Patent US5003473A successfully refreshed from Google Patents.
Patent US3225934A successfully refreshed from Google Patents.
US3225934A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Centrifuge
Assignee: Machinefabriek Reineveld NV
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Filing: 1962-05-14
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Granted: 1965-12-28
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Expires: 1982-05-14
Abstract
No abstract record available.
Inventors
- 👤 Pieter Van Riel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 23:30
CPC Classifications
F; F16; F16C; F16C19/00; F16C19/54; B; B04; B04B; B04B3/00; B04B3/06; B04B9/00; B04B9/12; F16C23/00; F16C23/06; F16C23/08; F16C23/082; F16C23/086; F16C19/22; F16C19/30; F16C2320/00; F16C2320/42
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
192 words
A CENTRIFUGE FOR THE SEPARATION OF LIQUIDS FROM SOLIDS, COMPRISING: A HOUSING; A CENTRIFUGE DRUM MOUNTED IN SAID HOUSING FOR ROTATION ABOUT A GENERALLY VERTICAL AXIS; A HEAD RESILIENTLY MOUNTED ON SAID HOUSING AND ROTATABLY SUPPORTING SAID DRUM; A SHAFT CONNECTED WITH SAID DRUM AND EXTENDING INTO SAID HEAD; A PAIR OF AXIALLY SPACED BEARINGS WITHIN SAID HEAD FOR JOURNALING SAID SHAFT THEREIN, SAID BEARINGS EACH BEING PROVIDED WITH AN INNER RACE ENTRAINED BY SAID SHAFT AND AN OUTER RACE ENTRAINED BY SAID HEAD, SAID OUTER RACES BOTH BEING FORMED WITH RACEWAYS CONFORMING TO SEGMENTS OF A COMMON SPHERICAL SURFACE, SAID BEARINGS EACH BEING PROVIDED WITH A PLURALITY OF ANGULARLY SPACED ROLLERS HAVING SURFACES COMPLEMENTARY TO THE RESPECTIVE RACEWAYS AND AXES INCLINED TO THE AXIS OF SAID SHAFT; SPACING MEANS WITHIN SAID HEAD AND SURROUNDING SAID SHAFT WHILE ENGAGING SAID INNER RACES FOR MAINTAINING MUTUAL AXIAL SPACING BETWEEN SAID INNE RACES OF SAID BEARINGS, SAID HEAD FORMING A BEARING CASING SURROUNDING SAID BEARINGS AND SAID SPACING MEANS WHILE DEFINING AN ANNULAR LUBRICANT CHAMBER THEREWITH; A PAIR OF SEALING MEANS SURROUNDING SAID SHAFT AT OPPOSITE ENDS OF SAID CASING AXIALLY OUTWARDLY OF SAID
Claim 2
Dependent Claim
192 words
A CENTRIFUGE FOR THE SEPARATION OF LIQUIDS FROM SOLIDS, COMPRISING: A HOUSING; A CENTRIFUGE DRUM MOUNTED IN SAID HOUSING FOR ROTATION ABOUT A GENERALLY VERTICAL AXIS; A HEAD RESILIENTLY MOUNTED ON SAID HOUSING AND ROTATABLY SUPPORTING SAID DRUM; A SHAFT CONNECTED WITH SAID DRUM AND EXTENDING INTO SAID HEAD; A PAIR OF AXIALLY SPACED BEARINGS WITHIN SAID HEAD FOR JOURNALING SAID SHAFT THEREIN, SAID BEARINGS EACH BEING PROVIDED WITH AN INNER RACE ENTRAINED BY SAID SHAFT AND AN OUTER RACE ENTRAINED BY SAID HEAD, SAID OUTER RACES BOTH BEING FORMED WITH RACEWAYS CONFORMING TO SEGMENTS OF A COMMON SPHERICAL SURFACE, SAID BEARINGS EACH BEING PROVIDED WITH A PLURALITY OF ANGULARLY SPACED ROLLERS HAVING SURFACES COMPLEMENTARY TO THE RESPECTIVE RACEWAYS AND AXES INCLINED TO THE AXIS OF SAID SHAFT; SPACING MEANS WITHIN SAID HEAD AND SURROUNDING SAID SHAFT WHILE ENGAGING SAID INNER RACES FOR MAINTAINING MUTUAL AXIAL SPACING BETWEEN SAID INNE RACES OF SAID BEARINGS, SAID HEAD FORMING A BEARING CASING SURROUNDING SAID BEARINGS AND SAID SPACING MEANS WHILE DEFINING AN ANNULAR LUBRICANT CHAMBER THEREWITH; A PAIR OF SEALING MEANS SURROUNDING SAID SHAFT AT OPPOSITE ENDS OF SAID CASING AXIALLY OUTWARDLY OF SAID
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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) | 1968-12-27 | 1969-06-28 | 1969-12-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-27 | 1973-06-28 | 1973-12-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-27 | 1977-06-28 | 1977-12-28 | $7700.00 | Window Closed / Lapsed |