US3752734A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multi ply paper machine
Assignee: Black Clawson Co
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Filing: 1970-08-12
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Granted: 1973-08-14
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Expires: 1990-08-12
Abstract
Abstract A MULTI-PLY PAPER MACHINE UTILIZES A PAIR OF FORMING BELTS WITH ONE BELT HAVING HORIZONTAL AND VERTICAL RUNS AND THE SECOND BELT HAVING A VERTICAL RUN IN OPPOSITION TO THE VERTICAL RUN OF THE FIRST BELT AND DEFINING THEREWITH A VERTICALLY EXTENDING FORMING ZONE. PAPERMAKING STOCK IS DEPOSITED ON THE HORIZONTAL RUN OF THE FIRST BELT AND LIQUID DRAINS THEREFROM AS IT PROGRESSES TOWARDS THE VERTICAL FORMING ZONE. THE MAJOR PORTION OF THE STOCK MAKING UP THE FINISHED WEB IS THEN DEPOSITED IN THE VERTICAL FORMING ZONE, WITH PRINCIPAL DRINAGE OF THIS STOCK DEPOSITION BEING THROUGH THE VERTICAL RUN OF THE SECOND BELT.
Inventors
- 👤 W Notbohm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 16:10
CPC Classifications
D; D21; D21F; D21F11/00; D21F11/02; D21F11/04
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) | 1976-08-13 | 1977-02-12 | 1977-08-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-13 | 1981-02-12 | 1981-08-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-13 | 1985-02-12 | 1985-08-14 | $7700.00 | Window Closed / Lapsed |