US3599863A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric clock thermostat having phase responsive control apparatus
Assignee: Honeywell Inc
•
Filing: 1969-09-08
•
Granted: 1971-08-17
•
Expires: 1989-09-08
Abstract
Abstract A power supply and phase-responsive apparatus connected by two wires to a remote electric clock thermostat for supplying power to the clock motor and connecting a temperature-responsive switch apparatus in the thermostat over the same two wires to a relay associated with the phase-responsive apparatus for controlling temperature-conditioning apparatus furnishing heated air from a furnace to the space containing the clock thermostat. The phaseresponsive apparatus responding to the phase of the voltage and current supplied to the clock thermostat whereby normally with only the clock operating, the current lags the voltage, but upon the temperature-responsive switch apparatus closing an additional capacitive circuit, the current is either in phase or leads the voltage to result in the energization of the relay and thus the conditioning apparatus.
Inventors
- 👤 Balthasar H Pinckaers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 04:55
CPC Classifications
G; G05; G05D; G05D23/00; G05D23/19; G05D23/275; G05D23/1902; G05D23/1904
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
199 words
In power supply and phase-responsive apparatus comprising, an alternating current source of power, and circuit means adapted to connect said source of power to a load, the load having a supply current and voltage and being adapted to change, to thereby affect the phase relationship of the voltage and current supplied to the load, said circuit means comprising; phase-responsive means responsive to the phase relationship of the voltage and current supplied to the load, and second responsive means connected to said phase-responsive means and responsive to a change in said phase relationship of said voltage and current, said load comprises a two-wire circuit adapted to be connected to a remote space thermostat, said thermostat comprising a clock motor and a temperature-responsive circuit means, said load having a first phase relationship when only said motor is connected to said circuit and a second phase relationship when said motor and said temperature-responsive circuit means are connected to said circuit, and said second responsive means being operated when the phase relationship of the load changes from a first phase relationship to a second phase relationship, said second responsive means being adapted to control temperature-changing apparatus for supplying temperature-conditioned medium to said source.
Claim 2
Dependent Claim
199 words
In power supply and phase-responsive apparatus comprising, an alternating current source of power, and circuit means adapted to connect said source of power to a load, the load having a supply current and voltage and being adapted to change, to thereby affect the phase relationship of the voltage and current supplied to the load, said circuit means comprising; phase-responsive means responsive to the phase relationship of the voltage and current supplied to the load, and second responsive means connected to said phase-responsive means and responsive to a change in said phase relationship of said voltage and current, said load comprises a two-wire circuit adapted to be connected to a remote space thermostat, said thermostat comprising a clock motor and a temperature-responsive circuit means, said load having a first phase relationship when only said motor is connected to said circuit and a second phase relationship when said motor and said temperature-responsive circuit means are connected to said circuit, and said second responsive means being operated when the phase relationship of the load changes from a first phase relationship to a second phase relationship, said second responsive means being adapted to control temperature-changing apparatus for supplying temperature-conditioned medium to said source.
Claim 3
Dependent Claim
131 words
In an improved two-wire electric clock temperature control system wherein a clock motor and a thermostat located in a space are connected over a two-wire circuit to a remote AC power supply and control apparatus for controlling the operation of a temperature conditioning apparatus supplying temperature conditioned medium to the space comprising, first means connected to the thermostat for changing a power factor of a load on the two-wire circuit from a first to a second value when the thermostat calls for a change in the temperature of the medium being supplied to the space, and second means connected to the power supply and associated with the control apparatus for responding to said changing power factor to cause the temperature-conditioning apparatus to operate when said power factor has said second value.
Claim 4
Dependent Claim
131 words
In an improved two-wire electric clock temperature control system wherein a clock motor and a thermostat located in a space are connected over a two-wire circuit to a remote AC power supply and control apparatus for controlling the operation of a temperature conditioning apparatus supplying temperature conditioned medium to the space comprising, first means connected to the thermostat for changing a power factor of a load on the two-wire circuit from a first to a second value when the thermostat calls for a change in the temperature of the medium being supplied to the space, and second means connected to the power supply and associated with the control apparatus for responding to said changing power factor to cause the temperature-conditioning apparatus to operate when said power factor has said second value.
Claim 5
Dependent Claim
114 words
In the invention of claim 2 wherein said second means comprises; a control device becoming conductive for each cycle of AC voltage when a first source of signal voltage is available, first means responsive to the presence of current flow in the two-wire circuit in a direction opposite to the normal direction of flow of current during the positive half-cycle of said supply voltage, second means connected to said first means to render said source of signal voltage ineffective, and third means for rendering said source of signal voltage ineffective when said voltage of said positive half cycle has reached a predetermined value before said current flow reverts to said normal direction of flow.
Claim 6
Dependent Claim
29 words
The invention of claim 2 comprising; third means connected to said control apparatus for preventing said conditioning apparatus from operating when no load is connected to the two-wire circuit.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-08-16 | 1975-02-15 | 1975-08-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-16 | 1979-02-15 | 1979-08-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-16 | 1983-02-15 | 1983-08-17 | $7700.00 | Window Closed / Lapsed |