Patent US2645567A successfully refreshed from Google Patents.
US2645567A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Catalytic reactor tube assembly
Assignee: Shell Development Co
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Filing: 1952-05-24
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Granted: 1953-07-14
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Expires: 1972-05-24
Abstract
No abstract record available.
Inventors
- 👤 Samuel B Thomas
- 👤 Harry D Evans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 19:06
CPC Classifications
B; B01; B01J; B01J8/00; B01J8/02; B01J8/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
103 words
A CENTRIFUGAL SEPARATOR-COLLECTOR ADAPTED FOR INSERTIONIN CATALYTIC REACTION TUBES WHICH COMPRISES IN COMBINATION, TWO CONCENTRIC CYLINDERS PROVIDING AN ANNULAR SPACE BETWEEN THEM, A TOP CLOSURE SEALING THE ENDS OF SAID CYLINDERS A BOTTOM CLOSURE SEALING THE BOTTOM OF SAID ANNULAR SPACE WHILE LEAVING THE BOTTOM OF THE INNER CYLINDER OPEN, AND AN INLET CONDUIT ENTERING SAID ANNULAR SPACE AT THE TOP THEREOF AND EXTENDING SUBSTANTIALLY PARALLEL TO SAID TOP CLOSURE AND TO THE WALLS OF SAID CYLINDERS, THE SAID ANNULAR SPACE BEING IN DIRECT COMMUNICATION WITH THE SPACE WITHIN THE INNER CYLINDER ONLY THROUGH PORTS IN THE LATER LOCATED INTERMEDIATE THE ENDS THEREOF.
Claim 2
Dependent Claim
103 words
A CENTRIFUGAL SEPARATOR-COLLECTOR ADAPTED FOR INSERTIONIN CATALYTIC REACTION TUBES WHICH COMPRISES IN COMBINATION, TWO CONCENTRIC CYLINDERS PROVIDING AN ANNULAR SPACE BETWEEN THEM, A TOP CLOSURE SEALING THE ENDS OF SAID CYLINDERS A BOTTOM CLOSURE SEALING THE BOTTOM OF SAID ANNULAR SPACE WHILE LEAVING THE BOTTOM OF THE INNER CYLINDER OPEN, AND AN INLET CONDUIT ENTERING SAID ANNULAR SPACE AT THE TOP THEREOF AND EXTENDING SUBSTANTIALLY PARALLEL TO SAID TOP CLOSURE AND TO THE WALLS OF SAID CYLINDERS, THE SAID ANNULAR SPACE BEING IN DIRECT COMMUNICATION WITH THE SPACE WITHIN THE INNER CYLINDER ONLY THROUGH PORTS IN THE LATER LOCATED INTERMEDIATE THE ENDS THEREOF.
References Cited (Backward Citations)
US2187741A
Cited
US2432757A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-07-13 | 1957-01-12 | 1957-07-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-07-13 | 1961-01-12 | 1961-07-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-07-13 | 1965-01-12 | 1965-07-14 | $7700.00 | Window Closed / Lapsed |