US3215869A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Plasma jet engine
Assignee: Thermo Fisher Scientific Inc
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Filing: 1959-12-31
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Granted: 1965-11-02
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Expires: 1979-12-31
Abstract
No abstract record available.
Inventors
- 👤 George N Hatsopoulos
- 👤 Eustratios N Carabateas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 17:49
CPC Classifications
H; H02; H02N; H02N3/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
269 words
A PROCESS FOR PRODUCING ELECTRICAL ENERGY FROM THE ENERGY OF A FLOWING PLASMA COMPRISING: EXPANDING A MOVING FLUID INTO AN EXPANSION CHAMBER AHVING AN APPRECIABLE EXTENT IN A DIRECTION ALONG HE PATH OF FLOW OF SAID FLUID AND HAVING AN ELECTRON EMISSIVE CATHODE PROVIDED WITH MAGNETIC SHIELDING, AT LEAST THE OUTER SURFACE OF WHICH SHIELDING DEFINING A PORTION OF THE PATH OF FLOW OF SAID MOVING FLUID ON SAID EXPANSION CHAMBER IS CONSTITUTED OF A FERROMAGNETIC MATERIAL HAVING A RELATIVE PERMEABILITY IN EXCESS OF 5,000 GAUSS/ORESTED AND A CURIE POINT GREATER THAN 1200*K., AND AN ELECTRON RECEPITVE ANODE CONSTITUTED OF FERROMAGNETIC MATERIAL SPACED FROM THE MAGNETICALLY SHIELDED CATHODE ACROSS THE PATH OF FLOW OF SAID MOVING FLUID IN SAID EXPANSION CHAMBER BETWEEN SAID MAGNETICALLY SHIELDED CATHODE AND SAID ANODE; IONIZING SAID MOVING FLUID TO PRODUCE A PLASMA WITHIN SAID EXPANSION CHAMBER HAVING A RANDOM ION CURRENT THEREIN; HEATING SAID CATHODE TO EFFECT ELECTRON EMISSION THEREFROM, THEREBY PRODUCING AN ELECTRON CURRENT FROM SAID CATHODE THROUGH SAID PLASMA TO SAID ANODE; CREATING A MAGNETIC FIELD WITHIN SAID EXPANSION CHAMBER HAVING AN APPRECIABLE EXTENT ALONG THE PATH OF FLOW OF SAID PLASMA AND THE FLUX LINES OF SAID FIELD, IN THE REGIONS ADJACENT SAID CATHODE AND SAID ANODE, EXTENDING TOWARD SAID CATHODE AND SAID ANODE WITH THE FLUX LINES NEAREST THERETO EXTENDING SUBSTANTIALLY AT RIGHT ANGLES TO, AND INTO, THE MAGNETIC SHIELDING ON SAID CATHODE AND THE SURFACE OF SAID ANODE TO DEFLECT THE IONS WITHIN SAID PLASMA TOWARD SAID MAGNETIC SHEIDLING ON SAID CATHODE AND SAID ANODE AND THUS MINIMIZE INTERFERENCE BETWEEN SAID MAGNETIC FIELD AND THE FLOW OF SAID CURRENTS.
Claim 2
Dependent Claim
269 words
A PROCESS FOR PRODUCING ELECTRICAL ENERGY FROM THE ENERGY OF A FLOWING PLASMA COMPRISING: EXPANDING A MOVING FLUID INTO AN EXPANSION CHAMBER AHVING AN APPRECIABLE EXTENT IN A DIRECTION ALONG HE PATH OF FLOW OF SAID FLUID AND HAVING AN ELECTRON EMISSIVE CATHODE PROVIDED WITH MAGNETIC SHIELDING, AT LEAST THE OUTER SURFACE OF WHICH SHIELDING DEFINING A PORTION OF THE PATH OF FLOW OF SAID MOVING FLUID ON SAID EXPANSION CHAMBER IS CONSTITUTED OF A FERROMAGNETIC MATERIAL HAVING A RELATIVE PERMEABILITY IN EXCESS OF 5,000 GAUSS/ORESTED AND A CURIE POINT GREATER THAN 1200*K., AND AN ELECTRON RECEPITVE ANODE CONSTITUTED OF FERROMAGNETIC MATERIAL SPACED FROM THE MAGNETICALLY SHIELDED CATHODE ACROSS THE PATH OF FLOW OF SAID MOVING FLUID IN SAID EXPANSION CHAMBER BETWEEN SAID MAGNETICALLY SHIELDED CATHODE AND SAID ANODE; IONIZING SAID MOVING FLUID TO PRODUCE A PLASMA WITHIN SAID EXPANSION CHAMBER HAVING A RANDOM ION CURRENT THEREIN; HEATING SAID CATHODE TO EFFECT ELECTRON EMISSION THEREFROM, THEREBY PRODUCING AN ELECTRON CURRENT FROM SAID CATHODE THROUGH SAID PLASMA TO SAID ANODE; CREATING A MAGNETIC FIELD WITHIN SAID EXPANSION CHAMBER HAVING AN APPRECIABLE EXTENT ALONG THE PATH OF FLOW OF SAID PLASMA AND THE FLUX LINES OF SAID FIELD, IN THE REGIONS ADJACENT SAID CATHODE AND SAID ANODE, EXTENDING TOWARD SAID CATHODE AND SAID ANODE WITH THE FLUX LINES NEAREST THERETO EXTENDING SUBSTANTIALLY AT RIGHT ANGLES TO, AND INTO, THE MAGNETIC SHIELDING ON SAID CATHODE AND THE SURFACE OF SAID ANODE TO DEFLECT THE IONS WITHIN SAID PLASMA TOWARD SAID MAGNETIC SHEIDLING ON SAID CATHODE AND SAID ANODE AND THUS MINIMIZE INTERFERENCE BETWEEN SAID MAGNETIC FIELD AND THE FLOW OF SAID CURRENTS.
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) | 1968-11-01 | 1969-05-03 | 1969-11-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-01 | 1973-05-03 | 1973-11-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-01 | 1977-05-03 | 1977-11-02 | $7700.00 | Window Closed / Lapsed |