US2825633A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for producing carbon black
Assignee: Godfrey L Cabot Inc
•
Filing: 1954-08-06
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Granted: 1958-03-04
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Expires: 1974-08-06
Abstract
No abstract record available.
Inventors
- 👤 Steele Newman Dudley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 22:33
CPC Classifications
F; F23; F23C; F23C99/00; C; C09; C09C; C09C1/00; C09C1/44; C09C1/48; C09C1/50; F23D; F23D14/00; F23C2700/00; F23C2700/02; F23C2700/023
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
81 words
IN A FURNACE FOR PRODUCING CARBON BLACK, A BURNER HAVING A DISCHARGE NOZZLE AT ITS INNER END, AN OIL PIPE LEADING THERETO, AND SPACED CONCENTRIC GAS PIPES SURROUNDING THE OIL PIPE AND PROVIDING PARALLEL ANNULAR FUEL GAS PASSAGES, THE OUTER GAS PIPE HAVING DISCHARGE ORIFICES LOCATED A SUBSTANTIAL DISTANCE UPSTREAM FROM THE DISCHARGE NOZZLE OF THE BURNER, AND A CAP AT SAID DISCHARGE NOZZLE PROVIDING AN OPENING CONNECTING THE ANNULAR FUEL GAS PASSAGES FOR REVERSING FLOW OF GAS IN THE BURNER.
Claim 2
Dependent Claim
81 words
IN A FURNACE FOR PRODUCING CARBON BLACK, A BURNER HAVING A DISCHARGE NOZZLE AT ITS INNER END, AN OIL PIPE LEADING THERETO, AND SPACED CONCENTRIC GAS PIPES SURROUNDING THE OIL PIPE AND PROVIDING PARALLEL ANNULAR FUEL GAS PASSAGES, THE OUTER GAS PIPE HAVING DISCHARGE ORIFICES LOCATED A SUBSTANTIAL DISTANCE UPSTREAM FROM THE DISCHARGE NOZZLE OF THE BURNER, AND A CAP AT SAID DISCHARGE NOZZLE PROVIDING AN OPENING CONNECTING THE ANNULAR FUEL GAS PASSAGES FOR REVERSING FLOW OF GAS IN THE BURNER.
References Cited (Backward Citations)
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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) | 1961-03-03 | 1961-09-02 | 1962-03-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-03-03 | 1965-09-02 | 1966-03-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-03-03 | 1969-09-02 | 1970-03-04 | $7700.00 | Window Closed / Lapsed |