US3342331A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flotation machine
Assignee: Individual
•
Filing: 1965-05-24
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Granted: 1967-09-19
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Expires: 1985-05-24
Abstract
No abstract record available.
Inventors
- 👤 Maxwell John Russell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 23:38
CPC Classifications
B; B03; B03D; B03D1/00; B03D1/14; B03D1/16; B03D1/1443; B03D1/1456; B03D1/1462; B03D1/1493; B03D1/24; B03D1/245; B03D1/02; B03D1/028
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
324 words
IN APPARATUS FOR CONDITIONING AN ORE PULP CONTAINING A FLOTATION AGENT AND SEPARATING A MINERAL THEREFROM, A MACHINE COMPRISING: A CYLINDRICAL FLOTATION TANK HAVING A SUBSTANTIALLY FLAT BOTTOM AND A CYLINDRICAL WALL TERMINATING IN AN EDGE DEFINING AN OPEN TOP; SUPERSTRUCTURE SUPPORTED ON SAID EDGE AND EXTENDING OVER SAID OPEN TOP; AN IMPELLER SHAFT SUPPORTED BY AND DEPENDING FROM SAID SUPERSTRUCTURE CENTRALLY OF SAID TANK; AN IMPELLER DRIVABLY MOUNTED ON THE LOWER END OF SAID SHAFT IN SPACED RELATION TO SAID BOTTOM AND INCLUDING BLADES INCLINED WITH RESPECT TO SAID BOTTOM; DRIVING MECHANISM ON SAID SUPERSTRUCTURE OPERABLY CONNECTED TO SAID SHAFT TO ROTATE SAID IMPELLER TO MOVE PULP DOWNWARDLY FROM REGIONS ABOVE SAID IMPELLER TO REGIONS BELOW SAID IMPELLER AND OUTWARDLY TOWARDS SAID CYLINDRICAL WALL; A FEED COLUMN ABOUT AND SPACED FROM SAID SHAFT BETWEEN SAID IMPELLER AND SAID OPEN TOP; AN INLET CONDUIT PASSING THROUGH AN OPENING IN SAID CYLINDRICAL WALL AND COMMUNICATING WITH SAID FEED COLUMN; AN AIR HEADER OF CIRCULAR FORMATION AND OF A DIAMETER LESS THAN SAID CYLINDRICAL WALL, SAID HEADER BEING MOUNTED ON SAID SUPERSTRUCTURE; A PLURALITY OF BUBBLE TUBES ANGULARLY SPACED APART AND DEPENDING FROM SAID HEADER IN CONNECTED RELATION THERETO AND SPACED FROM SAID CYLINDRICAL WALL; SAID BUBBLE TUBES EXTENDING BELOW THE LEVEL OF SAID IMPELLER AND HAVING RADIAL ORIFICES THEREIN BELOW SAID LEVEL; A PULP WEIR CARRIED BY SAID CYLINDRICAL WALL IN A PREDETERMINED RELATION TO SAID EDGE; A CIRCULAR FROTH LAUNDER OF U-SHAPED CROSS SECTION PRESENTING OPPOSED SPACED SIDE WALLS CONNECTED BY A BOTTOM WALL AND HAVING UPPER WEIR EDGES AT A PREDETERMINED LEVEL BELOW SAID TANK EDGE WITH THE OUTERMOST WEIR EDGE SPACED FROM SAID CYLINDRICAL WALL AND SAID BOTTOM WALL OF SAID LAUNDER BEING INCLINED WITH RESPECT TO SUCH TANK BOTTOM, SAID LAUNDER BEING MOUNTED ON SAID CYLINDRICAL WALL; AND AN OUTLET CONDUIT COMMUNICATING WITH SAID LAUNDER ADJACENT TO THE BOTTOM WALL AT THE LOWEST REGION THEREOF AND EXTENDING THROUGH SAID CYLINDRICAL WALL.
Claim 2
Dependent Claim
324 words
IN APPARATUS FOR CONDITIONING AN ORE PULP CONTAINING A FLOTATION AGENT AND SEPARATING A MINERAL THEREFROM, A MACHINE COMPRISING: A CYLINDRICAL FLOTATION TANK HAVING A SUBSTANTIALLY FLAT BOTTOM AND A CYLINDRICAL WALL TERMINATING IN AN EDGE DEFINING AN OPEN TOP; SUPERSTRUCTURE SUPPORTED ON SAID EDGE AND EXTENDING OVER SAID OPEN TOP; AN IMPELLER SHAFT SUPPORTED BY AND DEPENDING FROM SAID SUPERSTRUCTURE CENTRALLY OF SAID TANK; AN IMPELLER DRIVABLY MOUNTED ON THE LOWER END OF SAID SHAFT IN SPACED RELATION TO SAID BOTTOM AND INCLUDING BLADES INCLINED WITH RESPECT TO SAID BOTTOM; DRIVING MECHANISM ON SAID SUPERSTRUCTURE OPERABLY CONNECTED TO SAID SHAFT TO ROTATE SAID IMPELLER TO MOVE PULP DOWNWARDLY FROM REGIONS ABOVE SAID IMPELLER TO REGIONS BELOW SAID IMPELLER AND OUTWARDLY TOWARDS SAID CYLINDRICAL WALL; A FEED COLUMN ABOUT AND SPACED FROM SAID SHAFT BETWEEN SAID IMPELLER AND SAID OPEN TOP; AN INLET CONDUIT PASSING THROUGH AN OPENING IN SAID CYLINDRICAL WALL AND COMMUNICATING WITH SAID FEED COLUMN; AN AIR HEADER OF CIRCULAR FORMATION AND OF A DIAMETER LESS THAN SAID CYLINDRICAL WALL, SAID HEADER BEING MOUNTED ON SAID SUPERSTRUCTURE; A PLURALITY OF BUBBLE TUBES ANGULARLY SPACED APART AND DEPENDING FROM SAID HEADER IN CONNECTED RELATION THERETO AND SPACED FROM SAID CYLINDRICAL WALL; SAID BUBBLE TUBES EXTENDING BELOW THE LEVEL OF SAID IMPELLER AND HAVING RADIAL ORIFICES THEREIN BELOW SAID LEVEL; A PULP WEIR CARRIED BY SAID CYLINDRICAL WALL IN A PREDETERMINED RELATION TO SAID EDGE; A CIRCULAR FROTH LAUNDER OF U-SHAPED CROSS SECTION PRESENTING OPPOSED SPACED SIDE WALLS CONNECTED BY A BOTTOM WALL AND HAVING UPPER WEIR EDGES AT A PREDETERMINED LEVEL BELOW SAID TANK EDGE WITH THE OUTERMOST WEIR EDGE SPACED FROM SAID CYLINDRICAL WALL AND SAID BOTTOM WALL OF SAID LAUNDER BEING INCLINED WITH RESPECT TO SUCH TANK BOTTOM, SAID LAUNDER BEING MOUNTED ON SAID CYLINDRICAL WALL; AND AN OUTLET CONDUIT COMMUNICATING WITH SAID LAUNDER ADJACENT TO THE BOTTOM WALL AT THE LOWEST REGION THEREOF AND EXTENDING THROUGH SAID CYLINDRICAL WALL.
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) | 1970-09-18 | 1971-03-20 | 1971-09-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-09-18 | 1975-03-20 | 1975-09-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-09-18 | 1979-03-20 | 1979-09-19 | $7700.00 | Window Closed / Lapsed |