Patent US2077849A successfully refreshed from Google Patents.
US2649412A
Expired / Lapsed
US
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Clarification
Assignee: PROCESS ENGINEERS Inc
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Filing: 1951-04-13
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Granted: 1953-08-18
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Expires: 1971-04-13
Abstract
No abstract record available.
Inventors
- 👤 Arthur M Kivari
- 👤 Earl M Kelly
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 20:51
CPC Classifications
B; B01; B01D; B01D21/00; B01D21/0018; B01D21/003; B01D21/02; B01D21/04; B01D21/06; B01D21/24; B01D21/2405; B01D21/2427; B01D21/245
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
110 words
IN APPARATUS FOR SEPARATING SOLIDS FROM SEWAGE BY SETTLEMENT AND INCLUDING AND AN OUTER SEDIING AN INNER COMPARTMENT AND AN OUTER SEDIMENTATION COMPARTMENT DISPOSED AROUND IT, THE TWO COMPARTMENTS COMMUNICATING WITH EACH OTHER JUST ABOVE THE TANK BOTTOM BUT SEPARATED FROM EACH OTHER AT HIGHER LEVELS BY AN ANNULAR IMPERFORATE BAFFLE, MEANS FOR INTRODUCING THE SEWAGE INTO THE INNER COMPARTMENT, AND MEANS FOR WITHDRAWING CLARIFIED SEWAGE FROM AN UPPER PORTION OF THE OUTER COMPARTMENT, THE COMBINATION WHICH COMPRISES A SLUDGE POCKET LOCATED BELOW THE BOTTOM OF THE TANK AND AT A LEVEL LOWER THAN THAT OF THE BOTTOM OF THE BAFFLE WITHIN THE REGION WHICH BEGINS UNDERNEATH THE BAFFLE AND
Claim 2
Dependent Claim
110 words
IN APPARATUS FOR SEPARATING SOLIDS FROM SEWAGE BY SETTLEMENT AND INCLUDING AND AN OUTER SEDIING AN INNER COMPARTMENT AND AN OUTER SEDIMENTATION COMPARTMENT DISPOSED AROUND IT, THE TWO COMPARTMENTS COMMUNICATING WITH EACH OTHER JUST ABOVE THE TANK BOTTOM BUT SEPARATED FROM EACH OTHER AT HIGHER LEVELS BY AN ANNULAR IMPERFORATE BAFFLE, MEANS FOR INTRODUCING THE SEWAGE INTO THE INNER COMPARTMENT, AND MEANS FOR WITHDRAWING CLARIFIED SEWAGE FROM AN UPPER PORTION OF THE OUTER COMPARTMENT, THE COMBINATION WHICH COMPRISES A SLUDGE POCKET LOCATED BELOW THE BOTTOM OF THE TANK AND AT A LEVEL LOWER THAN THAT OF THE BOTTOM OF THE BAFFLE WITHIN THE REGION WHICH BEGINS UNDERNEATH THE BAFFLE AND
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) | 1956-08-17 | 1957-02-16 | 1957-08-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-08-17 | 1961-02-16 | 1961-08-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-08-17 | 1965-02-16 | 1965-08-18 | $7700.00 | Window Closed / Lapsed |