Patent US3221205A successfully refreshed from Google Patents.
US3221205A
Expired / Lapsed
US
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Traveling-wave tube with trap means for preventing oscillation at unwanted frequencies
Assignee: Raytheon Co
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Filing: 1962-05-23
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Granted: 1965-11-30
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Expires: 1982-05-23
Abstract
No abstract record available.
Inventors
- 👤 Sensiper Samuel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 21:27
CPC Classifications
H; H01; H01J; H01J25/00; H01J25/34; H01J25/36; H01J25/38; H01J23/00; H01J23/16; H01J23/24; H01J23/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
86 words
A TRAVELING-WAVE TUBE COMPRISING: MEANS FOR PROVIDING A STREAM OF ELECTRONS ALONG A PREDETERMINED PATH, SLOW-WAVE STRUCTURE MEANS DISPOSED ALONG AND ABOUT SAID PATH FOR PROPAGATING ELECTROMAGNETIC WAVE ENERGY WITHIN A PREDETERMINED FREQUENCY RANGE HAVING AN UPPER CUTOFF FREQUENCY AND A LOWER CUTOFF FREQUENCY IN SUCH MANNER AS TO PROVIDE INTERACTION BETWEEN SAID ELECTRON STREAM AND SAID ELECTROMAGNETIC WAVE ENERGY, AND LOSSCONTAINING HIGH PASS FILTER MEANS COUPLED TO SAID SLOWWAVE STRUCTURE MEANS FOR ABSORBING ELECTROMAGNETIC WAVE ENERGY FREQUENCIES NOT LOWER THAN SUBSTANTIALLY SAID UPPER CUTOFF FREQUENCY.
Claim 2
Dependent Claim
86 words
A TRAVELING-WAVE TUBE COMPRISING: MEANS FOR PROVIDING A STREAM OF ELECTRONS ALONG A PREDETERMINED PATH, SLOW-WAVE STRUCTURE MEANS DISPOSED ALONG AND ABOUT SAID PATH FOR PROPAGATING ELECTROMAGNETIC WAVE ENERGY WITHIN A PREDETERMINED FREQUENCY RANGE HAVING AN UPPER CUTOFF FREQUENCY AND A LOWER CUTOFF FREQUENCY IN SUCH MANNER AS TO PROVIDE INTERACTION BETWEEN SAID ELECTRON STREAM AND SAID ELECTROMAGNETIC WAVE ENERGY, AND LOSSCONTAINING HIGH PASS FILTER MEANS COUPLED TO SAID SLOWWAVE STRUCTURE MEANS FOR ABSORBING ELECTROMAGNETIC WAVE ENERGY FREQUENCIES NOT LOWER THAN SUBSTANTIALLY SAID UPPER CUTOFF FREQUENCY.
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) | 1968-11-29 | 1969-05-31 | 1969-11-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-29 | 1973-05-31 | 1973-11-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-29 | 1977-05-31 | 1977-11-30 | $7700.00 | Window Closed / Lapsed |