US3135250A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Steam generator utilizing a recirculating system
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
- 👤 John I Argersinger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 18:00
CPC Classifications
F; F22; F22G; F22G5/00; F22G5/02; F22B; F22B29/00; F22B29/02; F22B29/023; F22B29/026; F22B29/06; F22B29/12; F22B35/00; F22B35/06; F22B35/10; F22B35/12; F22B35/125; F22G5/06; F22G5/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
139 words
IN A ONCE-THROUGH STEAM GENERATOR, A THROUGH-FLOW SYSTEM SUPPLYING FLUID TO A TURBINE, A FURNACE, FUEL BURNING MEANS ASSOCIATED WITH SAID FURNACE, PART OF SAID THROUGH-FLOW SYSTEM RESIDING IN SAID FURNACE, A FEEDPUMP FOR SUPPLYING FLUID TO SAID THROUGH-FLOW SYSTEM, A RECIRCULATING SYSTEM AROUND A PORTION OF SAID THROUGH-FLOW SYSTEM SO THAT SOME OF THE FLUID FLOWING IN SAID THROUGH-FLOW SYSTEM CAN BE WITHDRAWN THROUGH SAID RECIRCULATING SYSTEM AND MADE TO FLOW THROUGH SAID PORTION AGAIN, A FIRST PUMP LOCATED IN SAID PORTION OF THE THROUGH-FLOW SYSTEM, SAID FIRST PUMP HAVING A LIMITED CAPACITY WHICH IS JUST SUFFICIENT TO MAINTAIN FLOW THROUGH SAID RECIRCULATING SYSTEM UNTIL THE STEAM GENERATOR IS OPERATING AT A PREDETERMINED PERCENTAGE OF FULL LOAD CAPACITY, AND ABOVE SAID PREDETERMINED PERCENTAGE SAID FIRST PUMP ACTS AS A RESTRICTION IN THE THROUGH-FLOW SYSTEM, MEANS FOR AUTOMATICALLY DEACTI-
Claim 2
Dependent Claim
139 words
IN A ONCE-THROUGH STEAM GENERATOR, A THROUGH-FLOW SYSTEM SUPPLYING FLUID TO A TURBINE, A FURNACE, FUEL BURNING MEANS ASSOCIATED WITH SAID FURNACE, PART OF SAID THROUGH-FLOW SYSTEM RESIDING IN SAID FURNACE, A FEEDPUMP FOR SUPPLYING FLUID TO SAID THROUGH-FLOW SYSTEM, A RECIRCULATING SYSTEM AROUND A PORTION OF SAID THROUGH-FLOW SYSTEM SO THAT SOME OF THE FLUID FLOWING IN SAID THROUGH-FLOW SYSTEM CAN BE WITHDRAWN THROUGH SAID RECIRCULATING SYSTEM AND MADE TO FLOW THROUGH SAID PORTION AGAIN, A FIRST PUMP LOCATED IN SAID PORTION OF THE THROUGH-FLOW SYSTEM, SAID FIRST PUMP HAVING A LIMITED CAPACITY WHICH IS JUST SUFFICIENT TO MAINTAIN FLOW THROUGH SAID RECIRCULATING SYSTEM UNTIL THE STEAM GENERATOR IS OPERATING AT A PREDETERMINED PERCENTAGE OF FULL LOAD CAPACITY, AND ABOVE SAID PREDETERMINED PERCENTAGE SAID FIRST PUMP ACTS AS A RESTRICTION IN THE THROUGH-FLOW SYSTEM, MEANS FOR AUTOMATICALLY DEACTI-
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 |