Clock-thermostat system

Claim 2

In a two wire electric clock temperature-control system wherein a clock thermostat unit comprising a continuously energized clock motor and a thermostat located in a space is connected by two wires to a remote second unit comprising an alternating current power supply and a control apparatus for controlling the operation of temperature-conditioning apparatus supplying temperature-conditioned medium to the space comprising, first means located at the thermostat and electrically connected to the thermostat for changing the current wave pattern from a first to a second configuration when the thermostat calls for a change in temperature, and second means connected to the power supply and associated with the control apparatus for responding to the wave pattern change causing the temperature-conditioning apparatus to operate.

Claim 3

In a two wire electric clock temperature-control system wherein a clock thermostat unit comprising a continuously energized clock motor and a thermostat located in a space is connected by two wires to a remote second unit comprising an alternating current power supply and a control apparatus for controlling the operation of temperature-conditioning apparatus supplying temperature-conditioned medium to the space comprising, first means located at the thermostat and electrically connected to the thermostat for shifting the relative position of the current wave pattern from a first to a second position when the thermostat calls for a change in temperature, and second means connected to the power supply and associated with the control apparatus for responding to the wave pattern shift causing the temperature-conditioning apparatus to operate.

Claim 4

In a two wire electric clock temperature-control system wherein a clock thermostat unit comprising a continuously energized clock motor and a thermostat located in a space is connected by two wires to a remote second unit comprising an alternating current power supply and a control apparatus for controlling the operation of temperature-conditioning apparatus supplying temperature-conditioned medium to the space comprising, first means located at the thermostat and electrically connected to the thermostat for shifting the relative position of the current wave pattern from a first to a second position when the thermostat calls for a change in temperature, and second means connected to the power supply and associated with the control apparatus for responding to the wave pattern shift causing the temperature-conditioning apparatus to operate.

Claim 5

A control system according to claim 2 in which shift in current waveform is the result of superimposing a direct current component on the alternating current supplied over the two wires to the clock motor.

Claim 6

In a power supply and current wave-pattern-responsive apparatus comprising: a source of power, and circuit means comprising two wires adapted to connect said source of power to a load, the load comprising a space clock thermostat having a continuously energized clock motor and temperature-responsive switch means whereby a supply current over the two wires changes in wave pattern when the switch operates, said circuit means comprising: responsive means responsive to the change in current wave pattern of the current supplied over the two wires, said responsive means being adapted to control temperature-conditioning apparatus furnishing temperature-conditioned medium to the space, said clock motor and said temperature-responsive switch comprising a unit remotely located from said source of power and said responsive means comprising another unit connected to said first unit solely by said two wires.

Claim 7

In a power supply and current wave-pattern-responsive apparatus comprising: a source of power, and circuit means comprising two wires adapted to connect said source of power to a load, the load comprising a space clock thermostat having a continuously energized clock motor and temperature-responsive switch means whereby a supply current over the two wires changes in wave pattern when the switch operates, said circuit means comprising: responsive means responsive to the change in current wave pattern of the current supplied over the two wires, said responsive means being adapted to control temperature-conditioning apparatus furnishing temperature-conditioned medium to the space, said clock motor and said temperature-responsive switch comprising a unit remotely located from said source of power and said responsive means comprising another unit connected to said first unit solely by said two wires.