Patent US3207494A successfully refreshed from Google Patents.
US3207494A
Expired / Lapsed
US
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Apparatus for the preheating of raw cement material
Assignee: Wedag Westfalia Dinnendahl Groeppel AG
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Filing: 1963-12-12
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Granted: 1965-09-21
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Expires: 1983-12-12
Abstract
No abstract record available.
Inventors
- 👤 Jager Heinz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 20:26
CPC Classifications
F; F27; F27B; F27B7/00; F27B7/20; F27B7/2016; F27B7/2025
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
152 words
AN APPARATUS FOR PREHEATING PULVERULENT RAW CEMENT MATERIAL, COMPRISING A PLURALITY OF SEQUENTIALLY ARRANGED CYCLONE SEPARATORS, AN EDDY CHAMBER ON THE TOP OF AT LEAST SAID ONE OF SAID SEPARATORS, MEANS FOR SUPPLYING MATERIAL TO BE PREHEATED THROUGH SAID EDDY CHAMBER TO SAID ONE SEPARATOR, HOT GAS DUCT MEANS FOR DELIVERING HOT GASES TO SAID SEPARATORS AND INCLUDING HOT GAS INLET MEANS IN SAID ONE SEPARATOR, SAID EDDY CHAMBER INCLUDING A LOWER PORTION CONNECTED WITH SAID ONE SEPARATOR, AN IMMERSION PIPE IN SAID ONE CYCLONE SEPARATOR, SAID IMMERSION PIPE BEING CONNECTED TO SAID PORTION AND EXTENDING DOWNWARDLY INTO SAID ONE SEPARATOR TO BELOW THE LEVEL OF SAID INLET MEANS SO AS TO FORM A PATH FOR HOT GASES FROM SAID INLET MEANS DOWN PAST THE OUTSIDE OF SAID IMMERSION PIPE AND UP THROUGH SAID IMMERSION PIPE AND A PATH FOR MATERIAL TO BE PREHEATED IN OPPOSITION TO THE PATH FOR HOT GASES.
Claim 2
Independent Claim
152 words
AN APPARATUS FOR PREHEATING PULVERULENT RAW CEMENT MATERIAL, COMPRISING A PLURALITY OF SEQUENTIALLY ARRANGED CYCLONE SEPARATORS, AN EDDY CHAMBER ON THE TOP OF AT LEAST SAID ONE OF SAID SEPARATORS, MEANS FOR SUPPLYING MATERIAL TO BE PREHEATED THROUGH SAID EDDY CHAMBER TO SAID ONE SEPARATOR, HOT GAS DUCT MEANS FOR DELIVERING HOT GASES TO SAID SEPARATORS AND INCLUDING HOT GAS INLET MEANS IN SAID ONE SEPARATOR, SAID EDDY CHAMBER INCLUDING A LOWER PORTION CONNECTED WITH SAID ONE SEPARATOR, AN IMMERSION PIPE IN SAID ONE CYCLONE SEPARATOR, SAID IMMERSION PIPE BEING CONNECTED TO SAID PORTION AND EXTENDING DOWNWARDLY INTO SAID ONE SEPARATOR TO BELOW THE LEVEL OF SAID INLET MEANS SO AS TO FORM A PATH FOR HOT GASES FROM SAID INLET MEANS DOWN PAST THE OUTSIDE OF SAID IMMERSION PIPE AND UP THROUGH SAID IMMERSION PIPE AND A PATH FOR MATERIAL TO BE PREHEATED IN OPPOSITION TO THE PATH FOR HOT GASES.
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) | 1968-09-20 | 1969-03-22 | 1969-09-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-20 | 1973-03-22 | 1973-09-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-20 | 1977-03-22 | 1977-09-21 | $7700.00 | Window Closed / Lapsed |