US2674522A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for pelletizing carbon black
Assignee: JM Huber Corp
•
Filing: 1946-06-21
•
Granted: 1954-04-06
•
Expires: 1966-06-21
Abstract
No abstract record available.
Inventors
- 👤 Takewell Robert Boyce
- 👤 Frank W Selfridge
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 06:40
CPC Classifications
C; C09; C09C; C09C1/00; C09C1/44; C09C1/48; C09C1/56; C09C1/60; C01; C01P; C01P2006/00; C01P2006/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
176 words
APPARATUS FOR PELLETIZING DRY CARBON BLACK WHICH COMPRISES A HORIZONTAL DRUM AT LEAST 16 INCHES LONG MOUNTED FOR ROTATION ABOUT ITS HORIZONTAL AXIS, A WALL AT THE INLET END OF THE DRUM PROVIDED WITH AN INLET OPENING AT ITS CENTER, A WALL AT THE OTHER END OF THE DRUM HAVING AN OUTLET OPENING AT ITS CENTER SUBSTANTIALLY LARGER THAN THE INLET OPENING, MEANS FOR SLOWLY ROTATING THE DRUM, A SURGE TANK ADJACENT THE INLET END OF THE DRUM, FEEDING MEANS AT THE END OF THE SURGE TANK THAT IS REMOTE FROM THE DRUM FEEDING RAW CARBON BLACK TO THE SURGE TANK AT SUCH END, A FEEDING AGITATOR IN THE SURGE TANK FOR DENSIFYING THE CARBON BLACK AND FORCING IT TO THE END OF THE TANK NEAREST THE DRUM, AND A CONTROLLABLE POSITIVE FEED DISTRIBUTOR EXTENDING FROM THE NEAR END OF THE SURGE TANK THROUGH THE INLET OPENING INTO THE DRUM FOR A DISTANCE WITHIN THE RANGE OF ABOUT ONE-FOURTH TO ABOUT THREE-FOURTHS THE LENGTH OF THE DRUM AND HAVING CARBON BLACK DISCHARGING MEANS THROUGHOUT SUCH DISTANCE.
Claim 2
Dependent Claim
176 words
APPARATUS FOR PELLETIZING DRY CARBON BLACK WHICH COMPRISES A HORIZONTAL DRUM AT LEAST 16 INCHES LONG MOUNTED FOR ROTATION ABOUT ITS HORIZONTAL AXIS, A WALL AT THE INLET END OF THE DRUM PROVIDED WITH AN INLET OPENING AT ITS CENTER, A WALL AT THE OTHER END OF THE DRUM HAVING AN OUTLET OPENING AT ITS CENTER SUBSTANTIALLY LARGER THAN THE INLET OPENING, MEANS FOR SLOWLY ROTATING THE DRUM, A SURGE TANK ADJACENT THE INLET END OF THE DRUM, FEEDING MEANS AT THE END OF THE SURGE TANK THAT IS REMOTE FROM THE DRUM FEEDING RAW CARBON BLACK TO THE SURGE TANK AT SUCH END, A FEEDING AGITATOR IN THE SURGE TANK FOR DENSIFYING THE CARBON BLACK AND FORCING IT TO THE END OF THE TANK NEAREST THE DRUM, AND A CONTROLLABLE POSITIVE FEED DISTRIBUTOR EXTENDING FROM THE NEAR END OF THE SURGE TANK THROUGH THE INLET OPENING INTO THE DRUM FOR A DISTANCE WITHIN THE RANGE OF ABOUT ONE-FOURTH TO ABOUT THREE-FOURTHS THE LENGTH OF THE DRUM AND HAVING CARBON BLACK DISCHARGING MEANS THROUGHOUT SUCH DISTANCE.
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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) | 1957-04-05 | 1957-10-05 | 1958-04-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-04-05 | 1961-10-05 | 1962-04-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-04-05 | 1965-10-05 | 1966-04-06 | $7700.00 | Window Closed / Lapsed |