Patent US2749302A successfully refreshed from Google Patents.
US2749302A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combination settling
Assignee: —
•
Filing: —
•
Granted: 1956-06-05
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Expires: 1973-06-05
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 18:03
CPC Classifications
B; B01; B01D; B01D21/00; B01D21/02; B01D21/0039; B01D21/0042; B01D21/04; B01D21/06; B01D21/24; B01D21/2405; B01D21/2427; B01D21/245; B01D21/30; B01D21/34
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
113 words
IN A SYSTEM FOR THE TREATMENT OF WASTE LIQUIDS CONTAINING SUSPENDED SOLIDS, A SETTLING TANK, OUTLET MEANS ADJACENT THE BOTTOM OF THE TANK TO RECEIVE SEDIMENTARY SOLIDS AND MEANS TO URGE THE SOLIDS TOWARD SAID OUTLET, INFLOW MEANS TO INTRODUCE INTO THE TANK LIQUIDS CONTAINING SUSPENDED SOLIDS, A V-SHAPED WEIR AT ONE END OF THE TANK, A RECTANGULAR WEIR AT THE OTHER END OF THE TANK, SAID WEIRS BEING DISPOSED TO DISCHARGE LIQUID SIMULTANEOUSLY OVER A RANGE OF COMMON LIQUID LEVELS IN THE TANK, AND RECIRCULATING MEANS TO RECEIVE THE LIQUID PASSING OUT OF THE TANK VIA THE RECTANGULAR WEIR AND TO DISCHARGE SAID LIQUID BACK INTO THE TANK IN A RECIRCULATING CYCLE.
Claim 2
Dependent Claim
113 words
IN A SYSTEM FOR THE TREATMENT OF WASTE LIQUIDS CONTAINING SUSPENDED SOLIDS, A SETTLING TANK, OUTLET MEANS ADJACENT THE BOTTOM OF THE TANK TO RECEIVE SEDIMENTARY SOLIDS AND MEANS TO URGE THE SOLIDS TOWARD SAID OUTLET, INFLOW MEANS TO INTRODUCE INTO THE TANK LIQUIDS CONTAINING SUSPENDED SOLIDS, A V-SHAPED WEIR AT ONE END OF THE TANK, A RECTANGULAR WEIR AT THE OTHER END OF THE TANK, SAID WEIRS BEING DISPOSED TO DISCHARGE LIQUID SIMULTANEOUSLY OVER A RANGE OF COMMON LIQUID LEVELS IN THE TANK, AND RECIRCULATING MEANS TO RECEIVE THE LIQUID PASSING OUT OF THE TANK VIA THE RECTANGULAR WEIR AND TO DISCHARGE SAID LIQUID BACK INTO THE TANK IN A RECIRCULATING CYCLE.
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) | 1959-06-05 | 1959-12-05 | 1960-06-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-06-05 | 1963-12-05 | 1964-06-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-06-05 | 1967-12-05 | 1968-06-05 | $7700.00 | Window Closed / Lapsed |