Patent US3138336A successfully refreshed from Google Patents.
US3138336A
Expired / Lapsed
US
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Pulping machine
Assignee: Individual
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Filing: 1961-07-10
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Granted: 1964-06-23
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Expires: 1981-07-10
Abstract
No abstract record available.
Inventors
- 👤 Lejeune Emile
- 👤 Boutin Juliette
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 23:46
CPC Classifications
D; D21; D21D; D21D1/00; D21D1/20; D21D1/22; B; B02; B02C; B02C2/00; B02C2/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
179 words
A PULPING MACHINE HAVING DIVERGING FRUSTOCONICAL RELATIVELY ROTATABLE WHOLLY IMPERVIOUS SURFACES DEFINING A FIRST ANNULAR ZONE THEREBETWEEN AND COOPERATING PROJECTIONS ON SAID SURFACES FOR SHREDDING FIBROUS STOCK IN SAID FIRST ZONE; CYLINDRICAL RELATIVELY ROTATABLE SURFACES DEFINING A SECOND ANNULAR ZONE THEREBETWEEN CONTIGUOUS WITH THE LARGER END OF SAID FIRST ZONE, THE OUTER ONE OF SAID CYLINDRICAL SURFACES BEING IN THE FORM OF A SCREEN AND THE OTHER OF SAID CYLINDRICAL SURFACES HAVING PROJECTIONS THEREON FOR FORCING SHREDDED STOCK THROUGH SAID SCREEN; AN OUTLET FOR SCREENED PULP CONNECTING WITH A SIDE OF THE SECOND ZONE THROUGH SAID SCREEN DEFINING THE OUTER CYLINDRICAL SURFACE THEREOF; A DISCHARGE CHAMBER CONNECTING WITH THE END OF THE SECOND ANNULAR ZONE REMOTE FROM THE FIRST ZONE AND DEFINING A THIRD ZONE FOR THE DISCHARGE OF SCREENING TAILS FROM SAID MACHINE; AND INLET MEANS CONNECTING TANGENTIALLY WITH THE NARROWER END OF THE FIRST ANNULAR ZONE TO FEED STOCK THERETO FOR CONTINUOUS HELICAL ADVANCE OF SAID STOCK THROUGH THE FIRST ZONE TO BE SHREDDED THEREIN AND THENCE FOR ADVANCE THROUGH SAID SECOND ZONE TO BE SCREENED THEREIN.
Claim 2
Dependent Claim
179 words
A PULPING MACHINE HAVING DIVERGING FRUSTOCONICAL RELATIVELY ROTATABLE WHOLLY IMPERVIOUS SURFACES DEFINING A FIRST ANNULAR ZONE THEREBETWEEN AND COOPERATING PROJECTIONS ON SAID SURFACES FOR SHREDDING FIBROUS STOCK IN SAID FIRST ZONE; CYLINDRICAL RELATIVELY ROTATABLE SURFACES DEFINING A SECOND ANNULAR ZONE THEREBETWEEN CONTIGUOUS WITH THE LARGER END OF SAID FIRST ZONE, THE OUTER ONE OF SAID CYLINDRICAL SURFACES BEING IN THE FORM OF A SCREEN AND THE OTHER OF SAID CYLINDRICAL SURFACES HAVING PROJECTIONS THEREON FOR FORCING SHREDDED STOCK THROUGH SAID SCREEN; AN OUTLET FOR SCREENED PULP CONNECTING WITH A SIDE OF THE SECOND ZONE THROUGH SAID SCREEN DEFINING THE OUTER CYLINDRICAL SURFACE THEREOF; A DISCHARGE CHAMBER CONNECTING WITH THE END OF THE SECOND ANNULAR ZONE REMOTE FROM THE FIRST ZONE AND DEFINING A THIRD ZONE FOR THE DISCHARGE OF SCREENING TAILS FROM SAID MACHINE; AND INLET MEANS CONNECTING TANGENTIALLY WITH THE NARROWER END OF THE FIRST ANNULAR ZONE TO FEED STOCK THERETO FOR CONTINUOUS HELICAL ADVANCE OF SAID STOCK THROUGH THE FIRST ZONE TO BE SHREDDED THEREIN AND THENCE FOR ADVANCE THROUGH SAID SECOND ZONE TO BE SCREENED THEREIN.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-06-23 | 1967-12-23 | 1968-06-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-06-23 | 1971-12-23 | 1972-06-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-06-23 | 1975-12-23 | 1976-06-23 | $7700.00 | Window Closed / Lapsed |