Patent US3274979A successfully refreshed from Google Patents.
US3274979A
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: 1966-09-27
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Expires: 1984-09-28
Abstract
No abstract record available.
Inventors
- 👤 Elwood P Petit
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 06:50
CPC Classifications
F; F28; F28G; F28G3/00; F28G3/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
101 words
A VAPOR GENERATOR FURNACE COMPRISING: MEANS FOR BURNING AN ASH BEARING FUEL WITHIN THE FURNACE; A PLURALITY OF GROUPS OF TUBES LINING THE WALLS OF SAID FURNACE IN PARALLEL FLOW RELATION; MEANS FOR PASSING FLUID THROUGH SAID TUBES WHEREBY THE TEMPERATURE OF THE FLUID IS INCREASED; MEANS FOR SENSING THE TOTAL HEAT ABSORBED BY THE FLUID PASSING THROUGH EACH OF SAID GROUP OF TUBES; AT LEAST ONE SOOT BLOWER ASSOCIATED WITH EACH GROUP OF TUBES; AND MEANS FOR OPERATING A SOOT BLOWER ASSOCIATED WITH A GROUP OF TUBES IN RESPONSE TO THE HEAT ABSAORPTION SENSING MEANS RELATED TO THE CORRESPONDING GROUP.
Claim 2
Dependent Claim
101 words
A VAPOR GENERATOR FURNACE COMPRISING: MEANS FOR BURNING AN ASH BEARING FUEL WITHIN THE FURNACE; A PLURALITY OF GROUPS OF TUBES LINING THE WALLS OF SAID FURNACE IN PARALLEL FLOW RELATION; MEANS FOR PASSING FLUID THROUGH SAID TUBES WHEREBY THE TEMPERATURE OF THE FLUID IS INCREASED; MEANS FOR SENSING THE TOTAL HEAT ABSORBED BY THE FLUID PASSING THROUGH EACH OF SAID GROUP OF TUBES; AT LEAST ONE SOOT BLOWER ASSOCIATED WITH EACH GROUP OF TUBES; AND MEANS FOR OPERATING A SOOT BLOWER ASSOCIATED WITH A GROUP OF TUBES IN RESPONSE TO THE HEAT ABSAORPTION SENSING MEANS RELATED TO THE CORRESPONDING GROUP.
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) | 1969-09-26 | 1970-03-28 | 1970-09-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-26 | 1974-03-28 | 1974-09-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-26 | 1978-03-28 | 1978-09-27 | $7700.00 | Window Closed / Lapsed |