US2844445A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process and apparatus for pelleting carbon black
Assignee: Phillips Petroleum Co
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Filing: 1954-11-12
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Granted: 1958-07-22
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Expires: 1974-11-12
Abstract
No abstract record available.
Inventors
- 👤 George J Webster
- 👤 Wilson H Rushford
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 16:28
CPC Classifications
B; B01; B01J; B01J2/00; B01J2/12; C; C09; C09C; C09C1/00; C09C1/44; C09C1/48; C09C1/56; C09C1/58
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
133 words
APPARATUS COMPRISING A ROTATABLE PELLET MILL HAVING A ROTATABLE CYLINDRICAL SHELL WHEREIN POWDERED MATERIAL IS PELLETED BY TUMBLING AND CASCADING FROM THE INNER SURFACE OF SAID SHELL, A FEED INLET LINE AT ONE END AND A PELLET OUTLET AT THE OPPOSITE END, MEANS CONNECTED WITH SAID PELLET OUTLET FOR SEPARATING EFFLULENT PELLETS INTO A PRODUCT STREAM AND A RECYCLE STREAM, A RECYCLE CONVEYOR MIXER CONNECTED WITH SAID MEANS SO AS TO RECEIVE RECYCLE PELLETS, A FEED CONVEYOR CONNECTED WITH AN INTERMEDIATE SECTION OF SAID CONVEYOR-MIXER FOR FEEDING POWDERED PELLETABLE MATERIAL THERETO, SEPARATE CONVEYOR MEANS CONNECTED WILTH THE DOWNSTREAM END OF SAID CONVEYOR-MIXER AND LEADING TO SAID FEED INLET LINE, SPRAYING MEANS IN SAID CONVEYOR-MIXER UPSTREAM OF SAID FEED CONVEYOR, AND SPRAYING MEANS IN SAID CONVEYOR-MIXER INTERMEDIATE SAID FEED CONVEYOR AND SAID CONVEYOR MEANS.
Claim 2
Dependent Claim
133 words
APPARATUS COMPRISING A ROTATABLE PELLET MILL HAVING A ROTATABLE CYLINDRICAL SHELL WHEREIN POWDERED MATERIAL IS PELLETED BY TUMBLING AND CASCADING FROM THE INNER SURFACE OF SAID SHELL, A FEED INLET LINE AT ONE END AND A PELLET OUTLET AT THE OPPOSITE END, MEANS CONNECTED WITH SAID PELLET OUTLET FOR SEPARATING EFFLULENT PELLETS INTO A PRODUCT STREAM AND A RECYCLE STREAM, A RECYCLE CONVEYOR MIXER CONNECTED WITH SAID MEANS SO AS TO RECEIVE RECYCLE PELLETS, A FEED CONVEYOR CONNECTED WITH AN INTERMEDIATE SECTION OF SAID CONVEYOR-MIXER FOR FEEDING POWDERED PELLETABLE MATERIAL THERETO, SEPARATE CONVEYOR MEANS CONNECTED WILTH THE DOWNSTREAM END OF SAID CONVEYOR-MIXER AND LEADING TO SAID FEED INLET LINE, SPRAYING MEANS IN SAID CONVEYOR-MIXER UPSTREAM OF SAID FEED CONVEYOR, AND SPRAYING MEANS IN SAID CONVEYOR-MIXER INTERMEDIATE SAID FEED CONVEYOR AND SAID CONVEYOR MEANS.
Claim 3
Dependent Claim
142 words
A PROCESS FOR PELLETING HOT CARBON BLACK COMPRISING PASSING A FEED AS HEREINAFTER DESCRIBED TO A ROTATING PELLET MILL SO AS TO FORM PELLETS THEREIN BY TUMBLING AND CASCADING SAID BLACK FROM THE INNER SURFACE OF THE ROTATING SHELL OF SAID MILL, WITHDRAWING A STREAM OF PELLETS FROM SAID MILL AND DIVIDING SAME INTO A PRODUCT STREAM AND A RECYCLE STREAM, SPRAYING WATER ONTO THE PELLETS IN SAID RECYCLE STREAM IN AN AMOUNT IN THE RANGE OF 2 TO 24 POUNDS PER 100 POUNDS OF CARBON BLACK WHICH WETS SAID BLACK WITHOUT FORMING A MUD THEREOF, ADMIXING WITH SAID RECYCLE STREAM A STREAM OF LOOSE FLOCCULENT CARBON BLACK SO AS TO PREPARE A MOIST FEED FOR SAID MILL, MECHANICALLY AGITATING AND MIXING SAID FEED FOR A SUBSTANTIAL PERIOD WHEREBY PELLETING THEREOF IS INITIATED, AND THEREAFTER PASSING SAID MOIST FEED TO SAID MILL.
Claim 4
Dependent Claim
142 words
A PROCESS FOR PELLETING HOT CARBON BLACK COMPRISING PASSING A FEED AS HEREINAFTER DESCRIBED TO A ROTATING PELLET MILL SO AS TO FORM PELLETS THEREIN BY TUMBLING AND CASCADING SAID BLACK FROM THE INNER SURFACE OF THE ROTATING SHELL OF SAID MILL, WITHDRAWING A STREAM OF PELLETS FROM SAID MILL AND DIVIDING SAME INTO A PRODUCT STREAM AND A RECYCLE STREAM, SPRAYING WATER ONTO THE PELLETS IN SAID RECYCLE STREAM IN AN AMOUNT IN THE RANGE OF 2 TO 24 POUNDS PER 100 POUNDS OF CARBON BLACK WHICH WETS SAID BLACK WITHOUT FORMING A MUD THEREOF, ADMIXING WITH SAID RECYCLE STREAM A STREAM OF LOOSE FLOCCULENT CARBON BLACK SO AS TO PREPARE A MOIST FEED FOR SAID MILL, MECHANICALLY AGITATING AND MIXING SAID FEED FOR A SUBSTANTIAL PERIOD WHEREBY PELLETING THEREOF IS INITIATED, AND THEREAFTER PASSING SAID MOIST FEED TO SAID MILL.
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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) | 1961-07-21 | 1962-01-20 | 1962-07-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-07-21 | 1966-01-20 | 1966-07-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-07-21 | 1970-01-20 | 1970-07-22 | $7700.00 | Window Closed / Lapsed |