US3171248A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thrust cut-off method
Assignee: RTX Corp
•
Filing: 1963-02-04
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Granted: 1965-03-02
•
Expires: 1983-02-04
Abstract
No abstract record available.
Inventors
- 👤 Walter A Ledwith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 01:11
CPC Classifications
F; F02; F02K; F02K9/00; F02K9/80; F02K9/92; F02K9/97; F02K9/978
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
52 words
THE METHOD OF TERMINATING THRUST IN A SOLID PROPELLANT ROCKET COMPRISING GENERATING PRESSURIZED PRODUCTS OF SOLID PROPELLANT COMBUSTION, THEN DISCHARGING THE PRODUCTS TO ATMOSPHERE THROUGH A RESTRICTED NOZZLE TO GENERATE THRUST, THEN INCREASING THE AREA OF THE NOZZLE RESTRICTION TO REDUCE THE GENERATED PRESSURE BELOW THE LOWER COMBUSTION LIMIT OF THE PROPELLANT.
Claim 2
Independent Claim
52 words
THE METHOD OF TERMINATING THRUST IN A SOLID PROPELLANT ROCKET COMPRISING GENERATING PRESSURIZED PRODUCTS OF SOLID PROPELLANT COMBUSTION, THEN DISCHARGING THE PRODUCTS TO ATMOSPHERE THROUGH A RESTRICTED NOZZLE TO GENERATE THRUST, THEN INCREASING THE AREA OF THE NOZZLE RESTRICTION TO REDUCE THE GENERATED PRESSURE BELOW THE LOWER COMBUSTION LIMIT OF THE PROPELLANT.
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) | 1968-03-01 | 1968-08-31 | 1969-03-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-03-01 | 1972-08-31 | 1973-03-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-03-01 | 1976-08-31 | 1977-03-02 | $7700.00 | Window Closed / Lapsed |