1. A unitary electrical time variable set point thermostatic device adapted for use in a two wire control circuit of a heating or cooling system without additional wiring comprising:
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a. thermostatic control means having temperature set points and responsive to ambient temperature for opening and closing a thermostatic switch therein, said switch energizing said control circuit to operate said heating or cooling system when said ambient temperature varies a determined amount from said set point; b. electric timer means for cyclically changing said set point of said thermostatic means from an initial value at a selected time to a second value and at a selected time thereafter restoring said set point to said initial value; c. electrical energy storage means for continuously energizing said timer means independent of said two wire control circuit, said electrical energy storage means comprising a battery connected to said electric timer means; and d. means connected in said control circuit for charging said battery during periods when said switch of said thermostatic control means is open. - View Dependent Claims (2, 3, 4, 5, 6)
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Specification