Patent US2880146A successfully refreshed from Google Patents.
US2880146A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for evaporating fluids
Assignee: Foster Wheeler Inc
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Filing: 1953-10-16
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Granted: 1959-03-31
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Expires: 1973-10-16
Abstract
No abstract record available.
Inventors
- 👤 John M West
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 11:15
CPC Classifications
B; B01; B01D; B01D1/00; B01D1/02; Y; Y10; Y10S; Y10S203/00; Y10S203/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
109 words
APPARATUS FOR PRODUCING A PURE VAPOR, COMPRISING A FIRST EVAPORATOR SUPPLIED WITH A LIQUID, A SECOND EVAPORATOR, MEANS COMMUNICATING WITH BOTH SAID EVAPORATORS FOR DELIVERING PREDETERMINED AMOUNTS OF LIQUID FROM SAID FIRST EVAPORATOR TO SAID SECOND EVAPORATOR, MEANS FOR INDIRECTLY HEATING THE LIQUID IN SAID FIRST AND SECOND EVAPORATORS TO PRODUCE VAPOR IN EACH OF SAID EVAPORATORS, MEANS FOR WITHDRAWING FROM THE FIRST EVAPORATOR ALL OF THE VAPOR GENERATED THEREIN FOR USE, BLOW-DOWN MEANS IN SAID SECOND EVAPORATOR FOR DISCHARGING LIQUID THEREFROM, AND MEANS FOR PASSING VAPOR GENERATED IN SAID SECOND EVAPORATOR IN DIRECT HEAT EXCHANGE RELATIONSHIP WITH THE LIQUID SUPPLIED TO THE FIRST EVAPORATOR TO PREHEAT SAID LIQUID.
Claim 2
Dependent Claim
109 words
APPARATUS FOR PRODUCING A PURE VAPOR, COMPRISING A FIRST EVAPORATOR SUPPLIED WITH A LIQUID, A SECOND EVAPORATOR, MEANS COMMUNICATING WITH BOTH SAID EVAPORATORS FOR DELIVERING PREDETERMINED AMOUNTS OF LIQUID FROM SAID FIRST EVAPORATOR TO SAID SECOND EVAPORATOR, MEANS FOR INDIRECTLY HEATING THE LIQUID IN SAID FIRST AND SECOND EVAPORATORS TO PRODUCE VAPOR IN EACH OF SAID EVAPORATORS, MEANS FOR WITHDRAWING FROM THE FIRST EVAPORATOR ALL OF THE VAPOR GENERATED THEREIN FOR USE, BLOW-DOWN MEANS IN SAID SECOND EVAPORATOR FOR DISCHARGING LIQUID THEREFROM, AND MEANS FOR PASSING VAPOR GENERATED IN SAID SECOND EVAPORATOR IN DIRECT HEAT EXCHANGE RELATIONSHIP WITH THE LIQUID SUPPLIED TO THE FIRST EVAPORATOR TO PREHEAT SAID LIQUID.
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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) | 1962-03-30 | 1962-09-29 | 1963-03-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-03-30 | 1966-09-29 | 1967-03-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-03-30 | 1970-09-29 | 1971-03-31 | $7700.00 | Window Closed / Lapsed |