Patent US4285701A successfully refreshed from Google Patents.
US4285701A
Expired / Lapsed
US
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Method for separating isotopes using a vortex tube
Assignee: Individual
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Filing: 1978-06-05
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Granted: 1981-08-25
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Expires: 1998-06-05
Abstract
Abstract The present invention utilizes a vortex tube for separating isotopes. A gas mixture containing the isotopic molecules, with or without a carrier gas, enters the vortex tube under pressure and is separated into a hot discharge flow stream and a cold discharge flow stream. The hot discharge is enriched in lighter isotopic molecules whereas the cold discharge flow stream is enriched in the heavier isotopic molecules. The vortex tube can be used in a single stage or multistage isotope separation apparatus. An electromagnetic beam may be used in conjunction with one or more vortex tubes to selectively and simultaneously excite the vibrational mode of other than the major isotopic components.
Inventors
- 👤 Ralph F. Schlenker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 03:46
CPC Classifications
B; B01; B01D; B01D59/00; B01D59/20; B01D59/50; F; F25; F25B; F25B9/00; F25B9/02; F25B9/04
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
197 words
A method for separating heavier from light isotopes, comprising: introducing a gaseous feedstock mixture containing relatively light and relatively heavy isotopes under sufficient pressure and temperature into an elongated cylindrical vortex tube in a circumferential fashion so as to impart a swirling action of said mixture within said tube around the longitudinal axis thereof which tends to separate said mixture into a warmer outer stream enriched in lighter isotopes and a cooler inner stream enriched in heavier isotopes; enhancing said thermodynamic separation by axially directing an electromagnetic beam along one stream to excite the vibrational mode of the minority isotope in one stream exclusive of the other ones in said one stream; converting the electromagnetically caused excitation of the minority isotope remaining in said one stream to thermal translation causing a further migration of the minority isotope into the other stream; drawing off said outer stream of said thermodynamically separated swirling mixture adjacent the cylindrical walls of said tube through an outer opening spaced radially outwardly from the longitudinal axis of said tube; drawings off the inner stream of said thermodynamically separated swirling mixture through an axial outlet located approximately along the longitudinal axis of said tube.
Claim 2
Independent Claim
197 words
A method for separating heavier from light isotopes, comprising: introducing a gaseous feedstock mixture containing relatively light and relatively heavy isotopes under sufficient pressure and temperature into an elongated cylindrical vortex tube in a circumferential fashion so as to impart a swirling action of said mixture within said tube around the longitudinal axis thereof which tends to separate said mixture into a warmer outer stream enriched in lighter isotopes and a cooler inner stream enriched in heavier isotopes; enhancing said thermodynamic separation by axially directing an electromagnetic beam along one stream to excite the vibrational mode of the minority isotope in one stream exclusive of the other ones in said one stream; converting the electromagnetically caused excitation of the minority isotope remaining in said one stream to thermal translation causing a further migration of the minority isotope into the other stream; drawing off said outer stream of said thermodynamically separated swirling mixture adjacent the cylindrical walls of said tube through an outer opening spaced radially outwardly from the longitudinal axis of said tube; drawings off the inner stream of said thermodynamically separated swirling mixture through an axial outlet located approximately along the longitudinal axis of said tube.
Claim 3
Independent Claim
184 words
A method for separating heavier from light isotopes, comprising: introducing a gaseous feedstock mixture containing relatively light and relatively heavy isotopes under sufficient pressure and temperature into an elongated cylindrical vortex tube in a circumferential fashion so as to impart a swirling action of said mixture within said tube around the longitudinal axis thereof which tends to separate said mixture into a warmer outer stream enriched in lighter isotopes and a cooler inner stream enriched in heavier isotopes; enhancing said thermodynamic separation by electromagnetically exciting the vibrational mode of lighter isotopes remaining in inner stream exclusive of the heavier ones; converting the electromagnetic excitation of the lighter isotopes remaining in the inner stream to thermal translation causing a further migration of the lighter isotopes into the outer stream; drawing off said outer stream of said thermodynamically separated swirling mixture adjacent the cylindrical walls of said tube through an outer opening spaced radially outwardly from the longitudinal axis of said tube; drawing off the inner stream of said thermodynamically separated swirling mixture through an axial outlet located approximately along the longitudinal axis of said tube.
Claim 4
Independent Claim
184 words
A method for separating heavier from light isotopes, comprising: introducing a gaseous feedstock mixture containing relatively light and relatively heavy isotopes under sufficient pressure and temperature into an elongated cylindrical vortex tube in a circumferential fashion so as to impart a swirling action of said mixture within said tube around the longitudinal axis thereof which tends to separate said mixture into a warmer outer stream enriched in lighter isotopes and a cooler inner stream enriched in heavier isotopes; enhancing said thermodynamic separation by electromagnetically exciting the vibrational mode of lighter isotopes remaining in inner stream exclusive of the heavier ones; converting the electromagnetic excitation of the lighter isotopes remaining in the inner stream to thermal translation causing a further migration of the lighter isotopes into the outer stream; drawing off said outer stream of said thermodynamically separated swirling mixture adjacent the cylindrical walls of said tube through an outer opening spaced radially outwardly from the longitudinal axis of said tube; drawing off the inner stream of said thermodynamically separated swirling mixture through an axial outlet located approximately along the longitudinal axis of said tube.
Claim 5
Dependent Claim
39 words
A method according to claim 2 where said electromagnetically exciting step comprises directing an electromagnetic beam solely substantially along the axis of the vortex tube and tuning the beam to solely excite the vibrational mode of said lighter isotopes.
Claim 6
Dependent Claim
22 words
A method according to claim 3 wherein the wave length of the beam is within the range of 0.1 to 20 micrometers.
Claim 7
Dependent Claim
14 words
A method according to claim 3 wherein the beam is a continuous wave type.
Claim 8
Dependent Claim
11 words
A method according to claim 3 wherein the beam is pulsed.
Claim 9
Dependent Claim
27 words
A method according to claim 3 wherein the unfocused power of the beam is a range of greater than zero up to 25 watts per square centimeter.
Claim 10
Dependent Claim
26 words
A method according to claim 3 wherein the beam is caused to pass through materials within the vortex tube which are essentially transparent to the beam.
Claim 11
Dependent Claim
26 words
A method according to claim 3 further comprising the step of cooling at least part of the vortex tube during excitation to remove excess heat generated.
Claim 12
Independent Claim
207 words
A method for separating heavier from lighter isotopes, comprising: introducing a gaseous feedstock mixture containing relatively light and relatively heavy isotopes under sufficient pressure and temperature, into a plurality of axially aligned elongated cylindrical vortex tubes, each in a circumferential fashion so as to impart a swirling action of said mixture within each said tube around the longitudinal axis thereof which separates said mixture into a warmer outer stream enriched in lighter isotopes and a cooler inner stream enriched in heavier isotopes; enhancing said thermodynamic separation by electromagnetically exciting from a common source the vibrational mode of the lighter isotopes within the inner stream of each vortex tube exclusive of the heavier ones; converting the electromagnetic excitation of the lighter isotopes remaining in the inner stream of each vortex tube to thermal translation causing a further migration of the lighter isotopes into the outer stream; drawing off in each tube said outer stream of said thermodynamically separated swirling mixture adjacent the cylindrical walls of said tube through an outer opening spaced radially outwardly from the longitudinal axis of said tube; drawing off in each tube the inner stream of said thermodynamically separated swirling mixture through an axial outlet location approximately along the longitudinal axis of the tube.
Claim 13
Independent Claim
207 words
A method for separating heavier from lighter isotopes, comprising: introducing a gaseous feedstock mixture containing relatively light and relatively heavy isotopes under sufficient pressure and temperature, into a plurality of axially aligned elongated cylindrical vortex tubes, each in a circumferential fashion so as to impart a swirling action of said mixture within each said tube around the longitudinal axis thereof which separates said mixture into a warmer outer stream enriched in lighter isotopes and a cooler inner stream enriched in heavier isotopes; enhancing said thermodynamic separation by electromagnetically exciting from a common source the vibrational mode of the lighter isotopes within the inner stream of each vortex tube exclusive of the heavier ones; converting the electromagnetic excitation of the lighter isotopes remaining in the inner stream of each vortex tube to thermal translation causing a further migration of the lighter isotopes into the outer stream; drawing off in each tube said outer stream of said thermodynamically separated swirling mixture adjacent the cylindrical walls of said tube through an outer opening spaced radially outwardly from the longitudinal axis of said tube; drawing off in each tube the inner stream of said thermodynamically separated swirling mixture through an axial outlet location approximately along the longitudinal axis of the tube.
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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) | 1984-08-24 | 1985-02-23 | 1985-08-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-08-24 | 1989-02-23 | 1989-08-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-08-24 | 1993-02-23 | 1993-08-25 | $7700.00 | Window Closed / Lapsed |