Patent US4688553A successfully refreshed from Google Patents.
Patent US3082351A successfully refreshed from Google Patents.
US3082351A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Crossed-field amplifier
Assignee: Westinghouse Electric Corp
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Filing: 1960-01-06
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Granted: 1963-03-19
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Expires: 1980-01-06
Abstract
No abstract record available.
Inventors
- 👤 Ernest C Okress
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:18
CPC Classifications
H; H01; H01J; H01J25/00; H01J25/34; H01J25/42; H01J25/44
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
113 words
AN ELECTRON DEVICE FOR AMPLIFYING ELECTROMAGNETIC WAVE ENERGY COMPRISING AN EVACUATED STRUCTURE INCLUDING A PLURALITY OF ELECTRICAL CIRCUITS COMPRISING SUBSTANTIALLY U-SHAPED MEMBERS OF ELECTRICALLY CONDUCTING MATERIAL PROVIDED THEREIN AND SPACED TO FORM AN ENCLOSED REENTRANT INTERACTION REGION, SAID CIRCUITS TOTALLY CLOSED AT EACH END, A CATHODE ELECTRODE PROVIDING SPACE CHARGE WITHIN SAID ENCLOSED REENTRANT INTERACTION REGION, MEANS TO PROVIDE A UNIFORM AXIAL MAGNETIC FIELD THROUGHOUT SAID REENTRANT INTERACTION REGION, A NON-REENTRANT WAVEGUIDE FOR PROPAGATING ELECTROMAGNETIC WAVES IN THE SPACE BETWEEN THE EVACUATED STRUCTURE AND SAID PLURALITY OF CIRCUITS, WHEREBY SAID ELECTROMAGNETIC WAVE IS AMPLIFIED DUE TO INTERACTION BETWEEN THE ELECTROMAGNETIC FIELD OF THE CIRCUIT AND THE SPACE CHARGE IN THE REENTRANT INTERACTION REGION.
Claim 2
Dependent Claim
113 words
AN ELECTRON DEVICE FOR AMPLIFYING ELECTROMAGNETIC WAVE ENERGY COMPRISING AN EVACUATED STRUCTURE INCLUDING A PLURALITY OF ELECTRICAL CIRCUITS COMPRISING SUBSTANTIALLY U-SHAPED MEMBERS OF ELECTRICALLY CONDUCTING MATERIAL PROVIDED THEREIN AND SPACED TO FORM AN ENCLOSED REENTRANT INTERACTION REGION, SAID CIRCUITS TOTALLY CLOSED AT EACH END, A CATHODE ELECTRODE PROVIDING SPACE CHARGE WITHIN SAID ENCLOSED REENTRANT INTERACTION REGION, MEANS TO PROVIDE A UNIFORM AXIAL MAGNETIC FIELD THROUGHOUT SAID REENTRANT INTERACTION REGION, A NON-REENTRANT WAVEGUIDE FOR PROPAGATING ELECTROMAGNETIC WAVES IN THE SPACE BETWEEN THE EVACUATED STRUCTURE AND SAID PLURALITY OF CIRCUITS, WHEREBY SAID ELECTROMAGNETIC WAVE IS AMPLIFIED DUE TO INTERACTION BETWEEN THE ELECTROMAGNETIC FIELD OF THE CIRCUIT AND THE SPACE CHARGE IN THE REENTRANT INTERACTION REGION.
References Cited (Backward Citations)
US2687777A
Cited
US2673306A
Cited
US2815469A
Cited
US2695929A
Cited
US2819449A
Cited
US2956204A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-03-18 | 1966-09-17 | 1967-03-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-03-18 | 1970-09-17 | 1971-03-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-03-18 | 1974-09-17 | 1975-03-19 | $7700.00 | Window Closed / Lapsed |