US3144856A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Steam generating plant
Assignee: Sulzer AG
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Filing: 1960-11-10
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Granted: 1964-08-18
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Expires: 1980-11-10
Abstract
No abstract record available.
Inventors
- 👤 Brunner Alfred
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 04:11
CPC Classifications
G; G21; G21D; G21D5/00; G21D5/04; G21D5/08; F; F01; F01K; F01K7/00; F01K7/16; F01K7/18; F22; F22B; F22B1/00; F22B1/02; F22B1/08; F22B1/18; F22B1/1823; F22D; F22D11/00; Y; Y02; Y02E; Y02E30/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
181 words
A STEAM GENERATING PLANT COMPRISING DUCT MEANS, A HOT HEATING FLUID FLOWING THROUGH SAID DUCT MEANS, A PLURALITY OF STEAM GENERATORS PRODUCING STEAM AT DIFFERENT PRESSURES AND PLACED IN SAID DUCT MEANS IN SERIES RELATION WITH RESPECT TO THE FLOW OF THE HEATING FLUID FOR HEATING BY THE LATER, A SOURCE OF SUPPLY OF FEEDWATER AT A PRESSURE EXCEEDING THE OPERATING PRESSURE OF THE STEAM GENERATOR WHICH PRODUCES THE HIGHEST PRESSURE STEAM, A TUBULAR FEEDWATER HEATER CONNECTED TO SAID SOURCE FOR RECEIVING HIGH PRESSURE FEEDWATER THEREFROM, SAID FEEDWATER HEATER HAVING A PLURALITY OF PORTIONS PLACED IN SAID DUCT MEANS TO RECEIVE DIFFERENT AMOUNTS OF HEAT FROM SAID HEATING FLUID, EACH OF SAID STEAM GENERATORS HAVING AN INLET CONNECTED TO A DIFFERENT ONE OF SAID PORTIONS OF SAID FEEDWATER HEATER FOR RECEIVING FEEDWATER AT DIFFERENT TEMPERATURES THEREFROM, AND A THROTTLING MEANS INTERPOSED IN EACH OF SAID INLETS FOR MAINTAINING AN EQUAL PRESSURE IN ALL OF SAID FEEDWATER HEATER PORTIONS AND FOR INDIVIDUALLY REDUCING THE PRESSURE OF THE FEEDWATER LEAVING SAID FEEDWATER HEATER PORTIONS TO THE OPERATING PRESSURE OF THE RESPECTIVE STEAM GENERATOR.
Claim 2
Dependent Claim
181 words
A STEAM GENERATING PLANT COMPRISING DUCT MEANS, A HOT HEATING FLUID FLOWING THROUGH SAID DUCT MEANS, A PLURALITY OF STEAM GENERATORS PRODUCING STEAM AT DIFFERENT PRESSURES AND PLACED IN SAID DUCT MEANS IN SERIES RELATION WITH RESPECT TO THE FLOW OF THE HEATING FLUID FOR HEATING BY THE LATER, A SOURCE OF SUPPLY OF FEEDWATER AT A PRESSURE EXCEEDING THE OPERATING PRESSURE OF THE STEAM GENERATOR WHICH PRODUCES THE HIGHEST PRESSURE STEAM, A TUBULAR FEEDWATER HEATER CONNECTED TO SAID SOURCE FOR RECEIVING HIGH PRESSURE FEEDWATER THEREFROM, SAID FEEDWATER HEATER HAVING A PLURALITY OF PORTIONS PLACED IN SAID DUCT MEANS TO RECEIVE DIFFERENT AMOUNTS OF HEAT FROM SAID HEATING FLUID, EACH OF SAID STEAM GENERATORS HAVING AN INLET CONNECTED TO A DIFFERENT ONE OF SAID PORTIONS OF SAID FEEDWATER HEATER FOR RECEIVING FEEDWATER AT DIFFERENT TEMPERATURES THEREFROM, AND A THROTTLING MEANS INTERPOSED IN EACH OF SAID INLETS FOR MAINTAINING AN EQUAL PRESSURE IN ALL OF SAID FEEDWATER HEATER PORTIONS AND FOR INDIVIDUALLY REDUCING THE PRESSURE OF THE FEEDWATER LEAVING SAID FEEDWATER HEATER PORTIONS TO THE OPERATING PRESSURE OF THE RESPECTIVE STEAM GENERATOR.
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) | 1967-08-18 | 1968-02-17 | 1968-08-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-08-18 | 1972-02-17 | 1972-08-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-08-18 | 1976-02-17 | 1976-08-18 | $7700.00 | Window Closed / Lapsed |