US3333695A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid clarification method and apparatus for producing high density sludge
Assignee: Eimco Corp
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Filing: 1964-08-19
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Granted: 1967-08-01
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Expires: 1984-08-19
Abstract
No abstract record available.
Inventors
- 👤 Robert H Van Note
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:40
CPC Classifications
B; B01; B01D; B01D21/00; B01D21/02; B01D21/04; B01D21/06; B01D21/003; B01D21/0036; B01D21/24; B01D21/2427; B01D21/30; B01D21/32
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
97 words
THE IMPROVED METHOD FOR THE CLARIFICATION OF LIQUIDS CONTAINING SUSPENDED SOLIDS COMPRISING THE STEPS OF INTRODUCING SAID LIQUID INTO A POOL AND SUBJECTING IT TO SEDIMENTATION TO FORM IN SAID POOL A SETTLED SLUDGE OVERLAIN BY CLARIFED EFFLUENT, WITHDRAWING EFFLUENT FROM AN UPPER PORTION OF THE POOL, RAKING SETTLED SLUDGE OVER THE BOTTOM OF THE POOL TO A PERIPHERAL DISCHARGE OUTLET BY ENGAGING SAID SLUDGE WITH RAKES MOVING TOWARD AND PAST THE OUTLET, AND INTERMITTENTLY WITHDRAWING SLUDGE FROM THE POOL BY OPENING SAID OUTLET FOR A TIMED INTERVAL PRECEDING EACH MOVEMENT OF THE RAKES PAST SAID OUTLET.
Claim 2
Dependent Claim
106 words
APPARATUS FOR SEPARATING SOLIDS FROM LIQUIDS BY SEDIMENTATION COMPRISING A TANK, MEANS FOR INTRODUCING LIQUID INTO THE TANK, MEANS FOR WITHDRAWING CLARIFIED EFFLUENT FROM THE UPPER PORTION OF THE TANK, A NORMALLY CLOSED VALVED SLUDGE OUTLET ADJACENT THE BOTTOM OF THE TANK, RAKE MEANS MOUNTED FOR MOVEMENT OVER THE TANK BOTTOM FOR PUSHING SETTLED SLUDGE AHEAD OF SAID RAKES TOWARD SAID NORMALLY CLOSED VALVED SLUDGE OUTLET, AND MEANS FOR OPENING SAID NORMALLY CLOSED VALVED SLUDGE OUTLET UPON APPROACH OF SAID RAKES TO ENABLE WITHDRAWAL OF SLUDGE FROM IN FRONT OF SAID RAKES WHEREBY ONLY THE HIGHEST DENSITY SLUDGE ON THE BOTTOM OF SAID TANK IS REMOVED.
References Cited (Backward Citations)
CA616038A
Cited
US1392215A
Cited
GB333974A
Cited
US3006475A
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US3281594A
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US3166502A
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US3151848A
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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) | 1970-07-31 | 1971-01-30 | 1971-08-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-31 | 1975-01-30 | 1975-08-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-31 | 1979-01-30 | 1979-08-01 | $7700.00 | Window Closed / Lapsed |