US3346747A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electro-fluid-dynamic generator
Assignee: RTX Corp
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Filing: 1964-07-07
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Granted: 1967-10-10
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Expires: 1984-07-07
Abstract
No abstract record available.
Inventors
- 👤 John W Larson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 23:24
CPC Classifications
H; H02; H02N; H02N3/00
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
78 words
THE METHOD OF REDUCING THE SPACE CHARGE EFFECT IN AN ELECTRO-FLUID-DYNAMIC ENGINE HAVING AN ANNULAR FLUID PASSAGE DEFINED BETWEEN INNER AND OUTER WALLS INCLUDING SMALL RINGED ELECTRODES IN THE INNER WALL AND LARGE RINGED ELECTRODES IN THE OUTER WALL COMPRISING POSITIONING ELECTRICALLY CONNECTED PAIRS OF SMALL AND LARGE RINGED ELECTRODES IN SPACED AXIAL RELATION ALONG THE PASSAGE TO ESTABLISH CONSTANT VOLTAGE POTENTIAL REGIONS THEREBETWEEN TO THEREBY ESTABLISH THE SPACED CHARGE FIELD AT AN ANGLE TO THE ELECTROSTATIC FIELD.
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) | 1970-10-09 | 1971-04-10 | 1971-10-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-10-09 | 1975-04-10 | 1975-10-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-10-09 | 1979-04-10 | 1979-10-10 | $7700.00 | Window Closed / Lapsed |