Patent US3158448A successfully refreshed from Google Patents.
US3158448A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drier with gas-moved bed of material
Assignee: Svenska Flaktfabriken AB
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Filing: 1960-09-01
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Granted: 1964-11-24
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Expires: 1980-09-01
Abstract
No abstract record available.
Inventors
- 👤 Wallin Sven Warner
- 👤 Oholm Gustav
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 19:47
CPC Classifications
F; F26; F26B; F26B17/00; F26B17/001; F26B3/00; F26B3/02; F26B3/06; F26B3/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
225 words
APPARATUS FOR TREATING AND MOVING A BED OF LOOSE FLUENT MATERIAL BY A GASEOUS MEDIUM UNDER PRESSURE, COMPRISING IN COMBINATION: A HOUSING HAVING EXTENDED VERTICAL SIDE WALLS AND END WALLS DEFINING AN ENCLOSURE FOR A PLURALITY OF SEPARATE TREATMENT UNITS; EACH TREATMENT UNIT COMPRISING AN IMPERFORATED HORIZONTAL TOP WALL EXTENDING FROM A CONNECTED END AT ONE HOUSING END WALL TO AN END AT A POINT SPACED A SHORT DISTANCE FROM ANOTHER AND OPPOSITE HOUSING END WALL, AN IMPERFORATED HORIZONTAL BOTTOM WALL EXTENDING FROM A CONNECTED END AT SAID OTHER HOUSING END WALL TO A POINT SPACED FROM SAID ONE HOUSING END WALL, AND A PERFORATE INTERMEDIATE SLIGHTLY INCLINED MATERIAL SUPPORTING FLOOR WALL EXTENDING FROM A CONNECTED END AT SAID OTHER HOUSING END WALL TO A POINT SPACED FROM SAID ONE HOUSING END WALL; THE CONNECTED END OF SAID FLOOR WALL BEING SPACED VERTICALLY BELOW THE SPACED END OF SAID TOP WALL, AND THE SPACED END OF SAID FLOOR WALL BEING SPACED VERTICALLY ABOVE THE SPACED END OF SAID BOTTOM WALL; A VERTICAL SHAFTWAY WALL CONNECTING THE SPACED END OF SAID FLOOR WALL WITH THE SPACED END OF SAID BOTTOM WALL AND DEFINING WITH THE ADJACENT HOUSING END WALL AND SIDE WALLS A VERTICAL SHAFTWAY DOWN WHICH ADVANCING MATERIAL FALLS; SAID FLOOR WALL AND SAID BOTTOM WALL DEFINING, WITH THE HOUSING SIDE WALLS, A FLUID DUCT
Claim 2
Dependent Claim
225 words
APPARATUS FOR TREATING AND MOVING A BED OF LOOSE FLUENT MATERIAL BY A GASEOUS MEDIUM UNDER PRESSURE, COMPRISING IN COMBINATION: A HOUSING HAVING EXTENDED VERTICAL SIDE WALLS AND END WALLS DEFINING AN ENCLOSURE FOR A PLURALITY OF SEPARATE TREATMENT UNITS; EACH TREATMENT UNIT COMPRISING AN IMPERFORATED HORIZONTAL TOP WALL EXTENDING FROM A CONNECTED END AT ONE HOUSING END WALL TO AN END AT A POINT SPACED A SHORT DISTANCE FROM ANOTHER AND OPPOSITE HOUSING END WALL, AN IMPERFORATED HORIZONTAL BOTTOM WALL EXTENDING FROM A CONNECTED END AT SAID OTHER HOUSING END WALL TO A POINT SPACED FROM SAID ONE HOUSING END WALL, AND A PERFORATE INTERMEDIATE SLIGHTLY INCLINED MATERIAL SUPPORTING FLOOR WALL EXTENDING FROM A CONNECTED END AT SAID OTHER HOUSING END WALL TO A POINT SPACED FROM SAID ONE HOUSING END WALL; THE CONNECTED END OF SAID FLOOR WALL BEING SPACED VERTICALLY BELOW THE SPACED END OF SAID TOP WALL, AND THE SPACED END OF SAID FLOOR WALL BEING SPACED VERTICALLY ABOVE THE SPACED END OF SAID BOTTOM WALL; A VERTICAL SHAFTWAY WALL CONNECTING THE SPACED END OF SAID FLOOR WALL WITH THE SPACED END OF SAID BOTTOM WALL AND DEFINING WITH THE ADJACENT HOUSING END WALL AND SIDE WALLS A VERTICAL SHAFTWAY DOWN WHICH ADVANCING MATERIAL FALLS; SAID FLOOR WALL AND SAID BOTTOM WALL DEFINING, WITH THE HOUSING SIDE WALLS, A FLUID DUCT
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) | 1967-11-24 | 1968-05-25 | 1968-11-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-11-24 | 1972-05-25 | 1972-11-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-11-24 | 1976-05-25 | 1976-11-24 | $7700.00 | Window Closed / Lapsed |