Patent US3263598A successfully refreshed from Google Patents.
US3263598A
Expired / Lapsed
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Apparatus for dewatering pulp
Assignee: Svenska Cellulosa AB
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Filing: 1964-04-02
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Granted: 1966-08-02
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Expires: 1984-04-02
Abstract
No abstract record available.
Inventors
- 👤 Sylla Klaus Ferdinand
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:07
CPC Classifications
D; D21; D21C; D21C9/00; D21C9/18; D21F; D21F1/00; D21F1/66
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
88 words
APPARATUS FOR DEWATERING FIBROUS PULP COMPRISING A TROUGH HAVING A BOTTOM AND SIDE WALLS, TWO PARALLEL, SUBSTANTIALLY HORIZONTALLY DISPOSED, CONTIGUOUS, ROLL-LIKE, PERFORATED PRESS MEMBERS MOUNTED TO ROTATE WITH AT LEAST THEIR LOWER PORTIONS WITHIN SAID TROUGH BUT SPACED FROM THE BOTTOM AND SIDES THEREOF, MEANS IN SAID SIDE WALLS OF SAID TROUGH FOR SUPPLYING PULP THERETO IN QUANTITY SUFFICIENT TO MAINTAIN A BODY THEREOF IN SAID TROUGH WITH ITS UPPER SURFACE IN CONTACT WITH SAID MEMBERS AND AN OUTLET IN THE BOTTOM OF SAID TROUGH POSITIONED VERTICALLY BELOW
Claim 2
Dependent Claim
88 words
APPARATUS FOR DEWATERING FIBROUS PULP COMPRISING A TROUGH HAVING A BOTTOM AND SIDE WALLS, TWO PARALLEL, SUBSTANTIALLY HORIZONTALLY DISPOSED, CONTIGUOUS, ROLL-LIKE, PERFORATED PRESS MEMBERS MOUNTED TO ROTATE WITH AT LEAST THEIR LOWER PORTIONS WITHIN SAID TROUGH BUT SPACED FROM THE BOTTOM AND SIDES THEREOF, MEANS IN SAID SIDE WALLS OF SAID TROUGH FOR SUPPLYING PULP THERETO IN QUANTITY SUFFICIENT TO MAINTAIN A BODY THEREOF IN SAID TROUGH WITH ITS UPPER SURFACE IN CONTACT WITH SAID MEMBERS AND AN OUTLET IN THE BOTTOM OF SAID TROUGH POSITIONED VERTICALLY BELOW
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) | 1969-08-01 | 1970-01-31 | 1970-08-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-01 | 1974-01-31 | 1974-08-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-01 | 1978-01-31 | 1978-08-02 | $7700.00 | Window Closed / Lapsed |