US3092184A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thrust augmentation for fluid current propulsion motors
Assignee: Individual
•
Filing: 1960-04-07
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Granted: 1963-06-04
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Expires: 1980-04-07
Abstract
No abstract record available.
Inventors
- 👤 Frederick M Day
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 12:08
CPC Classifications
B; B64; B64C; B64C11/00
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
51 words
A FLUID-CURRENT THRUST MOTOR COMPRISING A PITCHED MULTI-BLADED PROPELLER, AN OPEN END CENTRIFUGAL FLUID COMPRESSOR COAXIALLY DISPOSED CLOSELY ADJACENT AND SUPERPOSED OVER THE INTAKE SURFACE ONLY OF SAID PROPELLER, AND MEANS FOR RELATIVELY ROTATING SAID PROPELLER AND SAID COMPRESSOR AT A RELATIVE SPEED SUFFICIENT TO GENERATE SUBSTANTIAL FLUID VORTEX ACTION THEREBETWEEN.
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) | 1966-06-03 | 1966-12-03 | 1967-06-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-06-03 | 1970-12-03 | 1971-06-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-06-03 | 1974-12-03 | 1975-06-04 | $7700.00 | Window Closed / Lapsed |