US3725209A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Centrifugal distillation system
Assignee: Individual
•
Filing: 1970-08-11
•
Granted: 1973-04-03
•
Expires: 1990-08-11
Abstract
Abstract DISTILLATION OF FRESH WATER FROM SEAWATER BY INTRODUCING THE SEAWATER INTO AN EVAPORATIN ZONE DEFINED IN TE CENTRAL PORTION OF A SEALED ROTARY DRUM TO VAPORIZE WATER INTO A VAPOR SPACE WITHIN THE DRUM, AND CONFINING UNEVAPORATED LIQUID IN THE EVAPORATING ZONE WHILE CENRRIFUGALLY COMPRESSING VAPOR IN A CONDENSING ZONE AROUND HE EVAPORATING ZONE AND CONDENSING THE VAPOR ON HEAT EXCHANGE COILS WITH COOLER LIQUID CIRCULATED THERETHROUGH. IN A ONE-STAGE EMBODIMENT, COLLECTED LIQUID FROM THE EVAPORATING ZONE IS CIRCULATED THROUGH THE COILS, WHILE MODIFIED EMBODIMENTS USE SIMILAR ROTARY DRUMS AS HEAT PUMPS FOR PREPARING LIQUID FOR DISTILLATION IN AT LEAST ONE PRELIMINARY STAGE.
Inventors
- 👤 F Rosa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 01:11
CPC Classifications
B; B01; B01D; B01D3/00; B01D3/08; C; C02; C02F; C02F1/00; C02F1/02; C02F1/04; Y; Y10; Y10S; Y10S159/00; Y10S159/40; Y10S159/42
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-04-02 | 1976-10-02 | 1977-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-02 | 1980-10-02 | 1981-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-02 | 1984-10-02 | 1985-04-03 | $7700.00 | Window Closed / Lapsed |