Patent US3591452A successfully refreshed from Google Patents.
US3591452A
Expired / Lapsed
US
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Apparatus for feeding paper stock to a paper machine
Assignee: Tampella Oy AB
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Filing: 1969-01-17
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Granted: 1971-07-06
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Expires: 1989-01-17
Abstract
Abstract AN APARATUS FOR FEEDING PAPER STOCK TO A PAPER MACHINE IN WHICH EVEN DISTRIBUTION OF THE PULP STOCK FREE FROM FIBER ACCUMULATIONS IS OBTAINED ACROSS THE ENTIRE WIDTH OF THE PAPER MACHINE. THE STOCK FLOWS FROM DISTRIBUTION TUBES INTO A CHAMBER THROUGH A PLURALITY OF TRANSVERSE INLET ROWS AND IMPINGES ON THE OPPOSITE WALL OF THE CHAMBER. THE INLET WALL IS PROVIDED WITH HUMPS WHICH EXTEND ACRODD THE CHAMBER, BOTH PARALLEL TO AND BETWEEN EACH PAIR OF INLET ROWS. THE STOCK FLOWS FROM THE CHAMBER THROUGH A DISCHARGE CHANNEL AND TO THE HEAD BOX OF THE PAPER MACHINE.
Inventors
- 👤 Erik A Nykopp
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 17:33
CPC Classifications
D; D21; D21F; D21F1/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-07-05 | 1975-01-04 | 1975-07-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-05 | 1979-01-04 | 1979-07-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-05 | 1983-01-04 | 1983-07-06 | $7700.00 | Window Closed / Lapsed |