US3215868A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tiiermionic converter
Assignee: General Dynamics Corp
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Filing: 1961-10-20
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Granted: 1965-11-02
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Expires: 1981-10-20
Abstract
No abstract record available.
Inventors
- 👤 Robert W Pidd
- 👤 Jr Rolland A Missman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 00:29
CPC Classifications
H; H01; H01J; H01J45/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
107 words
AN IMPROVED HIGH TEMPERATURE-LOW PRESSURE THERMIONIC CONVERTER WHICH COMPRISES, IN COMBINATION, A CATHODE ADAPTED TO EMIT ELECTRONS OF HIGH TEMPERATURE, AN ANODE SPACED FROM SAID CATHODE AND ADAPTED TO OPERATE AT A TEMPERATURE LOWER THAN THE OPERATING TEMPERATURE OF SAID CATHODE, MEANS ELECTRICALLY INSULATING SAID CATHODE AND ANODE FROM ONE ANOTHER, CONNECTOR MEANS ATTACHED TO SAID CATHODE AND ANODE WHEREBY SAID ANODE AND CATHODE MAY BE EXTERNALLY CONNECTED, MEANS PROVIDING AN EVACUATED ZONE EXTENDING BETWEEN SAID CATHODE AND SAID ANODE, MEANS CONNECTED TO SAID ZONE CONTAINING A READILY IONIZABLE ALKALI METAL ADAPTED TO PROVIDE CARRIER GAS AT LOW PRESSURE IN SAID ZONE, SAID CARRIER GAS FACILITATING THE
Claim 2
Dependent Claim
107 words
AN IMPROVED HIGH TEMPERATURE-LOW PRESSURE THERMIONIC CONVERTER WHICH COMPRISES, IN COMBINATION, A CATHODE ADAPTED TO EMIT ELECTRONS OF HIGH TEMPERATURE, AN ANODE SPACED FROM SAID CATHODE AND ADAPTED TO OPERATE AT A TEMPERATURE LOWER THAN THE OPERATING TEMPERATURE OF SAID CATHODE, MEANS ELECTRICALLY INSULATING SAID CATHODE AND ANODE FROM ONE ANOTHER, CONNECTOR MEANS ATTACHED TO SAID CATHODE AND ANODE WHEREBY SAID ANODE AND CATHODE MAY BE EXTERNALLY CONNECTED, MEANS PROVIDING AN EVACUATED ZONE EXTENDING BETWEEN SAID CATHODE AND SAID ANODE, MEANS CONNECTED TO SAID ZONE CONTAINING A READILY IONIZABLE ALKALI METAL ADAPTED TO PROVIDE CARRIER GAS AT LOW PRESSURE IN SAID ZONE, SAID CARRIER GAS FACILITATING THE
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) | 1968-11-01 | 1969-05-03 | 1969-11-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-01 | 1973-05-03 | 1973-11-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-01 | 1977-05-03 | 1977-11-02 | $7700.00 | Window Closed / Lapsed |