Patent US3741866A successfully refreshed from Google Patents.
US3741866A
Expired / Lapsed
US
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Suction box arrangement for a paper machine
Assignee: Feldmuehle Anlagen und Produktion GmbH
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Filing: 1971-06-15
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Granted: 1973-06-26
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Expires: 1991-06-15
Abstract
Abstract THE COVER OF A SUCTION BOX CONSISTS OF UNITS JUXTAPOSED OVER THE WIDTH OF THE MACHINE AND INDIVIDUALLY FASTENED TO THE RIGID BASE OF THE BOX. EACH UNIT CONSISTS OF A GROUP OF PARALLEL RAIL SECTIONS SPACEDLY JUTAPOSED IN THE DIRECTION IN WHICH THE FOURDRINER WIRE OR SCREEN MOVES OVER THE COVER AND OF ONE OR MORE SUPPORTING ELEMENTS SECURED TO ALL THE SECTIONS IN THE GROUP AND CONNECTING THE SAME INTO A UNIT.
Inventors
- 👤 H Jud
- 👤 M Nussbaum
- 👤 K Fuchs
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 22:09
CPC Classifications
D; D21; D21F; D21F1/00; D21F1/48; D21F1/52; D21F1/523; D21F1/483
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) | 1976-06-25 | 1976-12-25 | 1977-06-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-06-25 | 1980-12-25 | 1981-06-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-06-25 | 1984-12-25 | 1985-06-26 | $7700.00 | Window Closed / Lapsed |