US2994647A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flash evaporator
Assignee: AMF Inc
•
Filing: 1958-03-31
•
Granted: 1961-08-01
•
Expires: 1978-03-31
Abstract
No abstract record available.
Inventors
- 👤 William R Williamson
- 👤 Fraser Norman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 22:11
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/02; C02F1/04; B; B01; B01D; B01D1/00; B01D1/30; B01D1/305; B01D3/00; B01D3/06; B01D5/00; B01D5/0003; B01D5/0012; C02F1/16; Y; Y10; Y10S; Y10S159/00; Y10S159/35; Y10S203/00; Y10S203/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
121 words
A FLASH EVAPORATOR COMPRISING A CLOSED OUTER SHELL, MEANS FOR ESTABLISHING A PARTIAL VACUUM WITHIN SAID OUTER SHELL, A SUBSTANTIALLY VERTICAL INNER SHELL WHICH IS CLOSED AT THE BOTTOM AND OPEN AT THE TOP AND WHICH EXTENDS UPWARDLY INTO SAID OUTER SHELL IN SPACED RELATIONSHIP TO THE SIDES THEREOF TO DEFINE THEREWITH AN UNOBSTRUCTED ANNULAR CHAMBER TO ACCOMMODATE A SWIRLING BODY OF LIQUID, MEANS FOR INTRODUCING A LIQUID TO BE EVAPORATED TO THE INNER SHELL SO AS TO ESTABLISH A BODY OF THE LIQUID THEREIN WHICH SPILLS OVER THE OPEN TOP OF THE INNER SHELL, THE SAID SURFACE BEING DEFINED ABOVE THE LIQUID INTRODUCING MEANS, AND MEANS FOR DISCHARGING FROM THE OUTER SHELL LIQUID WHICH SPILLS OVER THE SAID INNER SHELL.
Claim 2
Dependent Claim
121 words
A FLASH EVAPORATOR COMPRISING A CLOSED OUTER SHELL, MEANS FOR ESTABLISHING A PARTIAL VACUUM WITHIN SAID OUTER SHELL, A SUBSTANTIALLY VERTICAL INNER SHELL WHICH IS CLOSED AT THE BOTTOM AND OPEN AT THE TOP AND WHICH EXTENDS UPWARDLY INTO SAID OUTER SHELL IN SPACED RELATIONSHIP TO THE SIDES THEREOF TO DEFINE THEREWITH AN UNOBSTRUCTED ANNULAR CHAMBER TO ACCOMMODATE A SWIRLING BODY OF LIQUID, MEANS FOR INTRODUCING A LIQUID TO BE EVAPORATED TO THE INNER SHELL SO AS TO ESTABLISH A BODY OF THE LIQUID THEREIN WHICH SPILLS OVER THE OPEN TOP OF THE INNER SHELL, THE SAID SURFACE BEING DEFINED ABOVE THE LIQUID INTRODUCING MEANS, AND MEANS FOR DISCHARGING FROM THE OUTER SHELL LIQUID WHICH SPILLS OVER THE SAID INNER SHELL.
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) | 1964-07-31 | 1965-01-30 | 1965-08-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-07-31 | 1969-01-30 | 1969-08-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-07-31 | 1973-01-30 | 1973-08-01 | $7700.00 | Window Closed / Lapsed |