US3093964A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Two-stage rocket
Assignee: RTX Corp
•
Filing: 1960-12-14
•
Granted: 1963-06-18
•
Expires: 1980-12-14
Abstract
No abstract record available.
Inventors
- 👤 George F Hausmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 20:49
CPC Classifications
F; F02; F02K; F02K9/00; F02K9/74; F02K9/76; F02K9/763
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
96 words
A MULTI-UNIT PROPULSION DEVICE COMPRISING CONCENTRIC COAXIALLY DISPOSED INNER AND OUTER ROCKET UNITS, SAID INNER UNIT HAVING A POWER SECTION OF SUBSTANTIALLY CONSTANT CROSS SECTION AND AN EXHAUST NOZZLE RECEIVING FLUIDS FROM SAID POWER SECTION, SAID NOZZLE HAVING AN OUTER WALL, A PLUG IN SAID NOZZLE DEFINING A CONVERGENT PASSAGE, SAID PLUG TAPERING IN A DOWNSTREAM DIRECTION FROM ITS MAXIMUM DIMENSION AND PROTRUDING AFT OF THE DOWNSTREAM END OF SAID WALL, SAID OUTER UNIT COMPRISING AN ANNULAR CHAMBER AND HAVING AN INNER DIAMETER SUBSTANTIALLY EQUAL TO THE OUTER DIAMETER OF SAID INNER UNIT, AN ANNULAR EX-
References Cited (Backward Citations)
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Cited
US2484355A
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US2724237A
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US2589548A
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FR1003758A
Cited
US2701525A
Cited
US2750733A
Cited
GB773190A
Cited
US2939275A
Cited
US3049876A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-06-17 | 1966-12-17 | 1967-06-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-06-17 | 1970-12-17 | 1971-06-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-06-17 | 1974-12-17 | 1975-06-18 | $7700.00 | Window Closed / Lapsed |