US3826713A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Paper machine press section and method for using same
Assignee: Tampella Oy AB
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Filing: 1972-04-28
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Granted: 1974-07-30
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Expires: 1992-04-28
Abstract
Abstract A PAPER WEB AND ITS SUPPORTING FELT OR A FELT ONLY IS DEWATERED EMPLOYING A PRESS ASSEMBLY COMPRISING A PAIR OF PRESS ROLLS IN NIP-DEFINING RELATION WHEREIN ONE OF THE PRESS ROLLS IS A BLIND DRILLED ROLL. ON THE OFF-RUNNING SIDE OF THE NIP THE FELT IS GUIDED AWAY FROM THE NIP ON THE SIDE OF THE NIP TANGENT PLANE OPPOSITE THE BLIND DRILLED ROLL AT AN ANGLE DEFINED BETWEEN THE FELT AND THE COMMON TANGENT PLANE. THE BLIND DRILLED ROLL IS DIPOSED IN A SAVE-ALL HAVING A SIDE WALL TERMINATING AT AN UPPER EDGE SPACED CLOSELY ADJACENT TO THE COMMON TANGENT PLANE AND THE NIP PREVENT WATER FROM ENTERING THE FELT ON THE OFF-RUNNING SIDE OF THE NIP. D R A W I N G
Inventors
- 👤 E Nykopp
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 11:45
CPC Classifications
D; D21; D21F; D21F3/00; D21F3/02
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) | 1977-07-29 | 1978-01-28 | 1978-07-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-07-29 | 1982-01-28 | 1982-07-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-07-29 | 1986-01-28 | 1986-07-30 | $7700.00 | Window Closed / Lapsed |