US2651615A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Clarification apparatus
Assignee: PROCESS ENGINEERS Inc
•
Filing: 1950-11-09
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Granted: 1953-09-08
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Expires: 1970-11-09
Abstract
No abstract record available.
Inventors
- 👤 Earl M Kelly
- 👤 Arthur M Kivari
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 10:31
CPC Classifications
B; B01; B01D; B01D21/00; B01D21/0018; B01D21/0039; B01D21/0042; B01D21/10; B01D21/12; B01D21/14; B01D21/16; B01D21/24; B01D21/2405; B01D21/2427; B01D21/2433; B01D21/2438; B01D21/245
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
168 words
IN A CLARIFICATION APPARATUS COMPRISING A TANK FOR CONTAINING A POOL OF LIQUID TO BE CLARIFIED AND IN WHICH SLUDGE SETTLES TO THE BOTTOM, A SLUDGE OUUTLET IN THE BOTTOM OF THE TANK, AND MEANS FOR MOVING THE SLUDGE ALONG THE BOTTOM OF THE TANK TO THE OUTLET, THE COMBINATION WHICH COMPRISES AN AIRLIFT IN THE TANK PROJECTING UPWARD NEAR THE OUTLET, MEANS IN THE TANK FOR ADMITTING SLUDGE INTO THE AIRLIFT FROM NEAR THE OUTLET, MEANS FOR INTRODUCING INCOMING FEED TO BE CLARIFIED INTO THE AIR-LIFTED SLUDGE PRIOR TO ITS DISCHARGE INTO THE TANK, MEANS FOR DISCHARGING THE RESULTING AERATED SLUDGE AND FEED INTO AN UPPER PORTION OF THE TANK NEAR THE UPPER END OF THE AIRLIFT JUST ABOVE THE ROOF DISPOSED AROUND THE AIRLIFT JUST ABOVE THE POINT AT WHICH THE SLUDGE IS INTRODUCED INTO THE AIRLIFT TO PREVENT THE MATERIAL BEING DRAWN INTO THE AIRLIFT FROM BECOMING DILUTED, AND MEANS FOR AERATING THE TANK CONTENTS OUTSIDE THE AIRLIFT DISPOSED IN THE TANK ABOVE THE ROOF.
Claim 2
Dependent Claim
168 words
IN A CLARIFICATION APPARATUS COMPRISING A TANK FOR CONTAINING A POOL OF LIQUID TO BE CLARIFIED AND IN WHICH SLUDGE SETTLES TO THE BOTTOM, A SLUDGE OUUTLET IN THE BOTTOM OF THE TANK, AND MEANS FOR MOVING THE SLUDGE ALONG THE BOTTOM OF THE TANK TO THE OUTLET, THE COMBINATION WHICH COMPRISES AN AIRLIFT IN THE TANK PROJECTING UPWARD NEAR THE OUTLET, MEANS IN THE TANK FOR ADMITTING SLUDGE INTO THE AIRLIFT FROM NEAR THE OUTLET, MEANS FOR INTRODUCING INCOMING FEED TO BE CLARIFIED INTO THE AIR-LIFTED SLUDGE PRIOR TO ITS DISCHARGE INTO THE TANK, MEANS FOR DISCHARGING THE RESULTING AERATED SLUDGE AND FEED INTO AN UPPER PORTION OF THE TANK NEAR THE UPPER END OF THE AIRLIFT JUST ABOVE THE ROOF DISPOSED AROUND THE AIRLIFT JUST ABOVE THE POINT AT WHICH THE SLUDGE IS INTRODUCED INTO THE AIRLIFT TO PREVENT THE MATERIAL BEING DRAWN INTO THE AIRLIFT FROM BECOMING DILUTED, AND MEANS FOR AERATING THE TANK CONTENTS OUTSIDE THE AIRLIFT DISPOSED IN THE TANK ABOVE THE ROOF.
References Cited (Backward Citations)
US2129267A
Cited
US2077907A
Cited
US2076529A
Cited
US2110721A
Cited
US2249049A
Cited
US2370356A
Cited
US2477459A
Cited
US2568452A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-09-07 | 1957-03-09 | 1957-09-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-09-07 | 1961-03-09 | 1961-09-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-09-07 | 1965-03-09 | 1965-09-08 | $7700.00 | Window Closed / Lapsed |