Patent US3835472A successfully refreshed from Google Patents.
Patent US2730933A successfully refreshed from Google Patents.
US2730933A
Expired / Lapsed
US
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Method and apparatus for the manufacture of sheet material from solid particles suspended in liquid media
Assignee: Individual
•
Filing: 1953-06-04
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Granted: 1956-01-17
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Expires: 1973-06-04
Abstract
No abstract record available.
Inventors
- 👤 William G Reynolds
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 09:45
CPC Classifications
D; D21; D21G; D21G9/00; D21F; D21F1/00; D21F2/00; D21F9/00; D21F9/003; Y; Y10; Y10S; Y10S425/00; Y10S425/119
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
150 words
IN THE MANUFACTURE OF PAPER FROM A WOOD PULPWATER SUSPENSION ON A MOVING FORAMINOUS BELT, THE METHOD OF REMOVING THE SHEET FROM THE BELT WHICH COMPRISES SUPERPOSING A SECOND FORAMINOUS BELT OVER THE FIRST MENTIONED BELT, MOVING IN THE SAME DIRECTION AND EXTENDING BEYOND AND FIRST MENTIONED BELT IN THE DIRECTION OF MOVEMENT THEREOF, CONVEYING THE PAPER BEING FORMED BETWEEN SAID BELTS WHEREBY IT IS PRESSED INTO THE SURFACE IRREGULARITIES OF THE BELTS, SUBJECTING THE SHEET BEING FORMED TO AN UPWARD BLAST OF AIR THROUGH THE LOWER BELT AT A POINT INWARDLY OF THE DISCHARGE END THEREOF TO LOOSEN THE SHEET THEREFROM, SUBJECTING THE SHEET TO A DOWNWARD BLAST OF AIR THROUGH UPPER BELT BEYOND THE LOWER BELT AND INWARDLY OF THE DISCHARGE END OF SAID UPPER BELT TO REMOVE THE SHEET THEREFROM, AND CONVEYING THE SHEET AWAY IN A DIRECTION PARALLEL TO THE DIRECTION OF MOVEMENT OF THE BELTS.
Claim 2
Dependent Claim
150 words
IN THE MANUFACTURE OF PAPER FROM A WOOD PULPWATER SUSPENSION ON A MOVING FORAMINOUS BELT, THE METHOD OF REMOVING THE SHEET FROM THE BELT WHICH COMPRISES SUPERPOSING A SECOND FORAMINOUS BELT OVER THE FIRST MENTIONED BELT, MOVING IN THE SAME DIRECTION AND EXTENDING BEYOND AND FIRST MENTIONED BELT IN THE DIRECTION OF MOVEMENT THEREOF, CONVEYING THE PAPER BEING FORMED BETWEEN SAID BELTS WHEREBY IT IS PRESSED INTO THE SURFACE IRREGULARITIES OF THE BELTS, SUBJECTING THE SHEET BEING FORMED TO AN UPWARD BLAST OF AIR THROUGH THE LOWER BELT AT A POINT INWARDLY OF THE DISCHARGE END THEREOF TO LOOSEN THE SHEET THEREFROM, SUBJECTING THE SHEET TO A DOWNWARD BLAST OF AIR THROUGH UPPER BELT BEYOND THE LOWER BELT AND INWARDLY OF THE DISCHARGE END OF SAID UPPER BELT TO REMOVE THE SHEET THEREFROM, AND CONVEYING THE SHEET AWAY IN A DIRECTION PARALLEL TO THE DIRECTION OF MOVEMENT OF THE BELTS.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-01-16 | 1959-07-18 | 1960-01-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-01-16 | 1963-07-18 | 1964-01-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-01-16 | 1967-07-18 | 1968-01-17 | $7700.00 | Window Closed / Lapsed |