US3188533A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Focussing system for an electron beam incorporating axially magnetized annular magnets
Assignee: Telefunken Patentverwertungs GmbH
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Filing: 1963-02-18
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Granted: 1965-06-08
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Expires: 1983-02-18
Abstract
No abstract record available.
Inventors
- 👤 Bretting Jork
- 👤 Griem Hans-Jurgen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 13:45
CPC Classifications
H; H01; H01J; H01J23/00; H01J23/02; H01J23/08; H01J23/087; H01J23/0873
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
135 words
FOR USE WITH A VACUUM ENVELOPE, A SYSTEM FOR FOCUSSING AN ELECTRON BEAM WITHIN THE ENVELOPE, SAID FOCUSSING SYSTEM COMPRISING, IN COMBINATION: (A) A PLURALITY OF COAXIALLY ALIGNED AND SPACED-APART ANNULAR MAGNET MEANS EACH HAVING AXIALLY SPACEDAPART N AND S POLES, SAID MAGNET MEANS BEING ARRANGED TO TH AT ANY ONE MAGNET MEANS HAS ITS N-POLE DIRECTED TOWARD THE N-POLE OF AN ADJACENT MAGNET MEANS AND ITS S-POLE DIRECTED TOWARD THE S-POLE OF AN ADJACENT MAGNET MEANS; (B) A SET OF FIRST POLE SHOES EACH INTERPOSED BETWEEN TO RESPECTIVE FACING N-POLES; (C) A SET OF SECOND POLE SHOES EACH INTERPOSED BETWEEN TWO RESPECTIVE FACING S-POLES; (D) FIRST YOKE MEANS MECHANICALLY CONNECTING SAID SET OF FIRST SHOE TO EACH OTHER; AND (E) SECOND YOKE MEANS MECHANICALLY CONNECTING SAID SET OF SECOND POLE SHOES OF EACH OTHER.
Claim 2
Dependent Claim
135 words
FOR USE WITH A VACUUM ENVELOPE, A SYSTEM FOR FOCUSSING AN ELECTRON BEAM WITHIN THE ENVELOPE, SAID FOCUSSING SYSTEM COMPRISING, IN COMBINATION: (A) A PLURALITY OF COAXIALLY ALIGNED AND SPACED-APART ANNULAR MAGNET MEANS EACH HAVING AXIALLY SPACEDAPART N AND S POLES, SAID MAGNET MEANS BEING ARRANGED TO TH AT ANY ONE MAGNET MEANS HAS ITS N-POLE DIRECTED TOWARD THE N-POLE OF AN ADJACENT MAGNET MEANS AND ITS S-POLE DIRECTED TOWARD THE S-POLE OF AN ADJACENT MAGNET MEANS; (B) A SET OF FIRST POLE SHOES EACH INTERPOSED BETWEEN TO RESPECTIVE FACING N-POLES; (C) A SET OF SECOND POLE SHOES EACH INTERPOSED BETWEEN TWO RESPECTIVE FACING S-POLES; (D) FIRST YOKE MEANS MECHANICALLY CONNECTING SAID SET OF FIRST SHOE TO EACH OTHER; AND (E) SECOND YOKE MEANS MECHANICALLY CONNECTING SAID SET OF SECOND POLE SHOES OF EACH OTHER.
References Cited (Backward Citations)
US2876373A
Cited
US2991382A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-06-07 | 1968-12-07 | 1969-06-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-06-07 | 1972-12-07 | 1973-06-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-06-07 | 1976-12-07 | 1977-06-08 | $7700.00 | Window Closed / Lapsed |