US3231009A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of and means for operating a plant wherein a liquid is heated by the admixture of steam
Assignee: Alpura AG
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Filing: 1963-04-23
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Granted: 1966-01-25
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Expires: 1983-04-23
Abstract
No abstract record available.
Inventors
- 👤 Willi Loeliger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 09:35
CPC Classifications
A; A23; A23B; A23B11/00; A23B11/10; A23B11/12; A23B11/13; A23B11/133; A23B11/137; A23B2/00; A23B2/40; A23B2/42; A23B2/46; G; G05; G05D; G05D11/00; G05D11/02; G05D11/13; G05D11/131
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
105 words
A METHOD OF MAINTAINING A PREDETERMINED RELATION BETWEEN THE SPECIFIC GRAVITIES OF A CONTINUOUSLY FLOWING LIQUID ENTERING AND LEAVING AN APPARTUS WHEREIN SAID LIQUID IS CONTINUOUSLY HEATED BY THE ADMIXTURE OF STEAM AND SUBSEQUENTLY COOLED BY EXPANSION AND PARTIAL EVAPORATION, COMPRISING: PRODUCING A CONTROL SIGNAL CORRESPONDING TO THE TEMPERATURE OF THE LIQUID ENTERING SAID APPARATUS, PRODUCING CONTROL SIGNAL CORRESPONDING TO THE TEMPERATURE OF THE LIQUID LEAVING SAID APPARATUS, MODIFYING OF SAID SIGNALS IN RESPONSE TO THE SECOND SIGNAL TO DECREASE THE FIRST SIGNAL UPON AN INCREASE OF THE SECOND SIGNAL, AND VICE VERSA, AND CONTROLLING ONE OF SAID TEMPERATURES IN RESPONSE TO THE MODIFIED SIGNALS.
Claim 2
Independent Claim
105 words
A METHOD OF MAINTAINING A PREDETERMINED RELATION BETWEEN THE SPECIFIC GRAVITIES OF A CONTINUOUSLY FLOWING LIQUID ENTERING AND LEAVING AN APPARTUS WHEREIN SAID LIQUID IS CONTINUOUSLY HEATED BY THE ADMIXTURE OF STEAM AND SUBSEQUENTLY COOLED BY EXPANSION AND PARTIAL EVAPORATION, COMPRISING: PRODUCING A CONTROL SIGNAL CORRESPONDING TO THE TEMPERATURE OF THE LIQUID ENTERING SAID APPARATUS, PRODUCING CONTROL SIGNAL CORRESPONDING TO THE TEMPERATURE OF THE LIQUID LEAVING SAID APPARATUS, MODIFYING OF SAID SIGNALS IN RESPONSE TO THE SECOND SIGNAL TO DECREASE THE FIRST SIGNAL UPON AN INCREASE OF THE SECOND SIGNAL, AND VICE VERSA, AND CONTROLLING ONE OF SAID TEMPERATURES IN RESPONSE TO THE MODIFIED SIGNALS.
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) | 1969-01-24 | 1969-07-26 | 1970-01-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-24 | 1973-07-26 | 1974-01-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-24 | 1977-07-26 | 1978-01-25 | $7700.00 | Window Closed / Lapsed |