Patent US4040565A successfully refreshed from Google Patents.
US4040565A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control unit for thermal conditioning systems
Assignee: Individual
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Filing: 1976-04-20
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Granted: 1977-08-09
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Expires: 1996-04-20
Abstract
Abstract A control unit for a temperature regulating system for heating or cooling a space includes an analog network, responsive to various variable environmental factors and simulating various fixed environment or building factors, is connected to a condenser to charge it. A predetermined voltage represents the desired temperature and is measured by a voltage sensor which is connected with circuitry for calculating rapidly the time needed for the system to be "on", whereby, for example, needed heating time is determined in a fraction of the actual time.
Inventors
- 👤 Jorn Uffe Christiansen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:18
CPC Classifications
F; F24; F24F; F24F3/00; F24F3/044; F24F3/048; F24F3/052; F24F3/0522; G; G05; G05D; G05D23/00; G05D23/19; G05D23/1902; G05D23/1904; G05D23/1927; G05D23/193; G05D23/1931; G05D23/20; G05D23/24
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
182 words
A central unit for shutting down and restarting a thermal conditioning system, such as for at least one building space, comprising: a. a first voltage source responsive to outdoor temperature; b. a second voltage source responsive to the temperature of at least one building element; c. a resistor sized to be the analog of the thermal constants affecting said space; d. a third voltage source responsive to indoor temperature in the space; e. a condenser sized to be the analog of the capacity of the thermal conditioning system; f. said first, second and third voltage sources and said resistor being connected together to form a charging network connected to said condenser; g. a voltage sensor connected to said condenser; h. a comparison circuit connected to said voltage sensor and to a preadjusted fourth voltage source representing the desired temperature; i. a time clock switch; and j. a time-determining network under the control of said time clock switch and said comparison circuit for energizing the system when needed in order for the building space to reach the desired temperature at a predetermined time.
Claim 2
Dependent Claim
182 words
A central unit for shutting down and restarting a thermal conditioning system, such as for at least one building space, comprising: a. a first voltage source responsive to outdoor temperature; b. a second voltage source responsive to the temperature of at least one building element; c. a resistor sized to be the analog of the thermal constants affecting said space; d. a third voltage source responsive to indoor temperature in the space; e. a condenser sized to be the analog of the capacity of the thermal conditioning system; f. said first, second and third voltage sources and said resistor being connected together to form a charging network connected to said condenser; g. a voltage sensor connected to said condenser; h. a comparison circuit connected to said voltage sensor and to a preadjusted fourth voltage source representing the desired temperature; i. a time clock switch; and j. a time-determining network under the control of said time clock switch and said comparison circuit for energizing the system when needed in order for the building space to reach the desired temperature at a predetermined time.
Claim 3
Dependent Claim
40 words
A control unit according to claim 1 which includes at least one RC-coupling connecting said third voltage source to said condenser, each said coupling being sized to be the analog of a factor affecting the temperature of the building space.
Claim 4
Dependent Claim
26 words
A control unit according to claim 1 which includes an amplifier connected in series with at least one of said first, second, and third voltage sources.
Claim 5
Dependent Claim
66 words
A control unit according to claim 1 in which said time-determining network comprises: a. a counter under the control of said time clock and connected for energizing the system when a certain count is reached; and b. an oscillator connected to supply a high frequency signal to said counter, said comparison circuit being connected to said oscillator to change its signal to a low frequency signal.
Claim 6
Dependent Claim
95 words
A control unit according to claim 1 in which said time-determining network comprises: a. a counter under the control of said time clock and connected for energizing the system when a certain count is reached; b. an oscillator connected to supply a high frequency signal to said counter; c. a monostable multivibrator connected to be operated by said comparison circuit; and d. a flip-flop circuit driven by said multivibrator when it changes back to its stable condition, said flip-flop circuit being connected to said oscillator to cause it to oscillate at a considerably lower frequency.
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) | 1980-08-08 | 1981-02-07 | 1981-08-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-08-08 | 1985-02-07 | 1985-08-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-08-08 | 1989-02-07 | 1989-08-09 | $7700.00 | Window Closed / Lapsed |