US2939771A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Contact apparatus including sealing means
Assignee: Vulcan Cincinnati Inc
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Filing: 1958-07-29
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Granted: 1960-06-07
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Expires: 1978-07-29
Abstract
No abstract record available.
Inventors
- 👤 Thomas H Mcdonald
- 👤 Raymond E Dennis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 14:34
CPC Classifications
B; B01; B01D; B01D3/00; B01D3/14; B01D3/32; B01D3/324; B01D3/326
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
167 words
IN A CONTACT APPARATUS WHEREIN ONE MATERIAL PHASE IS CONTACTED WITH A DIFFERENT MATERIAL PHASE WHEREBY MASS TRANSFER BETWEEN THE PHASES TAKES PLACE, THE APPARATUS COMPRISING A VERTICALLY POSITIONED CYLINDRICAL VESSEL PROVIDED WITH A PLURALITY OF HORIZONTAL PLATES OF EXTERNAL DIAMETER SLIGHTLY SMALLER THAN THE INTERNAL DIAMETER OF THE VESSEL, THE IMPROVEMENT FOR SEALING THE SPACE BETWEEN A PLATE AND THE VESSEL WHICH COMPRISES A FLEXIBLE METALLIC STRIP FOLDED IN ITS LONG DIRECTION OVER A ROD WHEREBY AN ELONGATED WEDGE IS FORMED, THE WEDGE BEING POSITIONED WITH ITS THIN EDGE POINTING DOWNWARDLY AND WITH ONE OF ITS FACES IN CONTACT WITH THE INTERIOR OF THE VESSEL AND WITH THE OTHER OF ITS FACES IN CONTACT WITH THE OUTER RIM OF THE PLATE WHEREBY PASSAGE OF MATERIAL BETWEEN THE INNER WALL OF THE VESSEL AND THE OUTER EDGE OF THE PLATE IS BLOCKED, AND MEANS URGING THE WEDGE DOWNWARDLY INTO THE SPACE BETWEEN THE VESSEL AND THE OUTER RIM OF THE PLATE WHEREBY THE WEDGE IS MAINTAINED POSITION.
Claim 2
Dependent Claim
167 words
IN A CONTACT APPARATUS WHEREIN ONE MATERIAL PHASE IS CONTACTED WITH A DIFFERENT MATERIAL PHASE WHEREBY MASS TRANSFER BETWEEN THE PHASES TAKES PLACE, THE APPARATUS COMPRISING A VERTICALLY POSITIONED CYLINDRICAL VESSEL PROVIDED WITH A PLURALITY OF HORIZONTAL PLATES OF EXTERNAL DIAMETER SLIGHTLY SMALLER THAN THE INTERNAL DIAMETER OF THE VESSEL, THE IMPROVEMENT FOR SEALING THE SPACE BETWEEN A PLATE AND THE VESSEL WHICH COMPRISES A FLEXIBLE METALLIC STRIP FOLDED IN ITS LONG DIRECTION OVER A ROD WHEREBY AN ELONGATED WEDGE IS FORMED, THE WEDGE BEING POSITIONED WITH ITS THIN EDGE POINTING DOWNWARDLY AND WITH ONE OF ITS FACES IN CONTACT WITH THE INTERIOR OF THE VESSEL AND WITH THE OTHER OF ITS FACES IN CONTACT WITH THE OUTER RIM OF THE PLATE WHEREBY PASSAGE OF MATERIAL BETWEEN THE INNER WALL OF THE VESSEL AND THE OUTER EDGE OF THE PLATE IS BLOCKED, AND MEANS URGING THE WEDGE DOWNWARDLY INTO THE SPACE BETWEEN THE VESSEL AND THE OUTER RIM OF THE PLATE WHEREBY THE WEDGE IS MAINTAINED POSITION.
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) | 1963-06-07 | 1963-12-07 | 1964-06-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-06-07 | 1967-12-07 | 1968-06-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-06-07 | 1971-12-07 | 1972-06-07 | $7700.00 | Window Closed / Lapsed |