US3168289A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Disc for centrifuge
Assignee: CORNELL MACHINE CO
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Filing: 1962-08-20
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Granted: 1965-02-02
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Expires: 1982-08-20
Abstract
No abstract record available.
Inventors
- 👤 George S Voses
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 00:04
CPC Classifications
B; B04; B04B; B04B11/00; B04B11/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
163 words
IN A CENTRIFUGE OF THE TYPE DESCRIBED, A CENTRIFUGAL DISC FOR OPERATION AT SELECTED SPEED COMPRISING A FLAT CENTER PORTION FOR ROTATION AT SAID SELECTED SPEED ABOUT AN AXIS, SAID DISC BEARING TRANSVERSE TO SAID AXIS, AN ANNULAR INTERMEDIATE PORTION CONNECTING WITH THE OUTER PERIPHERY OF SAID CENTER PORTION AND EXTENDING FORWARDLY OUTWARDLY THEREFROM AT A SHALLOW ACUTE ANGLE TO THE TRANSVERSE, AND AN ANNULAR OUTER PORTION CONNECTING WITH THE OUTER PERIPHERY OF SAID INTERMEDIATE PORTION AND EXTENDING FORWARDLY OUTWARDLY THEREFROM AT A LARGE ACUTE ANGLE TO THE TRANSVERSE, SAID CENTER AND INTERMEDIATE PORTIONS BEING ADAPTED TO FORM A FILM OF LIQUID MATERIAL IMPELLED UPON THE FRONT OF SAID CENTER PORTION BY ROTATION OF SAID DISC AT SAID SELECTED SPEED AND TO SUSTAIN SAID FILM TO THE OUTER PERIPHERY OF SAID OUTER PORTION, THE ANGLE OF SAID INTERMEDIATE PORTION BEING SUCH THAT THE COMPONENT OF CENTRIFUGAL FORCE ON THE LIQUID ALONG THE SURFACE OF SAID INTERMEDIATE PORTION IS MUCH GREATER THAN THE COMPONENT
Claim 2
Dependent Claim
163 words
IN A CENTRIFUGE OF THE TYPE DESCRIBED, A CENTRIFUGAL DISC FOR OPERATION AT SELECTED SPEED COMPRISING A FLAT CENTER PORTION FOR ROTATION AT SAID SELECTED SPEED ABOUT AN AXIS, SAID DISC BEARING TRANSVERSE TO SAID AXIS, AN ANNULAR INTERMEDIATE PORTION CONNECTING WITH THE OUTER PERIPHERY OF SAID CENTER PORTION AND EXTENDING FORWARDLY OUTWARDLY THEREFROM AT A SHALLOW ACUTE ANGLE TO THE TRANSVERSE, AND AN ANNULAR OUTER PORTION CONNECTING WITH THE OUTER PERIPHERY OF SAID INTERMEDIATE PORTION AND EXTENDING FORWARDLY OUTWARDLY THEREFROM AT A LARGE ACUTE ANGLE TO THE TRANSVERSE, SAID CENTER AND INTERMEDIATE PORTIONS BEING ADAPTED TO FORM A FILM OF LIQUID MATERIAL IMPELLED UPON THE FRONT OF SAID CENTER PORTION BY ROTATION OF SAID DISC AT SAID SELECTED SPEED AND TO SUSTAIN SAID FILM TO THE OUTER PERIPHERY OF SAID OUTER PORTION, THE ANGLE OF SAID INTERMEDIATE PORTION BEING SUCH THAT THE COMPONENT OF CENTRIFUGAL FORCE ON THE LIQUID ALONG THE SURFACE OF SAID INTERMEDIATE PORTION IS MUCH GREATER THAN THE COMPONENT
References Cited (Backward Citations)
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US2318293A
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US2612356A
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US2785765A
Cited
US2952448A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-02-02 | 1968-08-03 | 1969-02-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-02-02 | 1972-08-03 | 1973-02-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-02-02 | 1976-08-03 | 1977-02-02 | $7700.00 | Window Closed / Lapsed |