US2822126A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Continuous feed centrifuge
Assignee: Protein Foundation Inc
•
Filing: 1952-04-12
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Granted: 1958-02-04
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Expires: 1972-04-12
Abstract
No abstract record available.
Inventors
- 👤 Rebekah R Cohn
- 👤 Charles A Coolidge
- 👤 Seligman Eustace
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:44
CPC Classifications
B; B04; B04B; B04B5/00; B04B5/04; B04B5/0442
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
106 words
A CENTRIFUGE COMPRISING A CLOSED-TOP VESSEL HAVING IN BOTTOM WALL, A CENTRAL OPENING IN THE BOTTOM WALL FORMING AN OUTLET OF RESTRICTED AREA, AND SIDE WALLS CONNECTED TO SAID BOTTOM WALL AND HAVING CONICAL PORTIONS CONVERGING TOWARDS THE CLOSED TOP OF THE VESSEL, STATIONARY MEANS EXTENDING UPWARDLY THROUGH SAID OPENING TO A POINT NEAR THE TOP SAID VESSEL FOR FEEDING LIQUID INTO SAID VESSEL AND DISCHARGING THE LIWUID ADJACENT THE CENTRAL PORTION OF THE TOP WALL THEREOF AND MEANS DISPOSED BELOW SAID VESSEL FOR COLLECTING LIQUID DISCHARGED FROM SAID VESSEL THROUGH THE RESTRICTED BOTTOM OUTLET THEREOF, SAID VESSEL BEING ADAPTED FOR ROTATION ABOUT A VERTICAL AXIS.
Claim 2
Dependent Claim
106 words
A CENTRIFUGE COMPRISING A CLOSED-TOP VESSEL HAVING IN BOTTOM WALL, A CENTRAL OPENING IN THE BOTTOM WALL FORMING AN OUTLET OF RESTRICTED AREA, AND SIDE WALLS CONNECTED TO SAID BOTTOM WALL AND HAVING CONICAL PORTIONS CONVERGING TOWARDS THE CLOSED TOP OF THE VESSEL, STATIONARY MEANS EXTENDING UPWARDLY THROUGH SAID OPENING TO A POINT NEAR THE TOP SAID VESSEL FOR FEEDING LIQUID INTO SAID VESSEL AND DISCHARGING THE LIWUID ADJACENT THE CENTRAL PORTION OF THE TOP WALL THEREOF AND MEANS DISPOSED BELOW SAID VESSEL FOR COLLECTING LIQUID DISCHARGED FROM SAID VESSEL THROUGH THE RESTRICTED BOTTOM OUTLET THEREOF, SAID VESSEL BEING ADAPTED FOR ROTATION ABOUT A VERTICAL 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) | 1961-02-03 | 1961-08-05 | 1962-02-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-02-03 | 1965-08-05 | 1966-02-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-02-03 | 1969-08-05 | 1970-02-04 | $7700.00 | Window Closed / Lapsed |