Patent US2833432A successfully refreshed from Google Patents.
Patent US3255377A successfully refreshed from Google Patents.
US3255377A
Expired / Lapsed
US
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Reverse magnetron with cathode support structure
Assignee: SFD LAB Inc
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Filing: 1962-08-27
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Granted: 1966-06-07
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Expires: 1982-08-27
Abstract
No abstract record available.
Inventors
- 👤 William C Sylvernal
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 19:17
CPC Classifications
H; H01; H01J; H01J25/00; H01J25/50; H01J25/52; H01J25/54; H01J25/55; H01J23/00; H01J23/02; H01J23/04; H01J23/05; H01J23/36
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
106 words
IN A MAGNETRON, A CIRCUMFERENTIAL ARRAY OF ANODE RESONATORS, A CATHODE EMITTER RING SURROUNDING SAID ANODE RESONATORS IN RADIALLY SPACED APART RELATION, A RELATIVELY RIGID AVACUABLE TUBE ENVELOPE STRUCTURE ENVELOPING SAID ANODE RESONATORS AND SAID CATHODE EMITTER, AN ANODE TO CATHODE INSULATOR FOR HOLDING OFF THE POTENTIAL APPLIED TO SAID CATHODE WITH RESPECT TO THAT APPLIED TO SAID ANODE, AND A SPRING STRUCTURE RADIALLY POSITIONING AND SUPPORTING SAID EMITTER RING WITH RESPECT TO SAID ANODE RESONATOR ARRAY FROM SAID TUBE ENVELOPE STRUCTURE FOR MAINTAINING CONCENTRICITY OF SAID ANODE RESONATOR AND SAID CATHODE EMITTER WHILE PERMITTING RELATIVE RADIAL MOTION BETWEEN SAID CATHODE EMITTER AND SAID ENVELOPE STRUCTURE.
Claim 2
Dependent Claim
106 words
IN A MAGNETRON, A CIRCUMFERENTIAL ARRAY OF ANODE RESONATORS, A CATHODE EMITTER RING SURROUNDING SAID ANODE RESONATORS IN RADIALLY SPACED APART RELATION, A RELATIVELY RIGID AVACUABLE TUBE ENVELOPE STRUCTURE ENVELOPING SAID ANODE RESONATORS AND SAID CATHODE EMITTER, AN ANODE TO CATHODE INSULATOR FOR HOLDING OFF THE POTENTIAL APPLIED TO SAID CATHODE WITH RESPECT TO THAT APPLIED TO SAID ANODE, AND A SPRING STRUCTURE RADIALLY POSITIONING AND SUPPORTING SAID EMITTER RING WITH RESPECT TO SAID ANODE RESONATOR ARRAY FROM SAID TUBE ENVELOPE STRUCTURE FOR MAINTAINING CONCENTRICITY OF SAID ANODE RESONATOR AND SAID CATHODE EMITTER WHILE PERMITTING RELATIVE RADIAL MOTION BETWEEN SAID CATHODE EMITTER AND SAID ENVELOPE STRUCTURE.
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) | 1969-06-06 | 1969-12-06 | 1970-06-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-06-06 | 1973-12-06 | 1974-06-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-06-06 | 1977-12-06 | 1978-06-07 | $7700.00 | Window Closed / Lapsed |