US2498355A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and means for the production of porous clinkers
Assignee: Individual
•
Filing: 1948-02-20
•
Granted: 1950-02-21
•
Expires: 1968-02-20
Abstract
No abstract record available.
Inventors
- 👤 Bomgren Axel Fritiof
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 17:48
CPC Classifications
C; C04; C04B; C04B20/00; C04B20/02; C04B20/04; C04B20/06; F; F27; F27B; F27B9/00; F27B9/30; F27B9/38
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
114 words
THE METHOD OF PRODUCING POROUS CLINKERS FROM DRIED AND GRANULATED MATERIAL OF THE CLAY AND SHALE TYPE AND CAPABLE OF DEVELOPING GAS WHEN HEATED WHICH COMPRISES THE STEPS OF STORING THE MATERIAL IN A COMPARATIVELY THICK VERTICAL COLUMN, SLOWLY HEATING IN A FIRST HEATING STAGE THE MATERIAL SO STORED TO A TEMPERATURE OF ABOUT 800*C. TO CAUSE ANY WATER CONTAINED IN THE MATERIAL TO ESCAPE, SPREADING THE MATERIAL IN A LAYER IN WHICH THE INDIVIDUAL GRANULES LIE SUBSTANTIALLY FREE FROM ONE ANOTHER, AND RAPIDLY HEATING THE MATERIAL IN A SECOND STAGE TO A TEMPERATURE WITHIN A RANGE BETWEEN 1200* AND 1300* C. WHILE MAINTAINING THE GRANULES IN SAID LAYER IN A MUTUALLY UNMOVED POSITION.
Claim 2
Independent Claim
114 words
THE METHOD OF PRODUCING POROUS CLINKERS FROM DRIED AND GRANULATED MATERIAL OF THE CLAY AND SHALE TYPE AND CAPABLE OF DEVELOPING GAS WHEN HEATED WHICH COMPRISES THE STEPS OF STORING THE MATERIAL IN A COMPARATIVELY THICK VERTICAL COLUMN, SLOWLY HEATING IN A FIRST HEATING STAGE THE MATERIAL SO STORED TO A TEMPERATURE OF ABOUT 800*C. TO CAUSE ANY WATER CONTAINED IN THE MATERIAL TO ESCAPE, SPREADING THE MATERIAL IN A LAYER IN WHICH THE INDIVIDUAL GRANULES LIE SUBSTANTIALLY FREE FROM ONE ANOTHER, AND RAPIDLY HEATING THE MATERIAL IN A SECOND STAGE TO A TEMPERATURE WITHIN A RANGE BETWEEN 1200* AND 1300* C. WHILE MAINTAINING THE GRANULES IN SAID LAYER IN A MUTUALLY UNMOVED POSITION.
Claim 3
Dependent Claim
167 words
APPARATUS FOR PRODUCING POROUS CLINKERS FROM DRIED AND GRANULATED MATERIAL OF THE CLAY AND SHALE TYPE AND CAPABLE OF DEVELOPING GAS WHEN HEATED IN WHICH CLINKERS THE VOLUME OF THE GRANULAR MATERIAL IS AUGMENTED AND WHICH HAVE A GLAZE LAYER ON THE SURFACE, SAID APPARATUS COMPRISING A VERTICAL KLIN PROVIDING A STRAIGHT PATH FOR A DESCENDING MASS OF THE DRIED AND GRANULATED MATERIAL AND A RISING FLOW OF HOT GASES, A SINGLE ANNULAR TUNNEL FURNACE CONNECTED TO THE SAID KILN AND HAVING A ROTATING PLANE BOTTOM SLAB, MEANS FOR HEATING THE TUNNEL FURNACE TO A TEMPERATURE EXCEEDING THAT OF THE KIN MEANS FOR THE CONTROL OF THE PASSAGE OF THE MATERIAL PREHEATED IN THE KILN FROM THE KILN TO THE ROTATING BOTTOM SLAB IN SUCH A MANNER THAT THE GRANULES ON THE BOTTOM SLAB FORM A LAYER WHEREIN THE GRANULES SUBSTANTIALLY LIE FREE FROM ONE ANOTHER, AND MEANS FOR DISCHARGING THE MATERIAL FROM THE BOTTOM SLAB AFTER THE SAME HAS ONCE PASSED THROUGH THE ANNULAR TUNNEL FURNACE.
Claim 4
Dependent Claim
167 words
APPARATUS FOR PRODUCING POROUS CLINKERS FROM DRIED AND GRANULATED MATERIAL OF THE CLAY AND SHALE TYPE AND CAPABLE OF DEVELOPING GAS WHEN HEATED IN WHICH CLINKERS THE VOLUME OF THE GRANULAR MATERIAL IS AUGMENTED AND WHICH HAVE A GLAZE LAYER ON THE SURFACE, SAID APPARATUS COMPRISING A VERTICAL KLIN PROVIDING A STRAIGHT PATH FOR A DESCENDING MASS OF THE DRIED AND GRANULATED MATERIAL AND A RISING FLOW OF HOT GASES, A SINGLE ANNULAR TUNNEL FURNACE CONNECTED TO THE SAID KILN AND HAVING A ROTATING PLANE BOTTOM SLAB, MEANS FOR HEATING THE TUNNEL FURNACE TO A TEMPERATURE EXCEEDING THAT OF THE KIN MEANS FOR THE CONTROL OF THE PASSAGE OF THE MATERIAL PREHEATED IN THE KILN FROM THE KILN TO THE ROTATING BOTTOM SLAB IN SUCH A MANNER THAT THE GRANULES ON THE BOTTOM SLAB FORM A LAYER WHEREIN THE GRANULES SUBSTANTIALLY LIE FREE FROM ONE ANOTHER, AND MEANS FOR DISCHARGING THE MATERIAL FROM THE BOTTOM SLAB AFTER THE SAME HAS ONCE PASSED THROUGH THE ANNULAR TUNNEL FURNACE.
References Cited (Backward Citations)
US80279A
Cited
US319180A
Cited
US876567A
Cited
US888502A
Cited
US996548A
Cited
US2021956A
Cited
US2266005A
Cited
US2430601A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-02-20 | 1953-08-22 | 1954-02-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-02-20 | 1957-08-22 | 1958-02-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-02-20 | 1961-08-22 | 1962-02-21 | $7700.00 | Window Closed / Lapsed |