US3186647A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for the defibration of fibrous materials
Assignee: FLSmidth and Co AS
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Filing: 1962-10-19
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Granted: 1965-06-01
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Expires: 1982-10-19
Abstract
No abstract record available.
Inventors
- 👤 Jan Petersen Bacher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 22:48
CPC Classifications
D; D21; D21B; D21B1/00; D21B1/04; D21B1/12; B; B02; B02C; B02C17/00; B03; B03B; B03B1/00; B28; B28C; B28C5/00; B28C5/40; B28C5/404; C; C04; C04B; C04B20/00; C04B20/02; C04B20/08; D21D; D21D1/00; D21D1/20; D21D1/28
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
68 words
A METHOD OF DEFIBRATING ASBESTOS IN THE FORM OF SMALL FIBER BUNDLES, WHICH COMPRISES MAKING A MIXTURE OF THE ASBESTOS MATERIAL AS RECEIVED FROM THE QUARRY SUBSTANTIALLY FREE FROM GANGUE WITH WATER WITH THE WATER PRESENT IN AN AMOUNT NOT LESS THAN ABOUT 10% NOR MORE THAN ABOUT 50% BY WEIGHT OF THE MIXTURE AND SUBJECTING THE MIXTURE TO THE ACTION OF THE RODS IN A ROD MILL.
Claim 2
Independent Claim
68 words
A METHOD OF DEFIBRATING ASBESTOS IN THE FORM OF SMALL FIBER BUNDLES, WHICH COMPRISES MAKING A MIXTURE OF THE ASBESTOS MATERIAL AS RECEIVED FROM THE QUARRY SUBSTANTIALLY FREE FROM GANGUE WITH WATER WITH THE WATER PRESENT IN AN AMOUNT NOT LESS THAN ABOUT 10% NOR MORE THAN ABOUT 50% BY WEIGHT OF THE MIXTURE AND SUBJECTING THE MIXTURE TO THE ACTION OF THE RODS IN A ROD MILL.
Claim 3
Dependent Claim
61 words
A ROD MILL FOR USE IN DEFIBERING ASBESTOS IN THE FORM OF SMALL FIBER BUNDLES, WHICH COMPRISES A GENERALLY CYLINDRICAL SHELL HAVING AN UNOBSTRUCTED INTERIOR WITH END PLATES AND HOLLOW TRUNNIONS CONNECTED TO THE END PLATES AND EXTENDING AXIALLY THEREFROM, ONE TRUNNION HAVING AN OPEN OUTER END AND SERVING AS AN INLET, THE SHELL HAVING A PLURALITY OF UNOBSTRUCTED OUTLET OPENINGS
Claim 4
Dependent Claim
61 words
A ROD MILL FOR USE IN DEFIBERING ASBESTOS IN THE FORM OF SMALL FIBER BUNDLES, WHICH COMPRISES A GENERALLY CYLINDRICAL SHELL HAVING AN UNOBSTRUCTED INTERIOR WITH END PLATES AND HOLLOW TRUNNIONS CONNECTED TO THE END PLATES AND EXTENDING AXIALLY THEREFROM, ONE TRUNNION HAVING AN OPEN OUTER END AND SERVING AS AN INLET, THE SHELL HAVING A PLURALITY OF UNOBSTRUCTED OUTLET OPENINGS
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-05-31 | 1968-11-30 | 1969-06-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-05-31 | 1972-11-30 | 1973-06-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-05-31 | 1976-11-30 | 1977-06-01 | $7700.00 | Window Closed / Lapsed |