Patent FR1506249A successfully refreshed from Google Patents.
Patent US3322997A successfully refreshed from Google Patents.
US3322997A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Permanent magnet focused klystron
Assignee: Varian Medical Systems Inc
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Filing: 1963-06-14
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Granted: 1967-05-30
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Expires: 1983-06-14
Abstract
No abstract record available.
Inventors
- 👤 Caryotakis George
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 13:25
CPC Classifications
H; H01; H01J; H01J23/00; H01J23/02; H01J23/08; H01J23/087; H01J23/0873
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
114 words
A KLYSTRON INCLUDING MEANS FOR PROJECTING AN ELECTRON BEAM, AT LEAST THREE DRIFT TUBE SECTIONS SURROUNDING SAID BEAM AND FORMING AT LEAST TWO INTERACTION GAPS, A RESONANT CAVITY SURROUNDING EACH OF SAID GAPS, MAGNETIC MEANS FOR MAINTAINING SAID BEAM IN FOCUS INCLUDING AT LEAST TWO ANNULAR AXIALLY MAGNETIZED PERMANENT MAGNETS A DISC OF MAGNETIC MATERIAL PROVIDING A LOW RELUCTANCE PATH FOR MAGNETIC FLUX BETWEEN SAID PERMANENT MAGNETS AND THE INTERMEDIATE ONE OF SAID DRIFT TUBE SECTIONS WHEREBY THE MAGNETIC FIELD OF SAID PERMANENT MAGNETS IS CONCENTRATED ADJACENT THE BEAM, SAID DISC OF MAGNETIC MATERIAL ADDITIONALLY FORMING A PORTION OF THE RESONANT CAVITY SURROUNDING THE GAP ASSOCIATED WITH SAID ONE OF SAID DRIFT TUBE SECTIONS.
Claim 2
Dependent Claim
114 words
A KLYSTRON INCLUDING MEANS FOR PROJECTING AN ELECTRON BEAM, AT LEAST THREE DRIFT TUBE SECTIONS SURROUNDING SAID BEAM AND FORMING AT LEAST TWO INTERACTION GAPS, A RESONANT CAVITY SURROUNDING EACH OF SAID GAPS, MAGNETIC MEANS FOR MAINTAINING SAID BEAM IN FOCUS INCLUDING AT LEAST TWO ANNULAR AXIALLY MAGNETIZED PERMANENT MAGNETS A DISC OF MAGNETIC MATERIAL PROVIDING A LOW RELUCTANCE PATH FOR MAGNETIC FLUX BETWEEN SAID PERMANENT MAGNETS AND THE INTERMEDIATE ONE OF SAID DRIFT TUBE SECTIONS WHEREBY THE MAGNETIC FIELD OF SAID PERMANENT MAGNETS IS CONCENTRATED ADJACENT THE BEAM, SAID DISC OF MAGNETIC MATERIAL ADDITIONALLY FORMING A PORTION OF THE RESONANT CAVITY SURROUNDING THE GAP ASSOCIATED WITH SAID ONE OF SAID DRIFT TUBE SECTIONS.
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) | 1970-05-29 | 1970-11-28 | 1971-05-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-05-29 | 1974-11-28 | 1975-05-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-05-29 | 1978-11-28 | 1979-05-30 | $7700.00 | Window Closed / Lapsed |