US3278039A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary filter drum for concentrating diluted fibre suspensions
Assignee: VARGONS MEK VERKST AB
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Filing: 1966-01-06
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Granted: 1966-10-11
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Expires: 1986-01-06
Abstract
No abstract record available.
Inventors
- 👤 Nilsson Ivar Linus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 14:46
CPC Classifications
D; D21; D21F; D21F1/00; D21F1/66; B; B01; B01D; B01D33/00; B01D33/06; B01D33/11; B01D33/44; B01D33/48; B01D33/50; B01D33/70; B01D33/76
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
141 words
A ROTARY FILTER DRUM FOR CONCENTRATING DILUTED FIBRE SUSPENSIONS COMPRISING TWO SOLID END WALLS, A NUMBER OF PARALLEL RODS FORMING TOGETHER A CYLINDRICAL CAGE WHICH EXTENDS AXIALLY BETWEEN SAID END WALLS, BRACKETS PROJECTING RADIALLY FROM THE RODS AND ARRANGED IN AXIAL AS WELL AS IN PERIPHERAL ROWS, A RING MOUNTED ON EACH PERIPHERAL ROWS OF BRACKET, A BELLOWS-SHAPED STRAINER JACKET ENCLOSING THE CAGE AND ITS RINGS BETWEEN THE END WALLS, EACH OF SAID RINGS SERVING TO SUPPORT INTERNALLY ONE FOLD OF THE BELLOWS, AN AXIAL DRUM INLET FOR FIBRE SUSPENSION TO BE FILTERED, A FUNNEL PROVIDED WITHIN THE DRUM TO COLLECT CONCENTRATED FIBRES WHICH ARE TO BE REMOVED FROM THE INSIDE OF THE STRAINER ABOVE THE LIQUID LEVEL IN THE DRUM, AND AN OUTLET FROM SAID FUNNEL EXTENDING AXIALLY THROUGH ONE OF THE END WALLS, CHARACTERIZED IN THAT SAID BRACKETS CONSIST
Claim 2
Dependent Claim
141 words
A ROTARY FILTER DRUM FOR CONCENTRATING DILUTED FIBRE SUSPENSIONS COMPRISING TWO SOLID END WALLS, A NUMBER OF PARALLEL RODS FORMING TOGETHER A CYLINDRICAL CAGE WHICH EXTENDS AXIALLY BETWEEN SAID END WALLS, BRACKETS PROJECTING RADIALLY FROM THE RODS AND ARRANGED IN AXIAL AS WELL AS IN PERIPHERAL ROWS, A RING MOUNTED ON EACH PERIPHERAL ROWS OF BRACKET, A BELLOWS-SHAPED STRAINER JACKET ENCLOSING THE CAGE AND ITS RINGS BETWEEN THE END WALLS, EACH OF SAID RINGS SERVING TO SUPPORT INTERNALLY ONE FOLD OF THE BELLOWS, AN AXIAL DRUM INLET FOR FIBRE SUSPENSION TO BE FILTERED, A FUNNEL PROVIDED WITHIN THE DRUM TO COLLECT CONCENTRATED FIBRES WHICH ARE TO BE REMOVED FROM THE INSIDE OF THE STRAINER ABOVE THE LIQUID LEVEL IN THE DRUM, AND AN OUTLET FROM SAID FUNNEL EXTENDING AXIALLY THROUGH ONE OF THE END WALLS, CHARACTERIZED IN THAT SAID BRACKETS CONSIST
References Cited (Backward Citations)
US311873A
Cited
US2891671A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-10-10 | 1970-04-11 | 1970-10-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-10 | 1974-04-11 | 1974-10-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-10 | 1978-04-11 | 1978-10-11 | $7700.00 | Window Closed / Lapsed |