US3073516A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Centrifuges
Assignee: Dorr Oliver Inc
•
Filing: 1959-08-06
•
Granted: 1963-01-15
•
Expires: 1979-08-06
Abstract
No abstract record available.
Inventors
- 👤 John G Glasson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 09:14
CPC Classifications
B; B04; B04B; B04B1/00; B04B1/10; B04B1/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
199 words
IN A NOZZLE TYPE CENTRIFUGE WITH UNDERFLOW RETURN, THE COMBINATION WHICH COMPRISES A ROTOR BOWL HAVING TRUNCO-CONICALLY SHAPED END PORTIONS WITH THEIR WIDE ENDS ADJACENT TO EACH OTHER TO CONSTITUTE AN ANNULAR SEPARATING CHAMBER; OVERFLOW MEANS AT THE NARROW END OF THE ONE OF SAID END PORTIONS FOR CENTRIFUGALLY DISCHARGING OVERFLOW; DISCHARGE NOZZLES MOUNTED UPON THE OUTER PERIPHERY OF THE SEPARATING CHAMBER FOR DISCHARGING CENTRIFUGALLY SEPARATED UNDERFLOW MATERIAL THEREFROM; A HUB HAVING A RIM PORTION MARGINALLY CONNECTED TO AND CLOSING THE NARROW END OF THE OTHER OF SAID TRUNCO-CONICAL END PORTIONS, WITH A FIRST SET OF INLEADING FLOW PASSAGES IN THE RIM PORTION FOR INTRODUCING FEED SUSPENSION, AND A SECOND SET OF INLEADING FLOW PASSAGES IN SAID RIM PORTION FOR INTRODUCING CONTROL LIQUID OR SUSPENSION, BOTH SETS OF FLOW PASSAGES DISPOSED AROUND THE ROTOR AXIS; A GROUP OF DIVERGENT CONDUITS CONNECTED TO SAID SECOND SET OF INLEADING PASSAGES AND HAVING THEIR DELIVERY ENDS LOCATED IN SAID SEPARATING CHAMBER IN THE REGION OF THE DISCHARGE NOZZLES FOR DISCHARGING CONTROL LIQUID INTO SAID REGION; A ROTOR SHAFT EXTENDING FROM SAID HUB AXIALLY THROUGH SAID SEPARATING CHAMBER AND THROUGH THE OVERFLOW END OF THE BOWL AND FASTENED TO SAID HUB; AN INTER-
Claim 2
Dependent Claim
199 words
IN A NOZZLE TYPE CENTRIFUGE WITH UNDERFLOW RETURN, THE COMBINATION WHICH COMPRISES A ROTOR BOWL HAVING TRUNCO-CONICALLY SHAPED END PORTIONS WITH THEIR WIDE ENDS ADJACENT TO EACH OTHER TO CONSTITUTE AN ANNULAR SEPARATING CHAMBER; OVERFLOW MEANS AT THE NARROW END OF THE ONE OF SAID END PORTIONS FOR CENTRIFUGALLY DISCHARGING OVERFLOW; DISCHARGE NOZZLES MOUNTED UPON THE OUTER PERIPHERY OF THE SEPARATING CHAMBER FOR DISCHARGING CENTRIFUGALLY SEPARATED UNDERFLOW MATERIAL THEREFROM; A HUB HAVING A RIM PORTION MARGINALLY CONNECTED TO AND CLOSING THE NARROW END OF THE OTHER OF SAID TRUNCO-CONICAL END PORTIONS, WITH A FIRST SET OF INLEADING FLOW PASSAGES IN THE RIM PORTION FOR INTRODUCING FEED SUSPENSION, AND A SECOND SET OF INLEADING FLOW PASSAGES IN SAID RIM PORTION FOR INTRODUCING CONTROL LIQUID OR SUSPENSION, BOTH SETS OF FLOW PASSAGES DISPOSED AROUND THE ROTOR AXIS; A GROUP OF DIVERGENT CONDUITS CONNECTED TO SAID SECOND SET OF INLEADING PASSAGES AND HAVING THEIR DELIVERY ENDS LOCATED IN SAID SEPARATING CHAMBER IN THE REGION OF THE DISCHARGE NOZZLES FOR DISCHARGING CONTROL LIQUID INTO SAID REGION; A ROTOR SHAFT EXTENDING FROM SAID HUB AXIALLY THROUGH SAID SEPARATING CHAMBER AND THROUGH THE OVERFLOW END OF THE BOWL AND FASTENED TO SAID HUB; AN INTER-
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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) | 1966-01-14 | 1966-07-16 | 1967-01-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-01-14 | 1970-07-16 | 1971-01-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-01-14 | 1974-07-16 | 1975-01-15 | $7700.00 | Window Closed / Lapsed |