US3121819A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Arrangement for reducing high voltage breakdown between helical windings in traveling wave tubes
Assignee: TDK Micronas GmbH
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Filing: 1959-12-30
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Granted: 1964-02-18
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Expires: 1979-12-30
Abstract
No abstract record available.
Inventors
- 👤 Robert W Wilmarth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:12
CPC Classifications
H; H01; H01J; H01J23/00; H01J23/16; H01J23/24; H01J23/26
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
52 words
A BEAM TUBE HAVING A LONGITUDINAL HELIX, A PLURALITY OF LONGITUDINAL SUPPORT MEANS POSITIONED AROUND SAID HELIX, ALTERNATE TURNS OF THE HELIX ALONG THE LENGTH OF EACH ADJACENT SUPPORT MEANS BEING PERIPHERALLY SPACED THEREFROM TO PROVIDE SPARK DISCHARGE GAPS BETWEEN ADJACENT HELIX TURNS AND SUPPORT MEANS TO INCREASE THE BREAKDOWN VOLTAGE THEREBETWEEN.
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) | 1967-02-17 | 1967-08-19 | 1968-02-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-02-17 | 1971-08-19 | 1972-02-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-02-17 | 1975-08-19 | 1976-02-18 | $7700.00 | Window Closed / Lapsed |