US3210575A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermoelectron engine having composite emitter
Assignee: Individual
•
Filing: 1961-03-07
•
Granted: 1965-10-05
•
Expires: 1981-03-07
Abstract
No abstract record available.
Inventors
- 👤 Podolsky Leon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 23:46
CPC Classifications
H; H01; H01J; H01J45/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
125 words
A THERMOELECTRON ENGINE COMPRISING A COLLECTOR, AN EMITTER SPACED FROM SAID COLLECTOR, SAID EMITTER BEING AT A LOWER ELECTRICAL POTENTIAL THAN SAID COLLECTOR AND HAVING AN EMITTING PORTION AND AN IONIZING PORTION, SAID EMITTING AND IONIZING PORTIONS TOUCHING EACH OTHER AND BEING IN ELECTRICAL CONTACT, A GAS COMPRISING POSITIVE IONS FILLER THE REGION BETWEEN SAID COLLECTOR AND SAID EMITTER, AND MEANS FOR HEATING SAID EMITTER TO CAUSE ELECTRON TO BE EXPELLED FROM THE SURFACE OF SAID EMITTING PORTION TOWARD SAID COLLECTOR, SAID IONIZING PORTION BEING NEARER TO SAID COLLECTOR THAN SAID EMITTING PORTION AND SERVING TO HEAT SAID GAS TO MAINTAIN IT IN GASEOUS STATE AND THEREBY SUSTAIN THE PRESENCE OF POSITIVE IONS FOR NEUTRALIZING THE SPACE CHARGE BETWEEN SAID EMITTER SAID EMITTER AND COLLECTOR.
Claim 2
Dependent Claim
125 words
A THERMOELECTRON ENGINE COMPRISING A COLLECTOR, AN EMITTER SPACED FROM SAID COLLECTOR, SAID EMITTER BEING AT A LOWER ELECTRICAL POTENTIAL THAN SAID COLLECTOR AND HAVING AN EMITTING PORTION AND AN IONIZING PORTION, SAID EMITTING AND IONIZING PORTIONS TOUCHING EACH OTHER AND BEING IN ELECTRICAL CONTACT, A GAS COMPRISING POSITIVE IONS FILLER THE REGION BETWEEN SAID COLLECTOR AND SAID EMITTER, AND MEANS FOR HEATING SAID EMITTER TO CAUSE ELECTRON TO BE EXPELLED FROM THE SURFACE OF SAID EMITTING PORTION TOWARD SAID COLLECTOR, SAID IONIZING PORTION BEING NEARER TO SAID COLLECTOR THAN SAID EMITTING PORTION AND SERVING TO HEAT SAID GAS TO MAINTAIN IT IN GASEOUS STATE AND THEREBY SUSTAIN THE PRESENCE OF POSITIVE IONS FOR NEUTRALIZING THE SPACE CHARGE BETWEEN SAID EMITTER SAID EMITTER AND COLLECTOR.
References Cited (Backward Citations)
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Cited
US2931934A
Cited
US2953706A
Cited
US2980819A
Cited
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Cited
US3088851A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-10-04 | 1969-04-05 | 1969-10-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-04 | 1973-04-05 | 1973-10-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-04 | 1977-04-05 | 1977-10-05 | $7700.00 | Window Closed / Lapsed |