US3304990A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Explosion proof centrifugal evaporator with magnetic drive
Assignee: University of Tennessee Research Foundation
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Filing: 1965-02-15
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Granted: 1967-02-21
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Expires: 1985-02-15
Abstract
No abstract record available.
Inventors
- 👤 Joseph A Ontko
- 👤 Richard F Jones
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 00:01
CPC Classifications
B; B01; B01D; B01D3/00; B01D3/08; B04; B04B; B04B15/00; B04B15/08; B04B5/00; B04B5/04; B04B5/0407; B04B5/0414; B04B9/00; G; G01; G01N; G01N1/00; G01N1/28; G01N1/40; G01N1/4022; G01N2001/4027; G01N35/00; G01N2035/00465; G01N2035/00495; Y; Y10; Y10S; Y10S159/00; Y10S159/07
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
80 words
A CENTRIFUGAL EVAPORATOR COMPRISING A HOUSING HAVING A MOTOR SUPPORTED THEREIN, MEANS AFFIXED TO THE SHAFT OF SAID MOTOR AND ADAPTED FOR ROTATION UPON ENERGIZATION OF SAID MOTOR, A PLURALITY OF PERMANENT MAGNETS CARRIED BY SAID MEANS, A VACUUM CHAMBER HAVING A BASE SUPPORTED ON SAID HOUSING, A CENTRIFUGE WITHIN SAID CHAMBER INCLUDING A SHAFT AND A RACK MOUNTED THEREON FOR SUPPORTING SAMPLES OF SOLUTIONS FROM WHICH THE SOLVENTS ARE TO BE EVAPORATED, A METAL DISC DISPOSED ON SAID SHAFT
Claim 2
Dependent Claim
80 words
A CENTRIFUGAL EVAPORATOR COMPRISING A HOUSING HAVING A MOTOR SUPPORTED THEREIN, MEANS AFFIXED TO THE SHAFT OF SAID MOTOR AND ADAPTED FOR ROTATION UPON ENERGIZATION OF SAID MOTOR, A PLURALITY OF PERMANENT MAGNETS CARRIED BY SAID MEANS, A VACUUM CHAMBER HAVING A BASE SUPPORTED ON SAID HOUSING, A CENTRIFUGE WITHIN SAID CHAMBER INCLUDING A SHAFT AND A RACK MOUNTED THEREON FOR SUPPORTING SAMPLES OF SOLUTIONS FROM WHICH THE SOLVENTS ARE TO BE EVAPORATED, A METAL DISC DISPOSED ON SAID SHAFT
References Cited (Backward Citations)
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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) | 1970-02-20 | 1970-08-22 | 1971-02-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-20 | 1974-08-22 | 1975-02-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-20 | 1978-08-22 | 1979-02-21 | $7700.00 | Window Closed / Lapsed |