US3366331A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combustion control
Assignee: Combustion Engineering Inc
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Filing: 1965-05-03
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Granted: 1968-01-30
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Expires: 1985-05-03
Abstract
No abstract record available.
Inventors
- 👤 Jr Alex W Francis
- 👤 Robert W Coggins
- 👤 James O Brown
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 00:43
CPC Classifications
G; G05; G05D; G05D11/00; G05D11/02; G05D11/13; G05D11/131; G05D11/132; F; F23; F23N; F23N1/00; F23N1/02; F23N1/025; F23N1/08; F23N1/10; F23N1/105; F23N2233/00; F23N2233/06; F23N2235/00; F23N2235/02; F23N2235/06; F23N2241/00; F23N2241/10; F23N5/00; F23N5/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
161 words
A COMBUSTION CONTROL SYSTEM INCLUDING A STEAM GENERATOR SUPPLIED WITH WATER WHICH IS CONVERTED INTO STEAM WHEN HEATED IN THE GENERATOR BY COMBUSTION IN THE GENERATOR, A METER ARRANGED TO RESPOND TO THE RATE OF WATER SUPPLIED THE GENERATOR BY ESTABLISHING A FIRST FLUID PRESSURE OUTPUT SIGNAL, AN AIR REGULATOR FOR COMBUSTION AIR CONNECTED TO THE FIRST FLUID PRESSURE OUTPUT SIGNAL TO BE POSITIONED WITHIN A PREDETERMINED RANGE, A FLUID PRESSURE SIGNAL GENERATOR MECHANICALLY CONNECTED TO THE AIR REGULATOR TO ESTABLISH A SECOND FLUID PRESSURE SIGNAL REPRESENTATIVE OF THE POSITION OF THE AIR REGULATOR, A METER ARRANGED TO RESPOND TO THE RATE OF FUEL SUPPLIED THE GENERATOR BY ESTABLISHING AN ELECTROMAGNETIC SIGNAL REPRESENTATIVE OF THE FUEL RATE, MEANS FOR ELECTROMAGNETICALLY COMPARING THE FUEL SIGNAL AND THE SECOND FLUID PRESSURE SIGNAL TO GENERATE A THIRD FLUID PRESSURE SIGNAL REPRESENTATIVE OF THEIR DIFFERENCE, AND A FUEL REGULATOR RESPONSIVE TO THE THIRD SIGNAL TO PROPORTION THE FUEL TO THE WATER TO MAINTAIN STEAM QUALITY.
Claim 2
Dependent Claim
161 words
A COMBUSTION CONTROL SYSTEM INCLUDING A STEAM GENERATOR SUPPLIED WITH WATER WHICH IS CONVERTED INTO STEAM WHEN HEATED IN THE GENERATOR BY COMBUSTION IN THE GENERATOR, A METER ARRANGED TO RESPOND TO THE RATE OF WATER SUPPLIED THE GENERATOR BY ESTABLISHING A FIRST FLUID PRESSURE OUTPUT SIGNAL, AN AIR REGULATOR FOR COMBUSTION AIR CONNECTED TO THE FIRST FLUID PRESSURE OUTPUT SIGNAL TO BE POSITIONED WITHIN A PREDETERMINED RANGE, A FLUID PRESSURE SIGNAL GENERATOR MECHANICALLY CONNECTED TO THE AIR REGULATOR TO ESTABLISH A SECOND FLUID PRESSURE SIGNAL REPRESENTATIVE OF THE POSITION OF THE AIR REGULATOR, A METER ARRANGED TO RESPOND TO THE RATE OF FUEL SUPPLIED THE GENERATOR BY ESTABLISHING AN ELECTROMAGNETIC SIGNAL REPRESENTATIVE OF THE FUEL RATE, MEANS FOR ELECTROMAGNETICALLY COMPARING THE FUEL SIGNAL AND THE SECOND FLUID PRESSURE SIGNAL TO GENERATE A THIRD FLUID PRESSURE SIGNAL REPRESENTATIVE OF THEIR DIFFERENCE, AND A FUEL REGULATOR RESPONSIVE TO THE THIRD SIGNAL TO PROPORTION THE FUEL TO THE WATER TO MAINTAIN STEAM QUALITY.
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) | 1971-01-29 | 1971-07-31 | 1972-01-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-01-29 | 1975-07-31 | 1976-01-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-01-29 | 1979-07-31 | 1980-01-30 | $7700.00 | Window Closed / Lapsed |