Patent US3091924A successfully refreshed from Google Patents.
US3091924A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gaseous nozzle boundary
Assignee: RTX Corp
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Filing: 1960-12-15
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Granted: 1963-06-04
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Expires: 1980-12-15
Abstract
No abstract record available.
Inventors
- 👤 Jr John G Wilder
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 19:58
CPC Classifications
F; F02; F02K; F02K9/00; F02K9/80; F02K9/82; F02K9/08; F02K9/10; F02K9/12; F02K9/97; F02K9/972; F05; F05D; F05D2260/00; F05D2260/20; F05D2260/202; F05D2260/203; Y; Y10; Y10S; Y10S60/00; Y10S60/909
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
123 words
A SOLID PROPELLANT RACKET ENGINE HAVING A MAIN COMBUSTION CHAMBER WITH A DISCHARGE NOZZLE ATTACHED THERETO, SAID COMBUSTION CHAMBER HAVING THEREIN A FIRST SOLID PROPELLANT WHICH BURNS AT A RELATIVELY HIGH TEMPERATURE, SAID NOZZLE BEING OF A RELATIVELY LIGHT CONSTRUCTION AND NORMALLY UNABLE TO RESIST THE TEMPERATURE AND PRESSURE DEVELOPED BY SAID FIRST SOLID PROPELLANT, AN ANNULAR CHAMBER SURROUNDING SAID COMBUSTION ZONE, SAID ANNULAR CHAMBER HAVING A SECOND SOLID PROPELLANT THEREIN, SAID SECOND SOLID PROPELLANT BURNING AT A RELATIVELY LOW TEMPERATURE AND HAVING CLEAN GAS CHARACTERISTICS BY COMPARISON WITH SAID FIRSTT PROPELLANT, AND PERFORATIONS THROUGH SAID NOZZLE CONNECTING SAID CHAMBER CONTAINING THE SECOND SOLID PROPELLANT WITH THE INNER SURFACE OF THE NOZZLE WHEREBY THE OFF GAS FROM THE SAID SECOND SOLID PROPELLANT PASSES
Claim 2
Dependent Claim
123 words
A SOLID PROPELLANT RACKET ENGINE HAVING A MAIN COMBUSTION CHAMBER WITH A DISCHARGE NOZZLE ATTACHED THERETO, SAID COMBUSTION CHAMBER HAVING THEREIN A FIRST SOLID PROPELLANT WHICH BURNS AT A RELATIVELY HIGH TEMPERATURE, SAID NOZZLE BEING OF A RELATIVELY LIGHT CONSTRUCTION AND NORMALLY UNABLE TO RESIST THE TEMPERATURE AND PRESSURE DEVELOPED BY SAID FIRST SOLID PROPELLANT, AN ANNULAR CHAMBER SURROUNDING SAID COMBUSTION ZONE, SAID ANNULAR CHAMBER HAVING A SECOND SOLID PROPELLANT THEREIN, SAID SECOND SOLID PROPELLANT BURNING AT A RELATIVELY LOW TEMPERATURE AND HAVING CLEAN GAS CHARACTERISTICS BY COMPARISON WITH SAID FIRSTT PROPELLANT, AND PERFORATIONS THROUGH SAID NOZZLE CONNECTING SAID CHAMBER CONTAINING THE SECOND SOLID PROPELLANT WITH THE INNER SURFACE OF THE NOZZLE WHEREBY THE OFF GAS FROM THE SAID SECOND SOLID PROPELLANT PASSES
References Cited (Backward Citations)
US1943821A
Cited
US2354151A
Cited
US2395114A
Cited
US2439473A
Cited
US2694898A
Cited
US2625007A
Cited
FR1197701A
Cited
US2916873A
Cited
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 |