US4357303A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for refluorinating uranium pentafluoride precipitate
Assignee: Boeing North American Inc
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Filing: 1980-03-31
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Granted: 1982-11-02
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Expires: 2000-03-31
Abstract
Abstract A positive-displacement compressor receives a gaseous mixture of fluorine and uranium pentafluoride particles. The mixture is compressed by the compressor to cause the fluorine in the gas to react with the uranium pentafluoride to form uranium hexafluoride. The compressed mixture in the compressor is removed by a stream of warm fluorine gas to scavenge the excess particulate matter from the compressor and enhance the refluoridation process.
Inventors
- 👤 Donald R. Hodson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 09:34
CPC Classifications
B; B01; B01J; B01J8/00; B01J8/08; B01J3/00; B01J3/06; B01J3/08; B01J8/0005; C; C01; C01G; C01G43/00; C01G43/04; C01G43/06; C01G43/063; C01G43/066
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
148 words
Apparatus for converting uranium pentafluoride in particulate form to gaseous uranium hexafluoride, comprising: means for providing uranium pentafluoride particles; means for receiving, mixing and suspending said particles in a gas containing fluorine, said particles received from said providing means; a piston-displacement compressor having: a cylinder; a reciprocating piston; a first inlet to said cylinder through which said particulate uranium pentafluoride and said fluorine are charged into said cylinder; a second inlet to said cylinder, through which a gaseous fluorine purge gas is directed; means connecting a source of purge gas to said second inlet; an outlet; for eliminating said gaseous uranium hexafluoride and unreacted uranium pentafluoride and said fluorine; valve means on said second inlet and said outlet; and means opening said valves when said gas and particulate mixture in said cylinder is substantially fully compressed by said piston to purge the compressed mixture out of said cylinder.
Claim 2
Dependent Claim
148 words
Apparatus for converting uranium pentafluoride in particulate form to gaseous uranium hexafluoride, comprising: means for providing uranium pentafluoride particles; means for receiving, mixing and suspending said particles in a gas containing fluorine, said particles received from said providing means; a piston-displacement compressor having: a cylinder; a reciprocating piston; a first inlet to said cylinder through which said particulate uranium pentafluoride and said fluorine are charged into said cylinder; a second inlet to said cylinder, through which a gaseous fluorine purge gas is directed; means connecting a source of purge gas to said second inlet; an outlet; for eliminating said gaseous uranium hexafluoride and unreacted uranium pentafluoride and said fluorine; valve means on said second inlet and said outlet; and means opening said valves when said gas and particulate mixture in said cylinder is substantially fully compressed by said piston to purge the compressed mixture out of said cylinder.
Claim 3
Dependent Claim
28 words
Apparatus of claim 1 wherein said piston permits the mixed gas and particle flow through said first inlet only when said piston is in a substantially non-compressed position.
References Cited (Backward Citations)
US1230654A
Cited
US2881102A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-11-01 | 1986-05-03 | 1986-11-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-11-01 | 1990-05-03 | 1990-11-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-11-01 | 1994-05-03 | 1994-11-02 | $7700.00 | Window Closed / Lapsed |