US3196844A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for controlling a forced flow steam generator
Assignee: Sulzer AG
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Filing: 1961-03-27
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Granted: 1965-07-27
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Expires: 1981-03-27
Abstract
No abstract record available.
Inventors
- 👤 Sulzer Jean-Th
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 05:26
CPC Classifications
F; F22; F22D; F22D5/00; F22D5/26; F22D5/30; F22B; F22B35/00; F22B35/06; F22B35/10; F22B35/12; F23; F23N; F23N1/00; F23N1/08; F23N1/085; Y; Y10; Y10S; Y10S148/00; Y10S148/102
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
110 words
A METHOD OF CONTROLLING THE OPERATION OF A FORCED FLOW STEAM GENERATOR OPERATING AT LEAST AT THE CRITICAL PRESSURE OF WATER AND UNDER VARIABLE LOAD CONDITIONS AND HAVING A TUBULAR HEAT TRANSFER SYSTEM INCLUDING AN EVAPORATING SECTION FOLLOWED BY A SUPERHEATING SECTION AND MEANS FOR SUPPLYING FEEDWATER AND HEAT AT VARIABLE RATES TO SAID HEAT TRANSFER SYSTEM, THE METHOD COMPRISING THE STEPS: OF ADJUSTING ONE OF SAID SUPPLY MEANS TO CORRESPOND TO THE DESIRED STEAM OUTPUT, OF DIRECTLY MEASURING THE ABSOLUTE DENSITY OF THE STEAM AT A SINGLE LOCATION BETWEEN SAID EVAPORATING AND SUPERHEATING SECTIONS, AND OF CONTROLLING THE SECOND SUPPLY MEANS IN RESPONSE TO THE MEASURED ABSOLUTE STEAM DENSITY.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-07-26 | 1969-01-25 | 1969-07-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-07-26 | 1973-01-25 | 1973-07-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-07-26 | 1977-01-25 | 1977-07-27 | $7700.00 | Window Closed / Lapsed |