Patent US2785115A successfully refreshed from Google Patents.
US2785115A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary kiln with integral cooler
Assignee: FLSmidth and Co AS
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Filing: 1955-04-04
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Granted: 1957-03-12
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Expires: 1975-04-04
Abstract
No abstract record available.
Inventors
- 👤 Borch Niels Sofus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 21:13
CPC Classifications
C; C10; C10B; C10B1/00; C10B1/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
140 words
A ROTARY KLIN FOR HEAT TREATMENT OF MATERIAL IN A SUBSTANTIALLY NON-OXIDIZING ATMOSPHERE FOLLOWING BY COOLING OF THE TREATED MATERIAL OUT OF CONTACT WITH THE OUTSIDE AIR, WHICH COMPRISES A TUBULAR SHELL HAVING A PLURALITY OF ENCIRCLING TIRES, MEANS ENGAGING THE TIRES AND SUPPORTING THE KILN FOR ROTATION AT A LOW ANGLE TO THE HORIZONTAL, MEANS FOR ROTATION AT A LOW ANGLE TO THE HORITO AND CLOSING THE LOWER END OF THE SHELL AND HAVING A TUBULAR SECTION OF LESS DIAMETER THAN THE SHELL EXTENDING UPWARDLY INTO THE SHELL CONCENTRICALLY THEREWITH, THE SHELL HAVING A PLURALITY OF ANGULARLY SPACED DISCHARGE OPENINGS ADJACENT THE CLOSURE PLATE, AND A CASING MOUNTED ON THE SHELL TO ENCLOSE THE ZONE OF THE SHELL WITH THE DISCHARGE OPENINGS AND HAVING MEANS FOR DISCHARGING MATERIAL ENTERING THE CASING THROUGH THE OPENINGS, AS THE SHELL IS ROTATED.
Claim 2
Dependent Claim
140 words
A ROTARY KLIN FOR HEAT TREATMENT OF MATERIAL IN A SUBSTANTIALLY NON-OXIDIZING ATMOSPHERE FOLLOWING BY COOLING OF THE TREATED MATERIAL OUT OF CONTACT WITH THE OUTSIDE AIR, WHICH COMPRISES A TUBULAR SHELL HAVING A PLURALITY OF ENCIRCLING TIRES, MEANS ENGAGING THE TIRES AND SUPPORTING THE KILN FOR ROTATION AT A LOW ANGLE TO THE HORIZONTAL, MEANS FOR ROTATION AT A LOW ANGLE TO THE HORITO AND CLOSING THE LOWER END OF THE SHELL AND HAVING A TUBULAR SECTION OF LESS DIAMETER THAN THE SHELL EXTENDING UPWARDLY INTO THE SHELL CONCENTRICALLY THEREWITH, THE SHELL HAVING A PLURALITY OF ANGULARLY SPACED DISCHARGE OPENINGS ADJACENT THE CLOSURE PLATE, AND A CASING MOUNTED ON THE SHELL TO ENCLOSE THE ZONE OF THE SHELL WITH THE DISCHARGE OPENINGS AND HAVING MEANS FOR DISCHARGING MATERIAL ENTERING THE CASING THROUGH THE OPENINGS, AS THE SHELL IS ROTATED.
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) | 1960-03-11 | 1960-09-10 | 1961-03-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-03-11 | 1964-09-10 | 1965-03-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-03-11 | 1968-09-10 | 1969-03-12 | $7700.00 | Window Closed / Lapsed |