US3135249A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Recirculation system and method for vapor generator
Assignee: Combustion Engineering Inc
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Filing: 1961-07-27
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Granted: 1964-06-02
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Expires: 1981-07-27
Abstract
No abstract record available.
Inventors
- 👤 Wilburt W Schroedter
- 👤 Jr Edward L Kochey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 02:03
CPC Classifications
F; F22; F22B; F22B29/00; F22B29/02; F22B29/023; F22B29/026; F22B35/00; F22B35/06; F22B35/10; F22B35/12; F22B35/125
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
149 words
IN A MODIFIED ONCE-THROUGH FLOW VAPOR GENERATOR OPERATING AT, BELOW AND ABOVE A PREDETERMINED LOAD POINT, AND HAVING A FURNACE FOR PRODUCING HOT COMBUSTION GASES, THE METHOD OF PROVIDING STRAIGHT-THROUGH FLOW OF THE WORKING FLUID THROUGH A CONTINUOUS PATH OF SAID FLUID INCLUDING SEVERAL HEATING SECTIONS, WHEN OPERATING THE VAPOR GENERATOR ABOVE SAID PREDETERMINED LOAD POINT, AND IN ADDITION, PROVIDING RECIRCULATED FLUID FLOW AROUND A SECOND HEATING SECTION OF SAID PATH WHEN OPERATING BELOW SAID PREDETERMINED LOAD POINT, SAID SECOND HEATING SECTION HAVING A FLUID FLOW RESISTANCE DIRECTLY VARYING WITH LOAD, THE STEPS COMPRISING: FORCING A STREAM OF WORKING FLUID THROUGH A FIRST SECTION OF SAID PATH IN HEAT ABSORBING RELATION WITH SAID GASES TO ESTABLISH A FIRST FLUID PRESSURE AT THE OUTLET END OF SAID FIRST SECTION; THEREAFTER WHILE OPERATING WITHIN A LOWER LOAD RANGE AND UP TO SAID PREDETERMINED LOAD POINT FORCING SAID HEATED FLUID THROUGH A
Claim 2
Dependent Claim
149 words
IN A MODIFIED ONCE-THROUGH FLOW VAPOR GENERATOR OPERATING AT, BELOW AND ABOVE A PREDETERMINED LOAD POINT, AND HAVING A FURNACE FOR PRODUCING HOT COMBUSTION GASES, THE METHOD OF PROVIDING STRAIGHT-THROUGH FLOW OF THE WORKING FLUID THROUGH A CONTINUOUS PATH OF SAID FLUID INCLUDING SEVERAL HEATING SECTIONS, WHEN OPERATING THE VAPOR GENERATOR ABOVE SAID PREDETERMINED LOAD POINT, AND IN ADDITION, PROVIDING RECIRCULATED FLUID FLOW AROUND A SECOND HEATING SECTION OF SAID PATH WHEN OPERATING BELOW SAID PREDETERMINED LOAD POINT, SAID SECOND HEATING SECTION HAVING A FLUID FLOW RESISTANCE DIRECTLY VARYING WITH LOAD, THE STEPS COMPRISING: FORCING A STREAM OF WORKING FLUID THROUGH A FIRST SECTION OF SAID PATH IN HEAT ABSORBING RELATION WITH SAID GASES TO ESTABLISH A FIRST FLUID PRESSURE AT THE OUTLET END OF SAID FIRST SECTION; THEREAFTER WHILE OPERATING WITHIN A LOWER LOAD RANGE AND UP TO SAID PREDETERMINED LOAD POINT FORCING SAID HEATED FLUID THROUGH A
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) | 1967-06-02 | 1967-12-02 | 1968-06-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-06-02 | 1971-12-02 | 1972-06-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-06-02 | 1975-12-02 | 1976-06-02 | $7700.00 | Window Closed / Lapsed |