US3079752A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Variable expansion ratio nozzle
Assignee: Northrop Grumman Space and Mission Systems Corp
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Filing: 1961-02-23
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Granted: 1963-03-05
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Expires: 1981-02-23
Abstract
No abstract record available.
Inventors
- 👤 Russell F Thielman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 05:15
CPC Classifications
F; F02; F02K; F02K9/00; F02K9/97; F02K9/978; Y; Y10; Y10S; Y10S60/00; Y10S60/909
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
90 words
A VARIABLE EXPANSION RATIO GAS DISCHARGE NOZZLE ASSEMBLY ADAPTED TO DISCHARGE GASES GENERATED IN THE COMBUSTION CHAMBER OF A JET PROPULSION ENGINE, OR THE LIKE, COMPRISING: A RELATIVELY FIXED OUTER CONVERGENT-DIVERGENT NOZZLE ADAPTED TO BE SECURED TO SAID COMBUSTION CHAMBER AND SIZED TO PROVIDE A MAXIMUM EXPANSION RATIO, A PLURALITY OF RELEASABLE DIVERGENT PORTIONS, EACH OF SAID DIVERGENT PORTIONS BEING ARRANGED SUBSTANTIALLY ENTIRELY WITHIN THE DIVERGENT SECTION OF SAID NOZZLE WITH THE FORWARD EDGE OF EACH DIVERGENT PORTION ABUTTING THE DIVERGENT WALL OF SAID FIXED NOZZLE, SAID PORTIONS BEING CONCENTRIC
Claim 2
Dependent Claim
90 words
A VARIABLE EXPANSION RATIO GAS DISCHARGE NOZZLE ASSEMBLY ADAPTED TO DISCHARGE GASES GENERATED IN THE COMBUSTION CHAMBER OF A JET PROPULSION ENGINE, OR THE LIKE, COMPRISING: A RELATIVELY FIXED OUTER CONVERGENT-DIVERGENT NOZZLE ADAPTED TO BE SECURED TO SAID COMBUSTION CHAMBER AND SIZED TO PROVIDE A MAXIMUM EXPANSION RATIO, A PLURALITY OF RELEASABLE DIVERGENT PORTIONS, EACH OF SAID DIVERGENT PORTIONS BEING ARRANGED SUBSTANTIALLY ENTIRELY WITHIN THE DIVERGENT SECTION OF SAID NOZZLE WITH THE FORWARD EDGE OF EACH DIVERGENT PORTION ABUTTING THE DIVERGENT WALL OF SAID FIXED NOZZLE, SAID PORTIONS BEING CONCENTRIC
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-03-04 | 1966-09-03 | 1967-03-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-03-04 | 1970-09-03 | 1971-03-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-03-04 | 1974-09-03 | 1975-03-05 | $7700.00 | Window Closed / Lapsed |