US3178602A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adjustable permanent magnet focusing array
Assignee: General Precision Inc
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Filing: 1960-12-30
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Granted: 1965-04-13
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Expires: 1980-12-30
Abstract
No abstract record available.
Inventors
- 👤 Arthur E Meixner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 17:36
CPC Classifications
H; H01; H01J; H01J23/00; H01J23/02; H01J23/08; H01J23/087; H01J23/0873
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
148 words
AN IMPROVEMENT IN A PERMANENT MAGNET FOCUSING ARRAY USED IN CONNECTION WITH A TRAVELNG WAVE TUBE, WHEREIN TO SAID ARRAY WHICH INCLUDES A PLURALITY OF RING SHAPED MAGNETS DISPOSED SO THAT ADAJCENT POLES ARE OF THE SAME POLARITY WITH RING SHAPED POLE PIECES DISPOSED BETWEEN EACH MAGENT INCLUDING A HUB ON SAID POLE PIECES, THERE IS PROVIDED IN COMBINATION THEREWITH INNER LONGITUDINALLY ADJUSTABLE RINGS OF FERROMAGNETIC MATERIAL WITHIN THE INNER CYLINDRICAL SPACE DEFINED BY SAID POLE PIECE HUBS, WHEREBY, THE FLUX WHICH TRAVELS THROUGH THE AXIS OF THE ARRAY AND PROVIDES THE AXIAL FIELD STRENGTH NECESSARY TO FOCUS THE TRAVELING WAVE TUBE IS AT A MAXIMUM WHEN SAID INNER RINGS ARE SO POSITIONED THAT THE WIDTH OF SAID INNER RING IS CENTERED ON THE WIDTH OF THE POLE PIECE AND SAID FLUX IS AT A MINIMUM WHEN SAID INNER RING STRADDLES THE SPACE BETWEEN TWO SUCCEEDING POLE PIECES.
Claim 2
Dependent Claim
148 words
AN IMPROVEMENT IN A PERMANENT MAGNET FOCUSING ARRAY USED IN CONNECTION WITH A TRAVELNG WAVE TUBE, WHEREIN TO SAID ARRAY WHICH INCLUDES A PLURALITY OF RING SHAPED MAGNETS DISPOSED SO THAT ADAJCENT POLES ARE OF THE SAME POLARITY WITH RING SHAPED POLE PIECES DISPOSED BETWEEN EACH MAGENT INCLUDING A HUB ON SAID POLE PIECES, THERE IS PROVIDED IN COMBINATION THEREWITH INNER LONGITUDINALLY ADJUSTABLE RINGS OF FERROMAGNETIC MATERIAL WITHIN THE INNER CYLINDRICAL SPACE DEFINED BY SAID POLE PIECE HUBS, WHEREBY, THE FLUX WHICH TRAVELS THROUGH THE AXIS OF THE ARRAY AND PROVIDES THE AXIAL FIELD STRENGTH NECESSARY TO FOCUS THE TRAVELING WAVE TUBE IS AT A MAXIMUM WHEN SAID INNER RINGS ARE SO POSITIONED THAT THE WIDTH OF SAID INNER RING IS CENTERED ON THE WIDTH OF THE POLE PIECE AND SAID FLUX IS AT A MINIMUM WHEN SAID INNER RING STRADDLES THE SPACE BETWEEN TWO SUCCEEDING POLE PIECES.
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) | 1968-04-12 | 1968-10-12 | 1969-04-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-04-12 | 1972-10-12 | 1973-04-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-04-12 | 1976-10-12 | 1977-04-13 | $7700.00 | Window Closed / Lapsed |