US3243954A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Plasma accelerator using hall currents
Assignee: Electro Optical Systems Inc
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Filing: 1962-08-17
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Granted: 1966-04-05
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Expires: 1982-08-17
Abstract
No abstract record available.
Inventors
- 👤 Gordon L Cann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 06:37
CPC Classifications
F; F03; F03H; F03H1/00; F03H1/0037; F03H1/0062; F03H1/0068; H; H05; H05H; H05H1/00; H05H1/54
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
184 words
A PLASMA ACCELERATOR COMPRISING, IN COMBINATION: (A) A CASING HAVING AN AXISYMMETRIC SUPERSONIC EXPANSION NOZZLE THEREIN EXTENDING LONGITUDINALLY BETWEEN A SONIC ORIFICE INLET AND A NOZZLE OUTLET, THE LONGITUDINAL AXIS OF SAID NOZZLE DEFINING A REFERENCE AXIS FOR THE ACCELERATOR; (B) MEANS FOR AT LEAST PARTIALLY IONIZING A GAS STREAM AND INJECTING THE RESULTING GAS PLASMA AXIALLY INTO THE SONIC ORIFICE INLET OF SAID NOZZLE; (C) MEANS FOR ESTABLISHING AN AXISYMMETRIC ELECTRIC DISCHARGE EXTENDING AXIALLY THROUGH SAID NOZZLE TO THEREBY ESTABLISH A PLASMA JET DEFINING AN AXIAL CURRENT FLOW THROUGH SAID NOZZLE; AND (D) MEANS FOR ESTABLISHING A MAGNETIC FIELD WITHIN AT LEAST A PREDETERMINED LONGITUDINAL PORTION OF SAID NOZZLE, SAID MAGNETIC FIELD BING AXISYMMETIC WITH RESPECT TO SAID REFERENCE AXIS AND STRONGLY FRINGING INTERMEDIATE SAID SONIC ORIFICE INLET AND SAID NOZZLE OUTLET SO THAT THE TOTAL RADIAL COMPONENTS OF THE MAGNETIC LINES OF FORCE OF SAID MAGNETIC FIELD GREATLY PREDOMINATE OVER THE AXIAL COMPONENTS OF THE MAGNETIC LINES OF FORCE OF SAID MAGNETIC FIELD AND CROSS THE CURRENT DENSITY LINES OF THE AXIAL CURRENT FLOW OF SAID PLASMA JET THROUGH SAID ACCELERATOR CHANNEL.
Claim 2
Dependent Claim
184 words
A PLASMA ACCELERATOR COMPRISING, IN COMBINATION: (A) A CASING HAVING AN AXISYMMETRIC SUPERSONIC EXPANSION NOZZLE THEREIN EXTENDING LONGITUDINALLY BETWEEN A SONIC ORIFICE INLET AND A NOZZLE OUTLET, THE LONGITUDINAL AXIS OF SAID NOZZLE DEFINING A REFERENCE AXIS FOR THE ACCELERATOR; (B) MEANS FOR AT LEAST PARTIALLY IONIZING A GAS STREAM AND INJECTING THE RESULTING GAS PLASMA AXIALLY INTO THE SONIC ORIFICE INLET OF SAID NOZZLE; (C) MEANS FOR ESTABLISHING AN AXISYMMETRIC ELECTRIC DISCHARGE EXTENDING AXIALLY THROUGH SAID NOZZLE TO THEREBY ESTABLISH A PLASMA JET DEFINING AN AXIAL CURRENT FLOW THROUGH SAID NOZZLE; AND (D) MEANS FOR ESTABLISHING A MAGNETIC FIELD WITHIN AT LEAST A PREDETERMINED LONGITUDINAL PORTION OF SAID NOZZLE, SAID MAGNETIC FIELD BING AXISYMMETIC WITH RESPECT TO SAID REFERENCE AXIS AND STRONGLY FRINGING INTERMEDIATE SAID SONIC ORIFICE INLET AND SAID NOZZLE OUTLET SO THAT THE TOTAL RADIAL COMPONENTS OF THE MAGNETIC LINES OF FORCE OF SAID MAGNETIC FIELD GREATLY PREDOMINATE OVER THE AXIAL COMPONENTS OF THE MAGNETIC LINES OF FORCE OF SAID MAGNETIC FIELD AND CROSS THE CURRENT DENSITY LINES OF THE AXIAL CURRENT FLOW OF SAID PLASMA JET THROUGH SAID ACCELERATOR CHANNEL.
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) | 1969-04-04 | 1969-10-04 | 1970-04-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-04 | 1973-10-04 | 1974-04-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-04 | 1977-10-04 | 1978-04-05 | $7700.00 | Window Closed / Lapsed |