Patent US2816803A successfully refreshed from Google Patents.
US2816803A
Expired / Lapsed
US
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Conveyance of granular solids
Assignee: Union Oil Company of California
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Filing: 1954-11-15
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Granted: 1957-12-17
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Expires: 1974-11-15
Abstract
No abstract record available.
Inventors
- 👤 Clark Robert Duff
- 👤 Jr John E Hines
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 20:08
CPC Classifications
B; B01; B01J; B01J8/00; B01J8/0015; B01J2208/00; B01J2208/00743; B01J2208/00761
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
98 words
AN APPARATUS FOR THE CONVEYANCE OF GRANULAR SOLIDS WHICH COMPRISES AN ELONGATED CONVEYANCE CONDUIT COMMUNICATING AT ITS INLET WITH AN ELONGATED CURVING INLET CONDUIT, A SUBSTANTIALLY COAXIAL PRESSURE SHELL SURROUNDING SAID INLET CONDUIT, MEANS FOR FLOWING GRANULAR SOLIDS BY GRAVITY DIRECTLY INTO THE OPENING OF SAID INLET CONDUIT AND INDEPENDENTLY OF SAID PRESSURE SHELL, MEANS FOR INTRODUCING A CONVEYANCE FLUID INTO SAID INLET CONDUIT, MEANS FOR DEPRESSURING SAID CONVEYANCE FLUID CONCURRENTLY WITH SAID GRANULAR SOLIDS THROUGH SAID INLET AND CONVEYANCE CONDUITS SUCCESSIVELY, MEANS FOR APPLYING A THRUST FORCE TO SOLIDS DISCHARGING FROM THE OUTLET OPENING OF SAID CON-
Claim 2
Independent Claim
98 words
AN APPARATUS FOR THE CONVEYANCE OF GRANULAR SOLIDS WHICH COMPRISES AN ELONGATED CONVEYANCE CONDUIT COMMUNICATING AT ITS INLET WITH AN ELONGATED CURVING INLET CONDUIT, A SUBSTANTIALLY COAXIAL PRESSURE SHELL SURROUNDING SAID INLET CONDUIT, MEANS FOR FLOWING GRANULAR SOLIDS BY GRAVITY DIRECTLY INTO THE OPENING OF SAID INLET CONDUIT AND INDEPENDENTLY OF SAID PRESSURE SHELL, MEANS FOR INTRODUCING A CONVEYANCE FLUID INTO SAID INLET CONDUIT, MEANS FOR DEPRESSURING SAID CONVEYANCE FLUID CONCURRENTLY WITH SAID GRANULAR SOLIDS THROUGH SAID INLET AND CONVEYANCE CONDUITS SUCCESSIVELY, MEANS FOR APPLYING A THRUST FORCE TO SOLIDS DISCHARGING FROM THE OUTLET OPENING OF SAID CON-
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) | 1960-12-16 | 1961-06-17 | 1961-12-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-12-16 | 1965-06-17 | 1965-12-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-12-16 | 1969-06-17 | 1969-12-17 | $7700.00 | Window Closed / Lapsed |