US3689798A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for automatically controlling electrical conditions of an electron beam unit
Assignee: Moscow Power Engineering Institute
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Filing: 1971-07-16
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Granted: 1972-09-05
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Expires: 1991-07-16
Abstract
Abstract A device for automatically controlling electrical conditions of an electron beam unit having an electron gun wherein a main cathode is heated by a current of electrons emitted by an auxiliary cathode, the main cathode of the electron gun is supplied from a main cathode heating unit, the auxiliary cathode is supplied from an auxiliary cathode heating unit and a heating correction unit of said main cathode is connected to at least one of said units.
Inventors
- 👤 Igor Pavlovich Brukovsky
- 👤 Pavel Borisovich Yakovlev
- 👤 Kirill Davidovich Gutterman
- 👤 Alexandr Vasilievich Perov
- 👤 Vladimir Fedorovich Zhukov
- 👤 Larisa Petrovna Nekrasova
- 👤 Jury Dmitrievich Ivanovsky
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 05:07
CPC Classifications
H; H01; H01J; H01J37/00; H01J37/02; H01J37/24; H01J37/242; G; G05; G05F; G05F1/00; G05F1/10; G05F1/12; G05F1/40; G05F1/44
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
139 words
In a device for automatically controlling electrical conditions of an electron beam unit heating an element, the electron beam unit having an electron gun supply having an electron gun wherein a main cathode is heated by a current of electrons emitted by an auxiliary cathode, the improvement comprising a main cathode heating unit supplying said main cathode, an auxiliary cathode heating unit supplying said auxiliary cathode, and a main cathode heating correction means coupled between the electron gun supply and at least one of said heating units, said heating correction means detecting deviations of the current flowing between the main cathode and the element to be heated, said correction means varying the heating conditions of the main cathode in response to said deviations to stabilize the current by varying the power output of said at least one heating unit.
Claim 2
Dependent Claim
139 words
In a device for automatically controlling electrical conditions of an electron beam unit heating an element, the electron beam unit having an electron gun supply having an electron gun wherein a main cathode is heated by a current of electrons emitted by an auxiliary cathode, the improvement comprising a main cathode heating unit supplying said main cathode, an auxiliary cathode heating unit supplying said auxiliary cathode, and a main cathode heating correction means coupled between the electron gun supply and at least one of said heating units, said heating correction means detecting deviations of the current flowing between the main cathode and the element to be heated, said correction means varying the heating conditions of the main cathode in response to said deviations to stabilize the current by varying the power output of said at least one heating unit.
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) | 1975-09-05 | 1976-03-06 | 1976-09-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-09-05 | 1980-03-06 | 1980-09-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-09-05 | 1984-03-06 | 1984-09-05 | $7700.00 | Window Closed / Lapsed |