Patent US2748666A successfully refreshed from Google Patents.
US2748666A
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Method for handling high consistency paper pulp
Assignee: Allis Chalmers Corp
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Filing: 1953-10-07
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Granted: 1956-06-05
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Expires: 1973-10-07
Abstract
No abstract record available.
Inventors
- 👤 Frank R Forrest
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 20:29
CPC Classifications
D; D21; D21D; D21D1/00; D21D1/20; D21D1/32; Y; Y10; Y10T; Y10T137/00; Y10T137/0318
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
118 words
A METHOD OF WITHDRAWING PULP FROM A MASS OF PULP HAVING A FREE SURFACE EXPOSED TO THE ATMOSPHERE COMPRISING THE STEPS OF IMPELLING BENEATH THE FREE SURFACE OF THE PULP A COLUMNAR STREAM OF PULP IN A HORIZONTAL DIRECTION, RECEIVING THE COLUMNAR STREAM OF PULP IN A CONDUIT HAVING AN INLET POSITIONED BENEATH THE FREE SURFACE OF THE PULP IN COAXIAL ALIGNMENT WITH THE COLUMNAR STREAM, MAINTAINING A SUCTION PRESSURE IN THE CONDUIT, AND CONTINUOUSLY AGITATING THE MASS OF PULP TO EFFECT GRAVITY FEEDING OF PULP INTO THE COLUMNAR STREAM BETWEEN THE ENDS OF THE COLUMNAR STREAM AND THE REMOVAL OF POCKETS OF AIR ACCUMULATED IN THE MASS OF PULP VERTICALLY THROUGH THE FREE SURFACE OF THE PULP.
Claim 2
Independent Claim
118 words
A METHOD OF WITHDRAWING PULP FROM A MASS OF PULP HAVING A FREE SURFACE EXPOSED TO THE ATMOSPHERE COMPRISING THE STEPS OF IMPELLING BENEATH THE FREE SURFACE OF THE PULP A COLUMNAR STREAM OF PULP IN A HORIZONTAL DIRECTION, RECEIVING THE COLUMNAR STREAM OF PULP IN A CONDUIT HAVING AN INLET POSITIONED BENEATH THE FREE SURFACE OF THE PULP IN COAXIAL ALIGNMENT WITH THE COLUMNAR STREAM, MAINTAINING A SUCTION PRESSURE IN THE CONDUIT, AND CONTINUOUSLY AGITATING THE MASS OF PULP TO EFFECT GRAVITY FEEDING OF PULP INTO THE COLUMNAR STREAM BETWEEN THE ENDS OF THE COLUMNAR STREAM AND THE REMOVAL OF POCKETS OF AIR ACCUMULATED IN THE MASS OF PULP VERTICALLY THROUGH THE FREE SURFACE OF THE PULP.
References Cited (Backward Citations)
US1882991A
Cited
US2270847A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-06-05 | 1959-12-05 | 1960-06-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-06-05 | 1963-12-05 | 1964-06-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-06-05 | 1967-12-05 | 1968-06-05 | $7700.00 | Window Closed / Lapsed |