US3348092A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electron discharge device having a barium dispensing anode structure
Assignee: General Electric Co
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Filing: 1965-01-04
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Granted: 1967-10-17
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Expires: 1985-01-04
Abstract
No abstract record available.
Inventors
- 👤 James E Beggs
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 14:35
CPC Classifications
H; H01; H01J; H01J21/00; H01J21/02; H01J1/00; H01J1/02; H01J1/30; H01J21/36; H01J9/00; H01J9/02; H01J9/04; H01J9/042; H01J9/045
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
107 words
AN ELECTRON DISCHARGE DEVICE COMPRISING A CATHODE HAVING A THIN STABLE OXIDE COATING WHICH IS NORMALLY NON-EMISSIVE AT THE TEMPERATURTE OF OPERATION OF THE SAID CATHODE, MEANS FOR HEATING SAID CATHODE TO ITS OPERATING TEMPERATURE, AND AN ANODE JUXTAPOSED WITH RESPECT TO SAID CATHODE WHICH ANODE IS FORMED OF A REFRACTORY METAL MATERIAL RESIDING AT A TEMPERATURE SOMEWHAT LESS THAN SAID CATHODE DURING OPERATION OF SAID DEVICE, WHEREIN SAID ANODE IS PROVIDED WITH A BARIUM OXIDE MATERIAL REDUCED VERY GRADUALLY TO BARIUM AT THE OPERATION TEMPERATURE OF SAID ANODE FOR DISPENSING SAID BARIUM ON TO THE OXIDE COATING OF SAID CATHODE FOR ENHANCING THE ELETRON EMISSION THEREOF.
Claim 2
Dependent Claim
107 words
AN ELECTRON DISCHARGE DEVICE COMPRISING A CATHODE HAVING A THIN STABLE OXIDE COATING WHICH IS NORMALLY NON-EMISSIVE AT THE TEMPERATURTE OF OPERATION OF THE SAID CATHODE, MEANS FOR HEATING SAID CATHODE TO ITS OPERATING TEMPERATURE, AND AN ANODE JUXTAPOSED WITH RESPECT TO SAID CATHODE WHICH ANODE IS FORMED OF A REFRACTORY METAL MATERIAL RESIDING AT A TEMPERATURE SOMEWHAT LESS THAN SAID CATHODE DURING OPERATION OF SAID DEVICE, WHEREIN SAID ANODE IS PROVIDED WITH A BARIUM OXIDE MATERIAL REDUCED VERY GRADUALLY TO BARIUM AT THE OPERATION TEMPERATURE OF SAID ANODE FOR DISPENSING SAID BARIUM ON TO THE OXIDE COATING OF SAID CATHODE FOR ENHANCING THE ELETRON EMISSION THEREOF.
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) | 1970-10-16 | 1971-04-17 | 1971-10-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-10-16 | 1975-04-17 | 1975-10-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-10-16 | 1979-04-17 | 1979-10-17 | $7700.00 | Window Closed / Lapsed |