Patent US3145936A successfully refreshed from Google Patents.
US3145936A
Expired / Lapsed
US
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Pulping apparatus
Assignee: E D JONES CORP
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Filing: 1961-05-29
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Granted: 1964-08-25
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Expires: 1981-05-29
Abstract
No abstract record available.
Inventors
- 👤 William W Monks
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 14:27
CPC Classifications
D; D21; D21B; D21B1/00; D21B1/04; D21B1/12; D21B1/30; D21B1/34; D21B1/345; D21B1/347
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
72 words
IN A MACHINE FOR PULPING MATERIAL, A ROTOR HAVING A FREE END AND OUTWARDLY PROJECTING FINS TO PRODUCE CIRCULATION OF MATERIAL AWAY FROM THE AXIS OF THE ROTOR, AND A SPIRAL VANE EXTENDING AXIALLY FROM SAID END, THE SPIRAL PROGRESSING IN THE DIRECTION OPPOSITE TO THE DIRECTION OF ROTATION FROM THE ROTOR TOWARD THE TIP OF THE VANE SO AS TO TEND TO PUMP MATERIAL AWAY FROM SAID END ALONG SAID AXIS.
Claim 2
Dependent Claim
72 words
IN A MACHINE FOR PULPING MATERIAL, A ROTOR HAVING A FREE END AND OUTWARDLY PROJECTING FINS TO PRODUCE CIRCULATION OF MATERIAL AWAY FROM THE AXIS OF THE ROTOR, AND A SPIRAL VANE EXTENDING AXIALLY FROM SAID END, THE SPIRAL PROGRESSING IN THE DIRECTION OPPOSITE TO THE DIRECTION OF ROTATION FROM THE ROTOR TOWARD THE TIP OF THE VANE SO AS TO TEND TO PUMP MATERIAL AWAY FROM SAID END ALONG SAID AXIS.
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) | 1967-08-25 | 1968-02-24 | 1968-08-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-08-25 | 1972-02-24 | 1972-08-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-08-25 | 1976-02-24 | 1976-08-25 | $7700.00 | Window Closed / Lapsed |