Patent US5733431A successfully refreshed from Google Patents.
Patent US5348648A successfully refreshed from Google Patents.
US5348648A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flotation device for the treatment of water polluted by hydrocarbons
Assignee: Carbonisation et Charbons Actifs CECA SA
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Filing: 1992-10-02
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Granted: 1994-09-20
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Expires: 2012-10-02
Abstract
Abstract A flotation device for the separation of nonmiscible liquids, particularly the separation of water and hydrocarbon pollutants, comprising a cylindrical tank divided by partitions into a feed flow rate homogenization compartment, at least one flotation cell equipped with a cyclone-turbine and a skimming chamber with self-stabilizing chute, and a tranquilization compartment, characterized in that said cyclone-turbine is equipped with a throttling disk and vortex stabilization baffles, and that the skimming chute is equipped with lateral floats and counterweights.
Inventors
- 👤 Adnan Hamdan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 19:52
CPC Classifications
B; B03; B03D; B03D1/00; B03D1/14; B03D1/16; B01; B01D; B01D1/00; B01D1/16; B01D1/20; B01D17/00; B01D17/02; B01D17/0205; B01D17/0208; B01D17/0214; B01D17/0217; B03D1/1443; B03D1/1462; B03D1/1493; B03D1/1412; C; C02; C02F; C02F1/00; C02F1/24; C02F2101/00; C02F2101/30; C02F2101/32
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
157 words
A flotation device for the separation of oils, creams, or froths floating on the surface of aqueous liquids, comprising a cylindrical tank divided by partitions into a feed-flow rate homogenization compartment, at least one flotation cell equipped with (a) a cyclone-turbine comprising a rotor with mobile blades housed in a stator cage and a stack positioned above the cyclone-turbine and (b) a skimming chamber with a self-stabilizing chute, and a tranquilization compartment, said cyclone-turbine having a throttling disk positioned between said stator cage and said stack and vortex stabilization baffles attached to the inside wall of said stack, said skimming chute being displaced vertically with respect to the surface of the aqueous liquid in said at least one flotation cell, and said skimming chute being self-stabilizing and comprising an exterior skirt having attached thereto two counterweights, two lateral floats, and two vertical floats which act to maintain said skimming chute at the surface of the aqueous liquids.
Claim 2
Dependent Claim
157 words
A flotation device for the separation of oils, creams, or froths floating on the surface of aqueous liquids, comprising a cylindrical tank divided by partitions into a feed-flow rate homogenization compartment, at least one flotation cell equipped with (a) a cyclone-turbine comprising a rotor with mobile blades housed in a stator cage and a stack positioned above the cyclone-turbine and (b) a skimming chamber with a self-stabilizing chute, and a tranquilization compartment, said cyclone-turbine having a throttling disk positioned between said stator cage and said stack and vortex stabilization baffles attached to the inside wall of said stack, said skimming chute being displaced vertically with respect to the surface of the aqueous liquid in said at least one flotation cell, and said skimming chute being self-stabilizing and comprising an exterior skirt having attached thereto two counterweights, two lateral floats, and two vertical floats which act to maintain said skimming chute at the surface of the aqueous liquids.
Claim 3
Dependent Claim
60 words
The flotation device of claim 1 also including a connecting pot attached to said flotation device at said tranquilization compartment to assure a seal between a capacity under gas cover and the exterior, said pot comprising a cylindrical body inside of which extends vertically an outlet pipe, having an adjustable sill displaced vertically in relation to the interior upper end.
References Cited (Backward Citations)
US2274658A
Cited
GB810521A
Cited
US3951816A
Cited
US4404912A
Cited
US4721562A
Cited
US4990246A
Cited
US4802592A
Cited
DE3808154A1
Cited
CA2022899A1
Cited
US5104520A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1997-09-19 | 1998-03-21 | 1998-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-09-19 | 2002-03-21 | 2002-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-09-19 | 2006-03-21 | 2006-09-20 | $7700.00 | Window Closed / Lapsed |