US3089975A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electron discharge device
Assignee: Westinghouse Electric Corp
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Filing: 1961-11-21
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Granted: 1963-05-14
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Expires: 1981-11-21
Abstract
No abstract record available.
Inventors
- 👤 Jr Frederick L Washburn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:34
CPC Classifications
H; H01; H01J; H01J23/00; H01J23/16; H01J23/24; H01J23/26; H01J25/00; H01J25/34; H01J25/36; H01J25/38
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
120 words
A TRAVELING WAVE TUBE COMPRISING AN ENVELOPE, MEANS DISPOSED AT ONE END OF SAID ENVELOPE FOR THE PRODUCTION AND PROJECTION OF AN ELECTRON BEAM ALONG THE AXIAL LENGTH OF SAID ENVELOPE, MEANS DISPOSED AT THE OTHER END OF SAID ENVELOPE FOR THE COLLECTION OF SAID ELECTRON BEANS, SLOW-WAVE PROPAGATING MEANS DISPOSED WITHIN SAID ENVELOPE SUBSTANTIALLY COAXIAL AND IN AN INTERACTING RELATIONSHIP WITH SAID ELECTRON BEAM, SAID SLOW-WAVE PROPAGATING MEANS COMPRISING FIRST AND SECOND HELICAL MEMBERS OF CONDUCTING MATERIAL WOUND IN OPPOSITE DIRECTIONS WITH RESPECT TO EACH OTHER AND HAVING THE SAME BASIC RADIUS AND LONGITUDINAL AXIS, EACH OF SAID HELICAL MEMBERS HAVING A SERIES OF OUTWARDLY EXTENDING OFFSET PORTIONS AT ALTERNATE POINTS WHERE THE TWO HELICAL MEMBERS CROSS ONE ANOTHER.
Claim 2
Dependent Claim
120 words
A TRAVELING WAVE TUBE COMPRISING AN ENVELOPE, MEANS DISPOSED AT ONE END OF SAID ENVELOPE FOR THE PRODUCTION AND PROJECTION OF AN ELECTRON BEAM ALONG THE AXIAL LENGTH OF SAID ENVELOPE, MEANS DISPOSED AT THE OTHER END OF SAID ENVELOPE FOR THE COLLECTION OF SAID ELECTRON BEANS, SLOW-WAVE PROPAGATING MEANS DISPOSED WITHIN SAID ENVELOPE SUBSTANTIALLY COAXIAL AND IN AN INTERACTING RELATIONSHIP WITH SAID ELECTRON BEAM, SAID SLOW-WAVE PROPAGATING MEANS COMPRISING FIRST AND SECOND HELICAL MEMBERS OF CONDUCTING MATERIAL WOUND IN OPPOSITE DIRECTIONS WITH RESPECT TO EACH OTHER AND HAVING THE SAME BASIC RADIUS AND LONGITUDINAL AXIS, EACH OF SAID HELICAL MEMBERS HAVING A SERIES OF OUTWARDLY EXTENDING OFFSET PORTIONS AT ALTERNATE POINTS WHERE THE TWO HELICAL MEMBERS CROSS ONE ANOTHER.
References Cited (Backward Citations)
FR1071858A
Cited
US2997618A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-05-13 | 1966-11-12 | 1967-05-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-05-13 | 1970-11-12 | 1971-05-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-05-13 | 1974-11-12 | 1975-05-14 | $7700.00 | Window Closed / Lapsed |