Patent US3078703A successfully refreshed from Google Patents.
US3078703A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sieve arrangement in cylindrical containers for cellulosic pulp
Assignee: Metso Fiber Karlstad AB
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Filing: 1961-09-06
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Granted: 1963-02-26
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Expires: 1981-09-06
Abstract
No abstract record available.
Inventors
- 👤 Johan C F C Richter
- 👤 Ole J Richter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 16:25
CPC Classifications
D; D21; D21C; D21C9/00; D21C9/02; D21C9/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
108 words
APPARATUS FOR TREATING A SUSPENSION OF COMMINUTED FIBER MATERIAL IN A LIQUID MEDIUM COMPRISING: AN UPRIGHT CYLINDRICAL CONTAINER FOR ACCOMMODATING AN AXIAL FLOW OF THE SUSPENSION; AN ANNULAR SIEVE BODY WITHIN AND COAXIAL WITH SAID CONTAINER, SAID SIEVE BODY INCLUDING TWO ESSENTIALLY VERTICAL AND CONCENTRIC WALLS PLACED ONE WITHIN THE OTHER AND SPACED APART A SMALL DISTANCE SO AS TO FORM A CAVITY THEREBETWEEN, AT LEAST ONE OF SAID WALLS BEING APERTURED TO FORM A SIEVE FACE; MEANS MOUNTING SAID SIEVE BODY FOR ROTATION ABOUT THE AXIS OF SAID CONTAINER; SAID MOUNTING MEANS HAVING A BORE WHICH COMMUNICATES WITH SAID CAVITY AND WITH AN OUTLET FOR SAID CONTAINER.
Claim 2
Dependent Claim
108 words
APPARATUS FOR TREATING A SUSPENSION OF COMMINUTED FIBER MATERIAL IN A LIQUID MEDIUM COMPRISING: AN UPRIGHT CYLINDRICAL CONTAINER FOR ACCOMMODATING AN AXIAL FLOW OF THE SUSPENSION; AN ANNULAR SIEVE BODY WITHIN AND COAXIAL WITH SAID CONTAINER, SAID SIEVE BODY INCLUDING TWO ESSENTIALLY VERTICAL AND CONCENTRIC WALLS PLACED ONE WITHIN THE OTHER AND SPACED APART A SMALL DISTANCE SO AS TO FORM A CAVITY THEREBETWEEN, AT LEAST ONE OF SAID WALLS BEING APERTURED TO FORM A SIEVE FACE; MEANS MOUNTING SAID SIEVE BODY FOR ROTATION ABOUT THE AXIS OF SAID CONTAINER; SAID MOUNTING MEANS HAVING A BORE WHICH COMMUNICATES WITH SAID CAVITY AND WITH AN OUTLET FOR SAID CONTAINER.
References Cited (Backward Citations)
US1111408A
Cited
US2683366A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-02-25 | 1966-08-27 | 1967-02-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-02-25 | 1970-08-27 | 1971-02-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-02-25 | 1974-08-27 | 1975-02-26 | $7700.00 | Window Closed / Lapsed |