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US3133500A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ion drag pumps
Assignee: Northrop Grumman Guidance and Electronics Co Inc
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Filing: 1962-05-15
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Granted: 1964-05-19
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Expires: 1982-05-15
Abstract
No abstract record available.
Inventors
- 👤 Benz Emil
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:09
CPC Classifications
H; H01; H01J; H01J41/00; H01J41/12; H01J41/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
149 words
AN ION DRAG PUMP FOR PUMPING AN INSULATING LIQUID COMPRISING A CONDUCTIVE INNER CONDUIT AND AN OUTER CONDUIT DEFINING A FLOW PATH FOR SAID LIQUID, SAID CONDUITS BEING CONCENTRICALLY ARRANGED WITH SAID INNER CONDUIT EXTENDING INTO SAID OUTER CONDUIT, THE END OF SAID INNER CONDUIT INSIDE SAID OUTER CONDUIT BEING CLOSED AND THE END OF SAID OUTER CONDUIT THROUGH WHICH SAID INNER CONDUIT EXTENDS BEING CLOSED ABOUT SAID INNER CONDUIT, SAID INNER CONDUIT HAVING A PLURALITY OF APERTURES RADIALLY ARRANGED IN A PLANE NORMAL TO THE AXIS OF SAID CONDUITS, AN EQUAL PLURALITY OF CORONA DISCHARGE POINTS EXTENDING INWARDLY THROUGH SAID OUTER CONDUIT AND RADIALLY ARRANGED IN SAID PLANE WITH A CORONA POINT SUBSTANTIALLY OPPOSITE EACH SAID APERTURE, AND MEANS CONNECTED BETWEEN SAID INNER CONDUIT AND SAID CORONA DISCHARGE POINTS FOR ESTABLISHING IONIZATION AND HIGH FIELD STRENGTH IN SAID INSULATING LIQUID BETWEEN SAID CONORA POINTS AND SAID INNER CONDUIT.
Claim 2
Dependent Claim
149 words
AN ION DRAG PUMP FOR PUMPING AN INSULATING LIQUID COMPRISING A CONDUCTIVE INNER CONDUIT AND AN OUTER CONDUIT DEFINING A FLOW PATH FOR SAID LIQUID, SAID CONDUITS BEING CONCENTRICALLY ARRANGED WITH SAID INNER CONDUIT EXTENDING INTO SAID OUTER CONDUIT, THE END OF SAID INNER CONDUIT INSIDE SAID OUTER CONDUIT BEING CLOSED AND THE END OF SAID OUTER CONDUIT THROUGH WHICH SAID INNER CONDUIT EXTENDS BEING CLOSED ABOUT SAID INNER CONDUIT, SAID INNER CONDUIT HAVING A PLURALITY OF APERTURES RADIALLY ARRANGED IN A PLANE NORMAL TO THE AXIS OF SAID CONDUITS, AN EQUAL PLURALITY OF CORONA DISCHARGE POINTS EXTENDING INWARDLY THROUGH SAID OUTER CONDUIT AND RADIALLY ARRANGED IN SAID PLANE WITH A CORONA POINT SUBSTANTIALLY OPPOSITE EACH SAID APERTURE, AND MEANS CONNECTED BETWEEN SAID INNER CONDUIT AND SAID CORONA DISCHARGE POINTS FOR ESTABLISHING IONIZATION AND HIGH FIELD STRENGTH IN SAID INSULATING LIQUID BETWEEN SAID CONORA POINTS AND SAID INNER CONDUIT.
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) | 1967-05-19 | 1967-11-18 | 1968-05-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-05-19 | 1971-11-18 | 1972-05-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-05-19 | 1975-11-18 | 1976-05-19 | $7700.00 | Window Closed / Lapsed |