Patent US3209198A successfully refreshed from Google Patents.
US3209198A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Resilient helix mount for traveling wave tube
Assignee: GTE Sylvania Inc
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Filing: 1961-06-28
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Granted: 1965-09-28
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Expires: 1981-06-28
Abstract
No abstract record available.
Inventors
- 👤 James A Long
- 👤 Marshall B Mcdonald
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:06
CPC Classifications
H; H01; H01J; H01J23/00; H01J23/16; H01J23/24; H01J23/26
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
126 words
A TRAVELING WAVE TUBE HAVINAG AN ELONGATED ENVELOPE OF CIRCULAR CROSS-SECTION DISPOSED CONCENTRICALLY ABOUT THE AXIS OF THE TUBE, A GUN AT ONE END OF THE TUBE FOR PROJECTING A BEAM OF ELECTRONS DOWN THE AXIS OF THE TUBE, A HELICAL TRANSMISSION LINE DISPOSED WITHIN THE ENVELOPE CONCENTRICALLY OF THE AXIS OF THE TUBE, APLURALITY OF LINGITUDINALLY EXTENDING CIRCUMFERENTIALLY SPACED RODS ENGAGING THE EXTERIOR OF SAID HELIX, AND AN ELONGATED SPRING ELEMENT DISPOSED BETWEEN AND ENGAGING ONE OF THE RODS AND ADJACENT PORTIONS OF THE ENVELOPE, SAID SPRING ELEMENT HAVING A LONGITUDINALY UNDUATING CONFIGURATIN AND EXERTING A RADIAL SPRING PRESSURE THROUGH SAID ONE ROD ON SAID HELIX THROUGHOUT SUBSTANTIALLY THE LENGTH OF THE HELIX WHEREBY TO SUPPORT THE HELIX CONCENTRICALLY OF THE AXIS OF THE TUBES.
Claim 2
Dependent Claim
126 words
A TRAVELING WAVE TUBE HAVINAG AN ELONGATED ENVELOPE OF CIRCULAR CROSS-SECTION DISPOSED CONCENTRICALLY ABOUT THE AXIS OF THE TUBE, A GUN AT ONE END OF THE TUBE FOR PROJECTING A BEAM OF ELECTRONS DOWN THE AXIS OF THE TUBE, A HELICAL TRANSMISSION LINE DISPOSED WITHIN THE ENVELOPE CONCENTRICALLY OF THE AXIS OF THE TUBE, APLURALITY OF LINGITUDINALLY EXTENDING CIRCUMFERENTIALLY SPACED RODS ENGAGING THE EXTERIOR OF SAID HELIX, AND AN ELONGATED SPRING ELEMENT DISPOSED BETWEEN AND ENGAGING ONE OF THE RODS AND ADJACENT PORTIONS OF THE ENVELOPE, SAID SPRING ELEMENT HAVING A LONGITUDINALY UNDUATING CONFIGURATIN AND EXERTING A RADIAL SPRING PRESSURE THROUGH SAID ONE ROD ON SAID HELIX THROUGHOUT SUBSTANTIALLY THE LENGTH OF THE HELIX WHEREBY TO SUPPORT THE HELIX CONCENTRICALLY OF THE AXIS OF THE TUBES.
References Cited (Backward Citations)
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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) | 1968-09-27 | 1969-03-29 | 1969-09-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-27 | 1973-03-29 | 1973-09-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-27 | 1977-03-29 | 1977-09-28 | $7700.00 | Window Closed / Lapsed |