Patent US3297263A successfully refreshed from Google Patents.
US3297263A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Feeding device for a wood pulp grinder
Assignee: Metso Fiber Karlstad AB
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Filing: 1963-09-06
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Granted: 1967-01-10
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Expires: 1983-09-06
Abstract
No abstract record available.
Inventors
- 👤 Olof J G Hedberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-10 02:33
CPC Classifications
B; B27; B27L; B27L11/00; B27L11/06
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
124 words
IN A CONTINUOUSLY OPERATING MAGAZINE GRINDER FOR MAKING WOOD PULP, THE COMBINATION THEREWITH OF A FEEDING DEVICE, COMPRISING MEANS DEFINING A HOPPER, A PLURALITY OF ARMS PIVOTALLY MOUNTED ON OPPOSITE SIDES OF SAID HOPPER, EACH OF SAID ARMS HAVING A PRESSING SURFACE THEREON AND BEING POSITIONED SUCH THAT THE PRESSING SURFACES EXTEND INTO AND ARE MOVABLE IN SAID HOPPER IN A DIRECTION GENERALLY DOWNWARDLY AND INWARDLY, AND MEANS FOR SELECTIVELY PIVOTING SAID ARMS BETWEEN PREDETERMINED POSITIONS IN SAID HOPPER, AT LEAST ONE OF SAID ARMS ON EACH SIDE OF SAID HOPPER HAVING A GUARD PLATE EXTENDING UPWARDLY FROM THE OUTER ENDS OF THE PRESSING SURFACE, SAID GUARD PLATE BEING CURVED AND BEING DISPOSED GENERALLY CONCENTRICALLY TO THE AXIS ABOUT WHICH THE ARM IS PIVOTED.
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) | 1970-01-09 | 1970-07-11 | 1971-01-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-09 | 1974-07-11 | 1975-01-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-09 | 1978-07-11 | 1979-01-10 | $7700.00 | Window Closed / Lapsed |