Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
285 words
A smoke-detecting, timer-controlled thermostat for controlling the flow of electrical power from a power source to a heat exchanger device used for conditioning the air in an area to be controlled, said thermostat comprising: a. a temperature control circuit means connected between said heat exchanger device and power source for controlling the flow of power to said heat exchanger device, said temperature control circuit including at least two temperature responsive means that can be alternatively actuated to selectively control the temperature at which said temperature control circuit means will allow full power to flow to said heat exchanger device and a duty cycle control means for determining the temperature change at which said temperature control means will discontinue the flow of full power to said heat exchanger device and for determining the rate at which on-off cycles of said heat exchanger device occur, b. an adjustable timing circuit means connected to said temperature control circuit means actuating during predetermined time periods a selected one of said temperature responsive means employed in said temperature control circuit means, whereby at predetermined times a selected temperature will automatically be maintained in the controlled area and at least two different temperatures can be selected for alternate times, c. a smoke detector means connected to said temperature control circuit means for sounding an alarm in response to the presence of smoke and inhibiting the flow of power to said heat exchanger device by disabling said temperature control circuit means, d. said timing circuit means further including an output means for supplying a pulsating voltage at an audiable frequency to said smoke detector means, said smoke detector means using said pulsating voltage to produce an alarming sound when smoke is detected.
Claim 2
Dependent Claim
285 words
A smoke-detecting, timer-controlled thermostat for controlling the flow of electrical power from a power source to a heat exchanger device used for conditioning the air in an area to be controlled, said thermostat comprising: a. a temperature control circuit means connected between said heat exchanger device and power source for controlling the flow of power to said heat exchanger device, said temperature control circuit including at least two temperature responsive means that can be alternatively actuated to selectively control the temperature at which said temperature control circuit means will allow full power to flow to said heat exchanger device and a duty cycle control means for determining the temperature change at which said temperature control means will discontinue the flow of full power to said heat exchanger device and for determining the rate at which on-off cycles of said heat exchanger device occur, b. an adjustable timing circuit means connected to said temperature control circuit means actuating during predetermined time periods a selected one of said temperature responsive means employed in said temperature control circuit means, whereby at predetermined times a selected temperature will automatically be maintained in the controlled area and at least two different temperatures can be selected for alternate times, c. a smoke detector means connected to said temperature control circuit means for sounding an alarm in response to the presence of smoke and inhibiting the flow of power to said heat exchanger device by disabling said temperature control circuit means, d. said timing circuit means further including an output means for supplying a pulsating voltage at an audiable frequency to said smoke detector means, said smoke detector means using said pulsating voltage to produce an alarming sound when smoke is detected.
Claim 3
Dependent Claim
80 words
A thermostat as described in claim 1 wherein said thermostat is powered by a small leakage current-flow from said power source through said heat exchanger device during off states of said heat exchanger device, said thermostat including a battery means for supplying operating power to said thermostat when full power is allowed to flow to said heat exchanger device, said thermostat including a power supply circuit means for limiting the current and regulating the voltage upon which said thermostat operates.
Claim 4
Dependent Claim
45 words
A thermostat as described in claim 1 wherein said timing circuit means includes a transistor circuit means and an integrated-circuit clock means, said transistor circuit means selectively actuating one of said temperature responsive means in response to signals generated by said integrated circuit clock means.
Claim 5
Dependent Claim
103 words
A thermostat as described in claim 1 wherein said duty cycle control means includes a transistor means, a resistive means and a capacitive means, said resistive means and capacitive means determining the rate of change in current flow through the collector of said transistor means during and following on states of said heat exchanger device and thereby determining the duration of on states of said heat exchanger device and determining the time required from the end of an on state of said heat exchanger device for returning said temperature control circuit to the conditions which existed at the beginning of the on state.
Claim 6
Dependent Claim
40 words
A thermostat as described in claim 1 wherein said smoke detector means includes a smoke chamber means, a photodarlington transistor means and a light source means for producing fluctuating voltage signals in response to smoke entering said smoke chamber means.
Claim 7
Dependent Claim
38 words
A thermostat as described in claim 2 wherein said battery maintains the operation of said smoke detector means if said power source is suddenly disabled, whereby a charge is maintained in said battery by said small leakage current-flow.