US3206526A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Utilization of cement kiln dust
Assignee: Individual
•
Filing: 1962-05-15
•
Granted: 1965-09-14
•
Expires: 1982-05-15
Abstract
No abstract record available.
Inventors
- 👤 Rygaard Ole Frank
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 04:40
CPC Classifications
F; F27; F27B; F27B7/00; F27B7/20; F27B7/32; F27B7/3205; F27B2007/2008; F27D; F27D3/00; F27D3/16; F27D2003/168; F27D2003/169; F27D3/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
166 words
IN A METHOD OF TREATING MATERIAL IN A KILN TO FORM CLINKER FROM RAW MATERIAL WHICH INCLUDES THE STEPS OF: INTRODUCING A FLAME GENERALLY LONGITUDINALLY INTO THE HOT END OF AN INCLINED KILN IN SPACED RELATIONSHIP TO THE INNER WALL OF SAID KILN, ADING RAW MATERIAL TO THE OPPOSITE, COOL END OF THE KILN; ROTATING SAID KILN TO MOVE SAID RAW MATERIAL THROUGH SAID KILN AND PAST SAID FLAME WHEREBY SAID RAW MATERIAL IS HEATED TO A DESIRED TEMPERATURE AND DISCHARGED FROM SAID KILN; AND RETURNING DUST FROM SAID COOL END TO SAID HOT END, THE IMPROVEMENT COMPRISING: EJECTING SAID DUST INTO SAID HOT END OF THE KILN AT A LOCATION SPACED FROM SAID FLAME AND IN A DIRECTION GENERALLY PARALLEL TO SAID FLAME AND WITH SUFFICIENT FORCE TO FORM A CLOUD BETWEEN SAID FLAME AND PORTION OF SAID INNER WALL WHICH IS DIRECTLY EXPOSED TO SAID FLAME, SAID CLOUD BEING SUBSTANTIALLY COEXTENSIVE WITH SAID FLAME SO AS TO PROTECT SAID WALL PORTION FROM SAID FLAME.
Claim 2
Dependent Claim
166 words
IN A METHOD OF TREATING MATERIAL IN A KILN TO FORM CLINKER FROM RAW MATERIAL WHICH INCLUDES THE STEPS OF: INTRODUCING A FLAME GENERALLY LONGITUDINALLY INTO THE HOT END OF AN INCLINED KILN IN SPACED RELATIONSHIP TO THE INNER WALL OF SAID KILN, ADING RAW MATERIAL TO THE OPPOSITE, COOL END OF THE KILN; ROTATING SAID KILN TO MOVE SAID RAW MATERIAL THROUGH SAID KILN AND PAST SAID FLAME WHEREBY SAID RAW MATERIAL IS HEATED TO A DESIRED TEMPERATURE AND DISCHARGED FROM SAID KILN; AND RETURNING DUST FROM SAID COOL END TO SAID HOT END, THE IMPROVEMENT COMPRISING: EJECTING SAID DUST INTO SAID HOT END OF THE KILN AT A LOCATION SPACED FROM SAID FLAME AND IN A DIRECTION GENERALLY PARALLEL TO SAID FLAME AND WITH SUFFICIENT FORCE TO FORM A CLOUD BETWEEN SAID FLAME AND PORTION OF SAID INNER WALL WHICH IS DIRECTLY EXPOSED TO SAID FLAME, SAID CLOUD BEING SUBSTANTIALLY COEXTENSIVE WITH SAID FLAME SO AS TO PROTECT SAID WALL PORTION FROM SAID FLAME.
References Cited (Backward Citations)
US2116030A
Cited
US2965366A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-09-13 | 1969-03-15 | 1969-09-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-13 | 1973-03-15 | 1973-09-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-13 | 1977-03-15 | 1977-09-14 | $7700.00 | Window Closed / Lapsed |