US3378723A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fast wave transmission line coupled to a plasma
Assignee: RCA Corp
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Filing: 1964-01-02
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Granted: 1968-04-16
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Expires: 1984-01-02
Abstract
No abstract record available.
Inventors
- 👤 Louis S Napoli
- 👤 George A Swartz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 00:32
CPC Classifications
H; H01; H01J; H01J25/00; H01J25/005
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
94 words
MEANS FOR COUPLING A FAST WAVE TRANSMISSION LINE TO A PLASMA AT A GIVEN FREQUENCY, COMPRISING: (A) MEANS FOR PRODUCING A PLASMA IN A GIVEN REGION; (B) MEANS FOR COUPLING A FAST WAVE TRANSMISSION LINE TO THE PLASMA IN A FIRST PORTION OF SAID REGION TO EXCITE A FAST BACKWARD WAVE AT SAID FREQUENCY ON SAID PLASMA FOR PROPAGATION TO A SECOND PORTION OF SAID REGION; AND (C) MEANS FOR CHANGING THE PHASE VELOCITY OF SAID FAST BACKWARD WAVE DURING SAID PROPAGATION TO A DIFFERENT VALUE AT THE SOME FREQUENCY IN SAID SECOND PORTION.
Claim 2
Dependent Claim
94 words
MEANS FOR COUPLING A FAST WAVE TRANSMISSION LINE TO A PLASMA AT A GIVEN FREQUENCY, COMPRISING: (A) MEANS FOR PRODUCING A PLASMA IN A GIVEN REGION; (B) MEANS FOR COUPLING A FAST WAVE TRANSMISSION LINE TO THE PLASMA IN A FIRST PORTION OF SAID REGION TO EXCITE A FAST BACKWARD WAVE AT SAID FREQUENCY ON SAID PLASMA FOR PROPAGATION TO A SECOND PORTION OF SAID REGION; AND (C) MEANS FOR CHANGING THE PHASE VELOCITY OF SAID FAST BACKWARD WAVE DURING SAID PROPAGATION TO A DIFFERENT VALUE AT THE SOME FREQUENCY IN SAID SECOND PORTION.
Claim 3
Dependent Claim
174 words
A BEAM-PLASMA INTERACTION TUBE COMPRISING: (A) MEANS FOR PRODUCING A PLASMA IN A GIVEN REGION; (B) MEANS FOR COUPLING A FAST WAVE TRANSMISSION LINE TO THE PLASMA IN A FIRST PORTION OF SAID REGION TO EXCITE A FAST BACKWARD WAVE AT SAID FREQUENCY ON SAID PLASMA FOR PROPAGATION TO A SECOND PORTION OF SAID REGION; (C) MEANS FOR PROJECTING A STREAM OF ELECTRONS THROUGH SAID REGION IN A DIRECTION PARALLEL TO THE DIRECTION OF PROPAGATION OF SAID FAST BACKWARD WAVE; (D) MEANS FOR CHANGING THE PHASE VEOCITY OF SAID FAST BACKWARD WAVE DURING SAID PROPAGATION TO A LOWER VALUE AT THE SAME FREQUENCY IN SAID SECOND PORTION, FOR EXCITING A SLOW FORWARD WAVE OF SAID LOW PHASE VELOCITY AT SAID FREQUENCY ON SAID ELECTRON STREAM; (E) MEANS FOR DIRECTING SAID ELECTRON STREAM FROM SAID SECOND PORTION TO A THIRD PORTION OF SAID REGION, FOR INTERACTION WITH THE PLASMA THEREIN TO INCREASE THE AMPLITUDE OF SAID SLOW FORWARD WAVE; AND (F) MEANS FOR COUPLING SAID AMPLIFIED SLOW FORWARD WAVE TO A FAST WAVE TRANSMISSION LINE.
Claim 4
Dependent Claim
174 words
A BEAM-PLASMA INTERACTION TUBE COMPRISING: (A) MEANS FOR PRODUCING A PLASMA IN A GIVEN REGION; (B) MEANS FOR COUPLING A FAST WAVE TRANSMISSION LINE TO THE PLASMA IN A FIRST PORTION OF SAID REGION TO EXCITE A FAST BACKWARD WAVE AT SAID FREQUENCY ON SAID PLASMA FOR PROPAGATION TO A SECOND PORTION OF SAID REGION; (C) MEANS FOR PROJECTING A STREAM OF ELECTRONS THROUGH SAID REGION IN A DIRECTION PARALLEL TO THE DIRECTION OF PROPAGATION OF SAID FAST BACKWARD WAVE; (D) MEANS FOR CHANGING THE PHASE VEOCITY OF SAID FAST BACKWARD WAVE DURING SAID PROPAGATION TO A LOWER VALUE AT THE SAME FREQUENCY IN SAID SECOND PORTION, FOR EXCITING A SLOW FORWARD WAVE OF SAID LOW PHASE VELOCITY AT SAID FREQUENCY ON SAID ELECTRON STREAM; (E) MEANS FOR DIRECTING SAID ELECTRON STREAM FROM SAID SECOND PORTION TO A THIRD PORTION OF SAID REGION, FOR INTERACTION WITH THE PLASMA THEREIN TO INCREASE THE AMPLITUDE OF SAID SLOW FORWARD WAVE; AND (F) MEANS FOR COUPLING SAID AMPLIFIED SLOW FORWARD WAVE TO A FAST WAVE TRANSMISSION LINE.
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) | 1971-04-16 | 1971-10-16 | 1972-04-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-04-16 | 1975-10-16 | 1976-04-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-04-16 | 1979-10-16 | 1980-04-16 | $7700.00 | Window Closed / Lapsed |