Patent US3453491A successfully refreshed from Google Patents.
US3453491A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coupled cavity traveling-wave tube with improved voltage stability and gain vs. frequency characteristic
Assignee: Raytheon Co
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Filing: 1965-01-25
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Granted: 1969-07-01
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Expires: 1985-01-25
Abstract
No abstract record available.
Inventors
- 👤 Robert S Cerko
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 21:49
CPC Classifications
H; H01; H01J; H01J23/00; H01J23/16; H01J23/24; H01J23/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
123 words
A TRAVELING-WAVE TUBE COMPRISING: MEANS FOR PROVIDING A STREAM OF ELECTRONS ALONG A PREDETERMINED PATH, SLOW-WAVE STRUCTURE MEANS FOR PROPAGATING ELECTROMAGNETIC WAVE ENERGY IN SUCH MANNER THAT IT CAN INTERACT WITH SAID STREAM OF ELECTRONS, SAID SLOW-WAVE STRUCTURE MEANS DEFINING A PLURALITY OF INTERACTION CAVITIES DISPOSED SEQUENTIALLY ALONG AND IN ELECTROMAGNETIC INTERACTING RELATIONSHIP WITH SAID STREAM OF ELECTRONS, THE END WALLS SEPARATING ADJACENT ONES OF SAID CAVITIES DEFINING ALIGNED APERTURES IN THEIR CENTRAL REGIONS TO PROVIDE A PASSAGE FOR SAID STREAM OF ELECTRONS AND FURTHER DEFINING COUPLING HOLES IN REGIONS RADIALLY OUTWARDLY OF SAID CENTRAL REGIONS FOR INTERCONNECTING ADJACENT CAVITIES, AND A COATING OF LOSSY MATERIAL DISPOSED ON AT LEAST A PORTION OF THE SURFACE OF AT LEAST ONE OF SAID COUPLING HOLES.
Claim 2
Dependent Claim
123 words
A TRAVELING-WAVE TUBE COMPRISING: MEANS FOR PROVIDING A STREAM OF ELECTRONS ALONG A PREDETERMINED PATH, SLOW-WAVE STRUCTURE MEANS FOR PROPAGATING ELECTROMAGNETIC WAVE ENERGY IN SUCH MANNER THAT IT CAN INTERACT WITH SAID STREAM OF ELECTRONS, SAID SLOW-WAVE STRUCTURE MEANS DEFINING A PLURALITY OF INTERACTION CAVITIES DISPOSED SEQUENTIALLY ALONG AND IN ELECTROMAGNETIC INTERACTING RELATIONSHIP WITH SAID STREAM OF ELECTRONS, THE END WALLS SEPARATING ADJACENT ONES OF SAID CAVITIES DEFINING ALIGNED APERTURES IN THEIR CENTRAL REGIONS TO PROVIDE A PASSAGE FOR SAID STREAM OF ELECTRONS AND FURTHER DEFINING COUPLING HOLES IN REGIONS RADIALLY OUTWARDLY OF SAID CENTRAL REGIONS FOR INTERCONNECTING ADJACENT CAVITIES, AND A COATING OF LOSSY MATERIAL DISPOSED ON AT LEAST A PORTION OF THE SURFACE OF AT LEAST ONE OF SAID COUPLING HOLES.
References Cited (Backward Citations)
US3324339A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-06-30 | 1972-12-30 | 1973-07-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-06-30 | 1976-12-30 | 1977-07-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-06-30 | 1980-12-30 | 1981-07-01 | $7700.00 | Window Closed / Lapsed |