Patent US2753221A successfully refreshed from Google Patents.
US2753221A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Elevation of granular solids
Assignee: Sunoco Inc
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Filing: 1951-04-28
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Granted: 1956-07-03
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Expires: 1971-04-28
Abstract
No abstract record available.
Inventors
- 👤 Clarence H Thayer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 09:52
CPC Classifications
B; B01; B01J; B01J8/00; B01J8/005
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
157 words
APPARATUS FOR ELEVATING GRANULAR SOLIDS BY MEANS OF A LIFTING GAS AND FOR SEPARATING SOLIDS FROM GAS AFTER SUCH ELEVATION WHICH COMPRISES: AN ELONGATED LIFT CONDUIT; A DISENGAGING VESSEL COMMUNICATING WITH THE TOP OF SAID LIFT CONDUIT AND PROVIDING A SPACE THEREABOVE FOR DECELERATION AND REVERSAL OF DIRECTION OF GRANULAR SOLIDS AND PROVIDING A COMMUNICATING SPACE THEREBENEATH FOR RECEIVING GRANULAR SOLIDS; A BRAKING GAS NOZZLE HAVING A LOWER SUBSTANTIALLY VERTICALLY DOWNWARDLY DIRECTED OUTLET SUBSTANTIALLY COXIAL WITH SAID LIFT CONDUIT AND HAVING AN UPPER ANNULAR DOWNWARDLY DIRECTED OUTLET SUBSTANTIALLY ABOVE SAID TOP OF SAID LIFT CONDUIT AND INCLINED DOWNWARDLY AWAY FROM THE LONGITUDINAL AXIS OF SAID LIFT CONDUIT; A SOLIDS SUPPLY SOURCE COMMUNICATING WITH A LOWER PORTION OF SAID LIFT CONDUIT; MEANS FOR INTRODUCING BRAKING GAS INTO SAID NOZZLE; AND MEANS FOR INTRODUCING LIFTING GAS AND SOLIDS FROM SAID SUPPLY SOURCE INTO SAID LIFT CONDUIT FOR PASSAGE UPWARDLY THERETHROUGH AS A STREAM OF SOLIDS SUSPENDED IN LIFTING GAS.
Claim 2
Dependent Claim
157 words
APPARATUS FOR ELEVATING GRANULAR SOLIDS BY MEANS OF A LIFTING GAS AND FOR SEPARATING SOLIDS FROM GAS AFTER SUCH ELEVATION WHICH COMPRISES: AN ELONGATED LIFT CONDUIT; A DISENGAGING VESSEL COMMUNICATING WITH THE TOP OF SAID LIFT CONDUIT AND PROVIDING A SPACE THEREABOVE FOR DECELERATION AND REVERSAL OF DIRECTION OF GRANULAR SOLIDS AND PROVIDING A COMMUNICATING SPACE THEREBENEATH FOR RECEIVING GRANULAR SOLIDS; A BRAKING GAS NOZZLE HAVING A LOWER SUBSTANTIALLY VERTICALLY DOWNWARDLY DIRECTED OUTLET SUBSTANTIALLY COXIAL WITH SAID LIFT CONDUIT AND HAVING AN UPPER ANNULAR DOWNWARDLY DIRECTED OUTLET SUBSTANTIALLY ABOVE SAID TOP OF SAID LIFT CONDUIT AND INCLINED DOWNWARDLY AWAY FROM THE LONGITUDINAL AXIS OF SAID LIFT CONDUIT; A SOLIDS SUPPLY SOURCE COMMUNICATING WITH A LOWER PORTION OF SAID LIFT CONDUIT; MEANS FOR INTRODUCING BRAKING GAS INTO SAID NOZZLE; AND MEANS FOR INTRODUCING LIFTING GAS AND SOLIDS FROM SAID SUPPLY SOURCE INTO SAID LIFT CONDUIT FOR PASSAGE UPWARDLY THERETHROUGH AS A STREAM OF SOLIDS SUSPENDED IN LIFTING GAS.
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) | 1959-07-03 | 1960-01-02 | 1960-07-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-07-03 | 1964-01-02 | 1964-07-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-07-03 | 1968-01-02 | 1968-07-03 | $7700.00 | Window Closed / Lapsed |