US2913281A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transport of finely divided solids
Assignee: Shell Development Co
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Filing: 1957-12-16
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Granted: 1959-11-17
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Expires: 1977-12-16
Abstract
No abstract record available.
Inventors
- 👤 Jr Hypolite A Le Blanc
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 05:22
CPC Classifications
B; B65; B65D; B65D88/00; B65D88/54; B65D88/72
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
94 words
IN THE TRANSPORT OF A SOLID IN FINELY DIVIDED CONDITION INA CONDUIT BY GRAVITY FLOW THROUGH A BEND OF, AT LEAST 15* THE IMPROVEMENT WHICH COMPRISES PASSING GAS FROM AN EXTERIOR SOURCE COUNTER-CURRENT TO SAID FINELY DIVIDED SOLID THROUGH A SECOND OPEN ENDED CODUIT WITHIN THE FIRST SAID CONDUIT ON THE UPPR SIDE OF SAID BEND FROM A POINT BELOW SAID BEND TO A POINT ON THE UPPER SIDE OF SAID BEND TO ASPIRATE GAS FROM THE FIRST SAID CONDUIT BELOW SAID BEND AND RETAIN THE OPEN ENDED CONDUIT SUBSTANTIALLY FREE OF DESCENDING SOLIDS.
Claim 2
Dependent Claim
94 words
IN THE TRANSPORT OF A SOLID IN FINELY DIVIDED CONDITION INA CONDUIT BY GRAVITY FLOW THROUGH A BEND OF, AT LEAST 15* THE IMPROVEMENT WHICH COMPRISES PASSING GAS FROM AN EXTERIOR SOURCE COUNTER-CURRENT TO SAID FINELY DIVIDED SOLID THROUGH A SECOND OPEN ENDED CODUIT WITHIN THE FIRST SAID CONDUIT ON THE UPPR SIDE OF SAID BEND FROM A POINT BELOW SAID BEND TO A POINT ON THE UPPER SIDE OF SAID BEND TO ASPIRATE GAS FROM THE FIRST SAID CONDUIT BELOW SAID BEND AND RETAIN THE OPEN ENDED CONDUIT SUBSTANTIALLY FREE OF DESCENDING SOLIDS.
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) | 1962-11-16 | 1963-05-18 | 1963-11-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-11-16 | 1967-05-18 | 1967-11-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-11-16 | 1971-05-18 | 1971-11-17 | $7700.00 | Window Closed / Lapsed |