Patent US3727093A successfully refreshed from Google Patents.
US3727093A
Expired / Lapsed
US
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Electron beam apparatus
Assignee: Westinghouse Electric Corp
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Filing: 1971-01-20
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Granted: 1973-04-10
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Expires: 1991-01-20
Abstract
Abstract A high energy electron beam apparatus is provided having a cathode assembly for operation within a high temperature environment. The assembly associated with the cathode is subjected to high temperature generated by the cathode and associated excitation source. More specifically, this invention is directed to the support assembly associated with and about the cathode which includes sealed conductors with insulation means provided thereabout and also means for supporting and positioning a bolt type cathode accurately with respect to the assembly.
Inventors
- 👤 J Fink
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 10:09
CPC Classifications
H; H01; H01J; H01J37/00; H01J37/30; H01J37/301; H01J37/02; H01J37/04; H01J37/06; H01J37/065
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
72 words
A high current density electron beam source comprising an elongated rod-like high temperature cathode of the bolt type for emission of electrons from one end with means distributed around said cathode and spaced therefrom for generating heat within the bolt cathode, spring means for positioning said bolt cathode longitudinally and an adjustable stop means bearing against the opposite end of said cathode with respect to the end from which electrons are emitted.
Claim 2
Dependent Claim
72 words
A high current density electron beam source comprising an elongated rod-like high temperature cathode of the bolt type for emission of electrons from one end with means distributed around said cathode and spaced therefrom for generating heat within the bolt cathode, spring means for positioning said bolt cathode longitudinally and an adjustable stop means bearing against the opposite end of said cathode with respect to the end from which electrons are emitted.
Claim 3
Dependent Claim
20 words
The source set forth in claim 1 in which graphite bearings are positioned along the length of said bolt cathode.
Claim 4
Dependent Claim
28 words
The soruce set forTh in claim 2 in which the spring means is of a high temperature spring material and secures said bolt cathode against said adjustable stop.
References Cited (Backward Citations)
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US2208406A
Cited
US2455381A
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US2509053A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-04-09 | 1976-10-09 | 1977-04-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-09 | 1980-10-09 | 1981-04-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-09 | 1984-10-09 | 1985-04-10 | $7700.00 | Window Closed / Lapsed |