US2753801A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combination liquid and solid propellent rocket
Assignee: Individual
•
Filing: 1952-02-28
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Granted: 1956-07-10
•
Expires: 1972-02-28
Abstract
No abstract record available.
Inventors
- 👤 James M Cumming
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:09
CPC Classifications
F; F02; F02K; F02K9/00; F02K9/42; F02K9/60; F02K9/62; F02K9/72
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
66 words
A ROCKET COMPRISING A CYLINDRICAL BODY; A PERFORATED PARTITION LONGITUDINALLY MOVABLE THEREIN AND DEFINING THE INJECTOR END OF AN EXPANSIBLE COMBUSTION CHAMBER; AN EXHAUST NOZZLE AT THE AFT END OF SAID CYLINDRICAL BODY; A SOLID PROPELLANT SECURED TO THE PARTITION AND DISCHARGING REARWARDLY INTO THE COMBUSTION CHAMBER; AND A LIQUID PROPELLENT CHAMBER DISPOSED FORWARDLY OF THE PARTITION AND DISCHARGING THROUGH THE PERFORATIONS INTO THE COMBUSTION CHAMBER.
Claim 2
Dependent Claim
66 words
A ROCKET COMPRISING A CYLINDRICAL BODY; A PERFORATED PARTITION LONGITUDINALLY MOVABLE THEREIN AND DEFINING THE INJECTOR END OF AN EXPANSIBLE COMBUSTION CHAMBER; AN EXHAUST NOZZLE AT THE AFT END OF SAID CYLINDRICAL BODY; A SOLID PROPELLANT SECURED TO THE PARTITION AND DISCHARGING REARWARDLY INTO THE COMBUSTION CHAMBER; AND A LIQUID PROPELLENT CHAMBER DISPOSED FORWARDLY OF THE PARTITION AND DISCHARGING THROUGH THE PERFORATIONS INTO THE COMBUSTION CHAMBER.
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) | 1959-07-10 | 1960-01-09 | 1960-07-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-07-10 | 1964-01-09 | 1964-07-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-07-10 | 1968-01-09 | 1968-07-10 | $7700.00 | Window Closed / Lapsed |