US3334265A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cross-field backward-wave oscillator
Assignee: Individual
•
Filing: 1966-06-02
•
Granted: 1967-08-01
•
Expires: 1986-06-02
Abstract
No abstract record available.
Inventors
- 👤 Horst W A Gerlach
- 👤 William E Waters
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 16:17
CPC Classifications
H; H01; H01J; H01J25/00; H01J25/34; H01J25/42; H01J25/46
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
135 words
AN ELONGATED GENERALLY CYLINDRICAL CROSSED-FIELD TRAVELING WAVE TUBE COMPRISING: (A) AN ELONGATED R-F STRUCTURE GENERALLY CONCENTRIC WITH THE LONGITUDINAL AXIS OF SAID TUBE, (B) AN ELONGATED ZERO POTENTIAL SOLE, SAID SOLE BEING CONCENTRIC WITH AND OF SAME LENGTH AS SAID R-F STRUCTURE BUT OF A DIFFERENT DIAMETER WITH SAID SOLE AND SAID R-F STRUCTURE DEFINING A GENERALLY CYLINDRICAL INTERACTION REGION BETWEEN SAID R-F STRUCTURE AND SAID SOLE. (C) COAXIAL CONICAL CATHODE MEANS FOR EMITTING ELECTRONS HAVING TRAJECTORIES WHICH ARE GEOMETRICALLY SIMILAR, SAID CATHODE MEANS BEING PLACED AT ONE END OF SAID TUBE OUTSIDE OF SAID INTERACTION REGION, THE SMALL END OF SAID CATHODE FACING SAID INTERACTION REGION, (D) FIRST MEANS FOR APPLYING A LONGITUDINAL STEADY MAGNETIC FIELD TO THE ENTIRE FOREGOING STRUCTURE TO OBTAIN HIGH BEAM STIFFNESS INCLUDING SAID CATHODE MEANS AND SAID INTERACTION REGION,
Claim 2
Dependent Claim
135 words
AN ELONGATED GENERALLY CYLINDRICAL CROSSED-FIELD TRAVELING WAVE TUBE COMPRISING: (A) AN ELONGATED R-F STRUCTURE GENERALLY CONCENTRIC WITH THE LONGITUDINAL AXIS OF SAID TUBE, (B) AN ELONGATED ZERO POTENTIAL SOLE, SAID SOLE BEING CONCENTRIC WITH AND OF SAME LENGTH AS SAID R-F STRUCTURE BUT OF A DIFFERENT DIAMETER WITH SAID SOLE AND SAID R-F STRUCTURE DEFINING A GENERALLY CYLINDRICAL INTERACTION REGION BETWEEN SAID R-F STRUCTURE AND SAID SOLE. (C) COAXIAL CONICAL CATHODE MEANS FOR EMITTING ELECTRONS HAVING TRAJECTORIES WHICH ARE GEOMETRICALLY SIMILAR, SAID CATHODE MEANS BEING PLACED AT ONE END OF SAID TUBE OUTSIDE OF SAID INTERACTION REGION, THE SMALL END OF SAID CATHODE FACING SAID INTERACTION REGION, (D) FIRST MEANS FOR APPLYING A LONGITUDINAL STEADY MAGNETIC FIELD TO THE ENTIRE FOREGOING STRUCTURE TO OBTAIN HIGH BEAM STIFFNESS INCLUDING SAID CATHODE MEANS AND SAID INTERACTION REGION,
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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) | 1970-07-31 | 1971-01-30 | 1971-08-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-31 | 1975-01-30 | 1975-08-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-31 | 1979-01-30 | 1979-08-01 | $7700.00 | Window Closed / Lapsed |