Patent US2604445A successfully refreshed from Google Patents.
US2604445A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sewage flotation and aeration system
Assignee: EDWARD S LANSING Corp
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Filing: 1947-08-12
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Granted: 1952-07-22
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Expires: 1967-08-12
Abstract
No abstract record available.
Inventors
- 👤 Edward S Lansing
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 10:46
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/24; C02F1/42
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
169 words
AN APPARATUS FOR AERATING LIQUIDS COMPRISING A RECEPTACLE FOR LIQUIDS, MEANS FOR INTRODUCING LIQUID TO BE TREATED INTO SAID RECEPTACLE, MEANS NEAR THE TOP OF SAID RECEPTACLE FOR DISCHARGING LIQUID FROM SAID RECEPTACLE AND FOR MAINTAINING THE LIQUID AT ABOUT A PREDETERMINED LEVEL THEREIN, AT LEAST ONE ASPIRATING DEVICE IN SAID RECEPTACLE NEAR THE BOTTOM THEROF, SAID ASPIRATING DEVICE HAVING A PAIR OF JETS, A PUMP FOR WITHDRAWING LIQUID FROM SAID RECEPTACLE AND INJECTING SAID WITHDRAWN LIQUID INTO THE LIQUID IN SAID RECEPTACLE THROUGH ONE OF SAID JETS TO CREATE A REDUCED PRESSURE AT THE OTHER JET, A CONDUIT CONNECTED TO SAID RECEPTACLE AND TO SAID OTHER JET AND HAVING A PORTION DISPOSED AT ABOUT THE SAME LEVEL AS SAID DISCHARGE MEANS, A RESTRICTED INLET IN SAID PORTION OF SAID CONDUIT THROUGH WHICH AIR IS DRAWN FROM THE ATMOSPHERE TO BE ENTRAINED IN THE LIQUID IN SAID CONDUIT AND INTRODUCED THROUGH SAID OTHER NOZZLE INTO SAID RECEPTACLE, AND MEANS FOR REMOVING FLOATING SOLIDS FROM THE SURFACE OF THE LIQUIDS.
Claim 2
Independent Claim
169 words
AN APPARATUS FOR AERATING LIQUIDS COMPRISING A RECEPTACLE FOR LIQUIDS, MEANS FOR INTRODUCING LIQUID TO BE TREATED INTO SAID RECEPTACLE, MEANS NEAR THE TOP OF SAID RECEPTACLE FOR DISCHARGING LIQUID FROM SAID RECEPTACLE AND FOR MAINTAINING THE LIQUID AT ABOUT A PREDETERMINED LEVEL THEREIN, AT LEAST ONE ASPIRATING DEVICE IN SAID RECEPTACLE NEAR THE BOTTOM THEROF, SAID ASPIRATING DEVICE HAVING A PAIR OF JETS, A PUMP FOR WITHDRAWING LIQUID FROM SAID RECEPTACLE AND INJECTING SAID WITHDRAWN LIQUID INTO THE LIQUID IN SAID RECEPTACLE THROUGH ONE OF SAID JETS TO CREATE A REDUCED PRESSURE AT THE OTHER JET, A CONDUIT CONNECTED TO SAID RECEPTACLE AND TO SAID OTHER JET AND HAVING A PORTION DISPOSED AT ABOUT THE SAME LEVEL AS SAID DISCHARGE MEANS, A RESTRICTED INLET IN SAID PORTION OF SAID CONDUIT THROUGH WHICH AIR IS DRAWN FROM THE ATMOSPHERE TO BE ENTRAINED IN THE LIQUID IN SAID CONDUIT AND INTRODUCED THROUGH SAID OTHER NOZZLE INTO SAID RECEPTACLE, AND MEANS FOR REMOVING FLOATING SOLIDS FROM THE SURFACE OF THE LIQUIDS.
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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) | 1955-07-22 | 1956-01-21 | 1956-07-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-07-22 | 1960-01-21 | 1960-07-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-07-22 | 1964-01-21 | 1964-07-22 | $7700.00 | Window Closed / Lapsed |