US3257993A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Soot blower operation for vapor generator furnaces
Assignee: Combustion Engineering Inc
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Filing: 1964-09-28
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Granted: 1966-06-28
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Expires: 1984-09-28
Abstract
No abstract record available.
Inventors
- 👤 Jr Edward L Kochey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 16:15
CPC Classifications
F; F28; F28G; F28G3/00; F28G3/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
143 words
A VAPOR GENERATOR FURNACE; TUBULAR SURFACE LINING THE WALLS OF SAID FURNACE; A PLURALITY OF GROUPS OF TUBES CONNECTED IN PARALLEL COMPRISING AT LEAST A SECTION OF SAID FURNACE WALLS; MEANS FOR PASSING FLUID TO BE HEATED THROUGH SAID GROUPS OF TUBES; AT LEAST ONE SOOT BLOWER ASSOCIATED WITH GROUP OF TUBES; MEANS FOR DETERMINING THE AVERAGE TEMPERATURE OF THE FLUID LEAVING SAID FURNACE SECTION; MEANS FOR DETERMINING THE TEMPERATURE OF FLUID LEAVING EACH GROUP OF TUBES; MEANS FOR COMPARING THE THE TEMPERATURE OF THE FLUID LEAVING EACH GROUP OF TUBES WITH THE TEMPERATURE OF THE FLUID LEAVING SAID SECTION; MEANS FOR ESTABLISHING A PREDETERMINED ALLOWABLE TEMPERATURE DIFFERENCE BETWEEN THE FLUID LEAVING EACH GROUP OF TUBES AND THE FLUID LEAVING THE SECTIONS; MEANS RESPONSIVE TO SAID COMPARING MEANS FOR OPERATING A SOOT BLOWER ASSOCIATED WITH A GROUP OF TUBES WHEN THE DIFFERENCE BE-
Claim 2
Dependent Claim
143 words
A VAPOR GENERATOR FURNACE; TUBULAR SURFACE LINING THE WALLS OF SAID FURNACE; A PLURALITY OF GROUPS OF TUBES CONNECTED IN PARALLEL COMPRISING AT LEAST A SECTION OF SAID FURNACE WALLS; MEANS FOR PASSING FLUID TO BE HEATED THROUGH SAID GROUPS OF TUBES; AT LEAST ONE SOOT BLOWER ASSOCIATED WITH GROUP OF TUBES; MEANS FOR DETERMINING THE AVERAGE TEMPERATURE OF THE FLUID LEAVING SAID FURNACE SECTION; MEANS FOR DETERMINING THE TEMPERATURE OF FLUID LEAVING EACH GROUP OF TUBES; MEANS FOR COMPARING THE THE TEMPERATURE OF THE FLUID LEAVING EACH GROUP OF TUBES WITH THE TEMPERATURE OF THE FLUID LEAVING SAID SECTION; MEANS FOR ESTABLISHING A PREDETERMINED ALLOWABLE TEMPERATURE DIFFERENCE BETWEEN THE FLUID LEAVING EACH GROUP OF TUBES AND THE FLUID LEAVING THE SECTIONS; MEANS RESPONSIVE TO SAID COMPARING MEANS FOR OPERATING A SOOT BLOWER ASSOCIATED WITH A GROUP OF TUBES WHEN THE DIFFERENCE BE-
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) | 1969-06-27 | 1969-12-27 | 1970-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-06-27 | 1973-12-27 | 1974-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-06-27 | 1977-12-27 | 1978-06-28 | $7700.00 | Window Closed / Lapsed |