Patent US3225236A successfully refreshed from Google Patents.
US3225236A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Propulsion arrangement
Assignee: Northrop Grumman Space and Mission Systems Corp
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Filing: 1961-01-03
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Granted: 1965-12-21
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Expires: 1981-01-03
Abstract
No abstract record available.
Inventors
- 👤 Rudolf X Meyer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 11:07
CPC Classifications
H; H05; H05H; H05H1/00; H05H1/54; B; B64; B64G; B64G1/00; B64G1/22; B64G1/40; B64G1/411; B64G1/413; F; F03; F03H; F03H1/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
195 words
A PLASMA PUMP COMPRISING: A CONDUIT HAVING ONE END ARRANGED TO RECEIVE A PLASMA FLOWING AT A RELATIVELY LOW INITIAL VELOCITY AND BEING ARRANGED TO EXHAUST THE PLASMA AT ITS OTHER END; A POLYPHASE POWER SOURCE; A FIRST PLURALITY OF WINDINGS ALONG SAID CONDUIT ADJACENT TO THE ONE END, ARRANGED TO BE ENERGIZED BY SAID POWER SOURCE TO DEVELOP A MAGNETIC FIELD ALONG SAID CONDUIT, WHICH MAGNETIC FIELD MOVES PARALLEL TO THE MOTION OF SAID PLASMA AND AT A PHASE VELOCITY GREATER THAN THE INITIAL VELOCITY WHEREBY CURRENTS ARE INDUCED IN SAID PLASMA AND A MAGNETIC COUPLING BETWEEN SAID PLASMA AND THE MOVING MAGNETIC FIELD WILL THRUST SAID PLASMA THROUGH THE CONDUIT AT A SECOND VELOCITY GREATER THAN THE INITIAL VELOCITY; A FREQUENCY MULTIPLIER COUPLED TO BE ENERGIZED BY SAID POWER SOURCE TO PROVIDE A HIGHER FREQUENCY POWER OUTPUT; AND A SECOND PLURALITY OF WINDINGS ALONG SAID CONDUIT ADJACENT TO THE OTHER END ARRANGED TO BE ENERGIZED BY SAID HIGHER FREQUENCY POWER OUTPUT TO DEVELOP A MAGNETIC FIELD ALONG SAID CONDUIT WHICH MOVES PARALLEL TO THE MOTION OF SAID PLASMA AND AT A PHASE VELOCITY GREATER THAN THE SECOND VELOCITY TO ACCELERATE FURTHER SAID PLASMA.
Claim 2
Dependent Claim
195 words
A PLASMA PUMP COMPRISING: A CONDUIT HAVING ONE END ARRANGED TO RECEIVE A PLASMA FLOWING AT A RELATIVELY LOW INITIAL VELOCITY AND BEING ARRANGED TO EXHAUST THE PLASMA AT ITS OTHER END; A POLYPHASE POWER SOURCE; A FIRST PLURALITY OF WINDINGS ALONG SAID CONDUIT ADJACENT TO THE ONE END, ARRANGED TO BE ENERGIZED BY SAID POWER SOURCE TO DEVELOP A MAGNETIC FIELD ALONG SAID CONDUIT, WHICH MAGNETIC FIELD MOVES PARALLEL TO THE MOTION OF SAID PLASMA AND AT A PHASE VELOCITY GREATER THAN THE INITIAL VELOCITY WHEREBY CURRENTS ARE INDUCED IN SAID PLASMA AND A MAGNETIC COUPLING BETWEEN SAID PLASMA AND THE MOVING MAGNETIC FIELD WILL THRUST SAID PLASMA THROUGH THE CONDUIT AT A SECOND VELOCITY GREATER THAN THE INITIAL VELOCITY; A FREQUENCY MULTIPLIER COUPLED TO BE ENERGIZED BY SAID POWER SOURCE TO PROVIDE A HIGHER FREQUENCY POWER OUTPUT; AND A SECOND PLURALITY OF WINDINGS ALONG SAID CONDUIT ADJACENT TO THE OTHER END ARRANGED TO BE ENERGIZED BY SAID HIGHER FREQUENCY POWER OUTPUT TO DEVELOP A MAGNETIC FIELD ALONG SAID CONDUIT WHICH MOVES PARALLEL TO THE MOTION OF SAID PLASMA AND AT A PHASE VELOCITY GREATER THAN THE SECOND VELOCITY TO ACCELERATE FURTHER SAID PLASMA.
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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) | 1968-12-20 | 1969-06-21 | 1969-12-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-20 | 1973-06-21 | 1973-12-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-20 | 1977-06-21 | 1977-12-21 | $7700.00 | Window Closed / Lapsed |