US3674196A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Centrifugal mixing and extraction apparatus
Assignee: Deutsche Gesellschaft fuer Wiederaufarbeitung von Kernbrennstoffen mbH
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Filing: 1970-02-03
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Granted: 1972-07-04
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Expires: 1990-02-03
Abstract
Abstract A centrifugal mixing and extraction device, suitable particularly for mixing and extracting radioactive fluids, is designed for rapid cleaning and/or replacement of the mixing chamber and separation bowl. The entire unit, including motor, drive shaft, separator bowl, mixing chamber and impeller, is literally hung from a frame in a casing enclosing the bowl, mixing chamber and impeller. In operative position, the mixing chamber is restrained from rotation with the impeller, the bowl and the shaft by means of magnets in the lower portion of the chamber and the casing, by one or more studs fixed in one of the walls thereof and axially engageable with corresponding recesses in the other, or both. The entire unit can simply be lifted out of the casing, e.g., by disengaging the magnets, without interrupting the extraction process.
Inventors
- 👤 Heinrich Gutter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 02:22
CPC Classifications
G; G21; G21F; G21F9/00; G21F9/04; G21F9/06; G21F9/12; G21F9/125; B; B01; B01D; B01D11/00; B01D11/04; B01D11/0446; B01D11/0457; B01F; B01F27/00; B01F27/80; B01F35/00; B01F35/40; B01F35/42; B01F2101/00; B01F2101/57
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
108 words
Centrifugal mixing and extraction apparatus comprising a casing, an encapsulated mixing chamber seated in a lower portion thereof, an impeller rotatable within the mixing chamber, a rotatable bowl above and in communication with said mixing chamber, a drive shaft for rotating said impeller and said bowl within the caSing, a motor for driving the shaft, means for removably supporting said motor and drive shaft in a frame, and means selectively restraining the mixing chamber against rotation within the casing, said means further allowing the release of the mixing chamber from said casing for withdrawal of the mixing chamber, impeller, bowl, drive shaft, and motor together from said frame.
Claim 2
Dependent Claim
108 words
Centrifugal mixing and extraction apparatus comprising a casing, an encapsulated mixing chamber seated in a lower portion thereof, an impeller rotatable within the mixing chamber, a rotatable bowl above and in communication with said mixing chamber, a drive shaft for rotating said impeller and said bowl within the caSing, a motor for driving the shaft, means for removably supporting said motor and drive shaft in a frame, and means selectively restraining the mixing chamber against rotation within the casing, said means further allowing the release of the mixing chamber from said casing for withdrawal of the mixing chamber, impeller, bowl, drive shaft, and motor together from said frame.
Claim 3
Dependent Claim
13 words
Apparatus defined in claim 1 wherein the releasing and restraining means are magnetic.
Claim 4
Dependent Claim
31 words
Apparatus as defined in claim 1 wherein the releasing and restraining means comprise a vertical stud fixed to a lower wall of the mixing chamber for mating engagement with the casing.
Claim 5
Dependent Claim
41 words
Apparatus defined in claim 1 wherein the releasing and restraining means comprise oppositely disposed magnets in a lower wall of the mixing chamber and the casing and a vertical stud fixed to said lower wall and axially engageable with the casing.
Claim 6
Dependent Claim
30 words
Apparatus defined in claim 1 wherein the releasing and restraining means comprise a vertical stud fixed to the casing for mating engagement with a lower wall of the mixing chamber.
Claim 7
Dependent Claim
41 words
Apparatus defined in claim 1 wherein the releasing and restraining means comprise oppositely disposed magnets in a lower wall of the mixing chamber and the casing and a vertical stud fixed to the casing and axially engageable with said lower wall.
References Cited (Backward Citations)
US2881974A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-07-04 | 1976-01-03 | 1976-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-07-04 | 1980-01-03 | 1980-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-07-04 | 1984-01-03 | 1984-07-04 | $7700.00 | Window Closed / Lapsed |