Patent US2865820A successfully refreshed from Google Patents.
US2865820A
Expired / Lapsed
US
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Method for heat treatment of finely divided solid media
Assignee: Beazer East Inc
•
Filing: 1951-04-18
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Granted: 1958-12-23
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Expires: 1971-04-18
Abstract
No abstract record available.
Inventors
- 👤 Totzek Friedrich
- 👤 Daniels Joseph
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:52
CPC Classifications
C; C10; C10B; C10B51/00; C10B49/00; C10B49/02; C10B49/04; C10B49/08; F; F28; F28C; F28C3/00; F28C3/10; F28C3/12; F28C3/16; Y; Y10; Y10S; Y10S48/00; Y10S48/02; Y10S48/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
77 words
APPARATUS FOR THE HEAT TREATMENT OF FINELY-DIVIDED SOLID MATERIAL COMPRISING A METALLIC SHELL HAVING A HEATRESISTANT INNER LINING, AN ELONGATED SUBSTANTIALLY CYLINDRICAL REACTION CHAMBER LOCATED WITHIN SAID LINING, A NOZZLE DISPOSED TANGENTIALLY TO SAID REACTION CHAMBER SAID NOZZLE BEING LOCATED ADJACENT ONE END THEREOF AND SO POSITIONED THAT MATERIAL PASSING THERETHROUGH WILL FOLLOW A HELICAL PATH THROUGH SAID REACTION CHAMBER, MEANS FOR FEEDING FINELY-DIVIDED SOLID MATERIAL TO SAID NOZZLE, A HEATING CHAMBER LOCATED WITHIN SAID LINING INTERMEDIATE
Claim 2
Dependent Claim
77 words
APPARATUS FOR THE HEAT TREATMENT OF FINELY-DIVIDED SOLID MATERIAL COMPRISING A METALLIC SHELL HAVING A HEATRESISTANT INNER LINING, AN ELONGATED SUBSTANTIALLY CYLINDRICAL REACTION CHAMBER LOCATED WITHIN SAID LINING, A NOZZLE DISPOSED TANGENTIALLY TO SAID REACTION CHAMBER SAID NOZZLE BEING LOCATED ADJACENT ONE END THEREOF AND SO POSITIONED THAT MATERIAL PASSING THERETHROUGH WILL FOLLOW A HELICAL PATH THROUGH SAID REACTION CHAMBER, MEANS FOR FEEDING FINELY-DIVIDED SOLID MATERIAL TO SAID NOZZLE, A HEATING CHAMBER LOCATED WITHIN SAID LINING INTERMEDIATE
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-12-22 | 1962-06-23 | 1962-12-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-12-22 | 1966-06-23 | 1966-12-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-12-22 | 1970-06-23 | 1970-12-23 | $7700.00 | Window Closed / Lapsed |