US3350280A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Retort for oil-bearing shales
Assignee: Standard Oil Co
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Filing: 1963-10-31
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Granted: 1967-10-31
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Expires: 1983-10-31
Abstract
No abstract record available.
Inventors
- 👤 Howard F West
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 05:35
CPC Classifications
F; F28; F28C; F28C3/00; F28C3/10; F28C3/12; F28C3/18; C; C10; C10B; C10B49/00; C10B49/16; C10B7/00; C10B7/10; F26; F26B; F26B17/00; F26B17/18; F26B3/00; F26B3/18; F26B3/20; F26B3/205
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
187 words
A DEVICE FOR THE TREATMENT OF OIL-BEARING SHALES BY MEANS OF THE GRINDING ACTION OF ATTRITION RESISTANT SOLID BODIES WHICH ARE BROUGHT INTO DIRECT CONTACT WITH THE SHALE DURING ITS OPERATION; SAID DEVICE COMPRISING A STATIONARY DRUM CONTAINING NEAR ITS TOP AN INLET FOR THE INTRODUCTION OF SAID SHALE, AN OUTLET FOR THE REMOVAL OF GASEOUS PRODUCTS AND AN INLET NEAR THE BOTTOM FOR THE INTRODUCTION OF SAID ATTRITION REISTANT SOLID BODIES; SAID DRUM CONTAINING A CENTRALLY LOCATED ROTATABLE SHAFT EQUIPPED WITH A SCREW, SAID SHAFT BEING SECURED BY SUITABLE BEARING AND SEAL MEANS AT THE TOP AND BOTTOM OF SAID DRUM; DRIVING MEANS FOR ROTATING SAID SHAFT; SAID SCREW BEING EQUIPPED WITH OPENINGS LARGE ENOUGH TO ALLOW THE SHALE TO PASS THROUGH AND SMALL ENOUGH TO RETAIN THE SOLID BODIES AND SAID SCREW ALSO BEING EQUIPPED WITH CROSS BAFFLES ADAPTED TO CARRY THE SOLID BODIES IN AN UPWARD DIRECTION IN THE DRUM AS THE SCREW ROTATES; SAID DRUM HAVING AN OUTLET AT THE TOP FOR CONTINUOUS REMOVAL OF SAID ATTRITION RESISTANT SOLID BODIES AND AN OUTLET AT THE BOTTOME FOR CONTINUOUS REMOVAL OF THE TREATED SHALE.
Claim 2
Independent Claim
187 words
A DEVICE FOR THE TREATMENT OF OIL-BEARING SHALES BY MEANS OF THE GRINDING ACTION OF ATTRITION RESISTANT SOLID BODIES WHICH ARE BROUGHT INTO DIRECT CONTACT WITH THE SHALE DURING ITS OPERATION; SAID DEVICE COMPRISING A STATIONARY DRUM CONTAINING NEAR ITS TOP AN INLET FOR THE INTRODUCTION OF SAID SHALE, AN OUTLET FOR THE REMOVAL OF GASEOUS PRODUCTS AND AN INLET NEAR THE BOTTOM FOR THE INTRODUCTION OF SAID ATTRITION REISTANT SOLID BODIES; SAID DRUM CONTAINING A CENTRALLY LOCATED ROTATABLE SHAFT EQUIPPED WITH A SCREW, SAID SHAFT BEING SECURED BY SUITABLE BEARING AND SEAL MEANS AT THE TOP AND BOTTOM OF SAID DRUM; DRIVING MEANS FOR ROTATING SAID SHAFT; SAID SCREW BEING EQUIPPED WITH OPENINGS LARGE ENOUGH TO ALLOW THE SHALE TO PASS THROUGH AND SMALL ENOUGH TO RETAIN THE SOLID BODIES AND SAID SCREW ALSO BEING EQUIPPED WITH CROSS BAFFLES ADAPTED TO CARRY THE SOLID BODIES IN AN UPWARD DIRECTION IN THE DRUM AS THE SCREW ROTATES; SAID DRUM HAVING AN OUTLET AT THE TOP FOR CONTINUOUS REMOVAL OF SAID ATTRITION RESISTANT SOLID BODIES AND AN OUTLET AT THE BOTTOME FOR CONTINUOUS REMOVAL OF THE TREATED SHALE.
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) | 1970-10-30 | 1971-05-01 | 1971-10-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-10-30 | 1975-05-01 | 1975-10-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-10-30 | 1979-05-01 | 1979-10-31 | $7700.00 | Window Closed / Lapsed |