US3131424A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lining for drum-type or disk-type balling device
Assignee: Yawata Iron and Steel Co Ltd
•
Filing: 1959-12-07
•
Granted: 1964-05-05
•
Expires: 1979-12-07
Abstract
No abstract record available.
Inventors
- 👤 Ishimitsu Akitoshi
- 👤 Yoshikawa Yutaka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 20:40
CPC Classifications
C; C22; C22B; C22B1/00; C22B1/14; C22B1/24; C22B1/2406; B; B01; B01J; B01J2/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
89 words
IN A BALLING DRUM APPARATUS FOR OBTAINING PELLETS FROM FINE ORES, THE IMPROVEMENT COMRISING A FOUNDATION LINING WITH A ROUGHENED SURFACE ON THE INTERIOR WALL OF SAID DRUM, SAID LINING CONSISTING ESSENTIALLY OF A BINDER AND ROUGH GRANULES OF IRREGULAR SHAPE AND OF A HARD POROUS MATERIAL AND HAVING SHARP CORNERS EMBEDDED IN THE BINDER, AT LEAST A PORTION OF SAID ROUGH GRANULES HAVING THE SHARP CORNERS THEREOF PROJECTING FROM THE SURFACE A LINING OF THE MATERIAL BEING BALLED IS BUILT ON SAID ROUGHENED SURFACE OF THE FOUNDATION LINING.
Claim 2
Dependent Claim
89 words
IN A BALLING DRUM APPARATUS FOR OBTAINING PELLETS FROM FINE ORES, THE IMPROVEMENT COMRISING A FOUNDATION LINING WITH A ROUGHENED SURFACE ON THE INTERIOR WALL OF SAID DRUM, SAID LINING CONSISTING ESSENTIALLY OF A BINDER AND ROUGH GRANULES OF IRREGULAR SHAPE AND OF A HARD POROUS MATERIAL AND HAVING SHARP CORNERS EMBEDDED IN THE BINDER, AT LEAST A PORTION OF SAID ROUGH GRANULES HAVING THE SHARP CORNERS THEREOF PROJECTING FROM THE SURFACE A LINING OF THE MATERIAL BEING BALLED IS BUILT ON SAID ROUGHENED SURFACE OF THE FOUNDATION LINING.
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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) | 1967-05-05 | 1967-11-04 | 1968-05-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-05-05 | 1971-11-04 | 1972-05-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-05-05 | 1975-11-04 | 1976-05-05 | $7700.00 | Window Closed / Lapsed |