US2865820A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for heat treatment of finely divided solid media
Assignee: Beazer East Inc
•
Filing: 1951-04-18
•
Granted: 1958-12-23
•
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
2026-10-26 10:42
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
References Cited (Backward Citations)
US1026724A
Cited
US1432170A
Cited
US885766A
Cited
US901232A
Cited
US1213887A
Cited
US1256703A
Cited
US1478526A
Cited
US1618808A
Cited
US1913391A
Cited
US1781614A
Cited
GB288491A
Cited
US1944872A
Cited
US1893913A
Cited
US2020431A
Cited
US2032827A
Cited
US2319836A
Cited
US2350204A
Cited
US2344007A
Cited
US2257907A
Cited
US2351091A
Cited
US2316207A
Cited
US2464812A
Cited
US2367694A
Cited
US2441613A
Cited
US2519481A
Cited
US2548875A
Cited
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 |