Patent US3137798A successfully refreshed from Google Patents.
US3137798A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermionic power supply
Assignee: North American Aviation Corp
•
Filing: 1961-11-22
•
Granted: 1964-06-16
•
Expires: 1981-11-22
Abstract
No abstract record available.
Inventors
- 👤 Richard C Noyes
- 👤 Bernard L Hoffman
- 👤 Henkin Melvyn Lane
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 13:37
CPC Classifications
H; H01; H01J; H01J45/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
102 words
A PORTABLE THERMIONIC POWER SUPPLY COMPRISING A COMBUSTION CHAMBER; A SOURCE OF FUEL; MEANS FOR INTRODUCING SAID FUEL INTO SAID COMBUSTION CHAMBER; MEANS FOR DIRECTING AIR INTO SAID COMBUSTION CHAMBER; AT LEAST ONE THERMIONIC CONVERTER MEANS FOR CONVERTING HEAT DIRECTLY TO ELECTRICITY INCLUDING A CATHODE AND AN ANODE; MEANS FOR SUPPORTING SAID CATHODE SO THAT ITS OUTSIDE SURFACE IS IN HEAT EXCHANGING RELATIONSHIP TO SAID COMBUSTION CHAMBER; MEANS FOR COOLING SAID ANODE; MEANS FOR HEATING SAID AIR PRIOR TO ENTRY INTO SAID COMBUSTION CHAMBER INCLUDING SAID MEANS FOR COOLING SAID ANODE; AND MEANS FOR CONTROLLING THE ELECTRICAL OUTPUT OF SAID THERMIONIC CONVERTER.
Claim 2
Dependent Claim
102 words
A PORTABLE THERMIONIC POWER SUPPLY COMPRISING A COMBUSTION CHAMBER; A SOURCE OF FUEL; MEANS FOR INTRODUCING SAID FUEL INTO SAID COMBUSTION CHAMBER; MEANS FOR DIRECTING AIR INTO SAID COMBUSTION CHAMBER; AT LEAST ONE THERMIONIC CONVERTER MEANS FOR CONVERTING HEAT DIRECTLY TO ELECTRICITY INCLUDING A CATHODE AND AN ANODE; MEANS FOR SUPPORTING SAID CATHODE SO THAT ITS OUTSIDE SURFACE IS IN HEAT EXCHANGING RELATIONSHIP TO SAID COMBUSTION CHAMBER; MEANS FOR COOLING SAID ANODE; MEANS FOR HEATING SAID AIR PRIOR TO ENTRY INTO SAID COMBUSTION CHAMBER INCLUDING SAID MEANS FOR COOLING SAID ANODE; AND MEANS FOR CONTROLLING THE ELECTRICAL OUTPUT OF SAID THERMIONIC CONVERTER.
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) | 1967-06-16 | 1967-12-16 | 1968-06-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-06-16 | 1971-12-16 | 1972-06-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-06-16 | 1975-12-16 | 1976-06-16 | $7700.00 | Window Closed / Lapsed |