US3363124A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus including secondary emission means for neutralizing an ion beam
Assignee: ROBERT JEAN WARNECKE JR
•
Filing: 1964-04-15
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Granted: 1968-01-09
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Expires: 1984-04-15
Abstract
No abstract record available.
Inventors
- 👤 Bensussan Andre
- 👤 Vincent Germaine
- 👤 Jr Robert-Jean Warnecke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 04:13
CPC Classifications
F; F03; F03H; F03H1/00; F03H1/0006; F03H1/0025; B; B64; B64G; B64G1/00; B64G1/22; B64G1/40; B64G1/411; B64G1/413; H; H01; H01J; H01J27/00; H01J27/02; H01J27/022; H01J27/024; H01J43/00; H01J43/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
112 words
IN A PROPULSION ENGINE UTILIZING THE EJECTIION OF AN ION BEAM, IN COMBINATION, COMPRISING: ION SOURCE MEANS, MEANS FOR EXTRACTING FROM SAID SOURCE MEANS A DIVERGING ION BEAM, MEANS FOR CAUSING THE DIVERGING ION BEAM TO CONVERGE THEREBY TO OBTAIN A CROSS-OVER POINT BEYOUND WHICH THE BEAM RE-DIVERGES, MEANS FORMING A SURFACE OF SECONDARY ELECTRON EMISSIVE MATERIAL, AND MEANS FOR BOMBARDING SAID SURFACE MEANS BY A PORTION OF SAID RE-DIVERGING ION BEAM THEREBY CAUSING THE EMISSION OF SECONDARY ELECTRONS FROM SAID SURFACE, SAID SURFACE MEANS BEING SO POSITIONED WITH RESPECT TO SAID ION BEAM THAT THE ELECTRONS, DURING MOVEMENT THEREOF, MIX WITH SAID ION BEAM THEREBY SUBSTANTIALLY NEUTRALIZING THE ELECTRIC CHARGE THEREOF.
Claim 2
Dependent Claim
112 words
IN A PROPULSION ENGINE UTILIZING THE EJECTIION OF AN ION BEAM, IN COMBINATION, COMPRISING: ION SOURCE MEANS, MEANS FOR EXTRACTING FROM SAID SOURCE MEANS A DIVERGING ION BEAM, MEANS FOR CAUSING THE DIVERGING ION BEAM TO CONVERGE THEREBY TO OBTAIN A CROSS-OVER POINT BEYOUND WHICH THE BEAM RE-DIVERGES, MEANS FORMING A SURFACE OF SECONDARY ELECTRON EMISSIVE MATERIAL, AND MEANS FOR BOMBARDING SAID SURFACE MEANS BY A PORTION OF SAID RE-DIVERGING ION BEAM THEREBY CAUSING THE EMISSION OF SECONDARY ELECTRONS FROM SAID SURFACE, SAID SURFACE MEANS BEING SO POSITIONED WITH RESPECT TO SAID ION BEAM THAT THE ELECTRONS, DURING MOVEMENT THEREOF, MIX WITH SAID ION BEAM THEREBY SUBSTANTIALLY NEUTRALIZING THE ELECTRIC CHARGE THEREOF.
References Cited (Backward Citations)
US3014154A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-01-08 | 1971-07-10 | 1972-01-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-01-08 | 1975-07-10 | 1976-01-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-01-08 | 1979-07-10 | 1980-01-09 | $7700.00 | Window Closed / Lapsed |