Patent US3391869A successfully refreshed from Google Patents.
US3391869A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Variable cone area convergentdivergent nozzle system
Assignee: Rohr Inc
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Filing: 1966-05-23
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Granted: 1968-07-09
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Expires: 1986-05-23
Abstract
No abstract record available.
Inventors
- 👤 Benjamin G Glass
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 23:30
CPC Classifications
F; F02; F02K; F02K1/00; F02K1/06; F02K1/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
117 words
IN A JET ENGINE NOZZLE SYSTEM FOR HIGH SPEED AREOSPACE VEHICLES, THE COMBINATION OF MEANS DEFINING INNER AND OUTER COAXIAL DUCT SURFACES FOR THE PASSAGE OF AN EFFLUX GAS THEREBETWEEN, AT LEAST ONE OF SAID INNER AND OUTER DUCT SURFACES HAVING A PROFILE CONFIGURATION DEFINING THROAT AND EXIT PLANES, AND MEANS DISPOSED RESPECTIVELY WITHIN THE ZONES OF SAID THROAT AND EXIT PLANES FOR INDEPENDENTLY MODULATING THE AREA OF FLOW OF SAID EFFLUX GAS WITHIN SAID THROAT AND EXIT PLANES, SAID OUTER DUCT SURFACE HAVING A CONVERGENT-DIVERGENT PROFILE CONFIGURATION DEFINING SAID THROAT AND EXIT PLANES, AND SAID INNER DUCT SURFACE BEING EXPANDABLE AND CONTRACTABLE IN THE ZONES OF SAID THROAT AND EXIT PLANES TO EFFECT SAID AREA MODULATION.
Claim 2
Dependent Claim
117 words
IN A JET ENGINE NOZZLE SYSTEM FOR HIGH SPEED AREOSPACE VEHICLES, THE COMBINATION OF MEANS DEFINING INNER AND OUTER COAXIAL DUCT SURFACES FOR THE PASSAGE OF AN EFFLUX GAS THEREBETWEEN, AT LEAST ONE OF SAID INNER AND OUTER DUCT SURFACES HAVING A PROFILE CONFIGURATION DEFINING THROAT AND EXIT PLANES, AND MEANS DISPOSED RESPECTIVELY WITHIN THE ZONES OF SAID THROAT AND EXIT PLANES FOR INDEPENDENTLY MODULATING THE AREA OF FLOW OF SAID EFFLUX GAS WITHIN SAID THROAT AND EXIT PLANES, SAID OUTER DUCT SURFACE HAVING A CONVERGENT-DIVERGENT PROFILE CONFIGURATION DEFINING SAID THROAT AND EXIT PLANES, AND SAID INNER DUCT SURFACE BEING EXPANDABLE AND CONTRACTABLE IN THE ZONES OF SAID THROAT AND EXIT PLANES TO EFFECT SAID AREA MODULATION.
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) | 1971-07-09 | 1972-01-08 | 1972-07-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-07-09 | 1976-01-08 | 1976-07-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-07-09 | 1980-01-08 | 1980-07-09 | $7700.00 | Window Closed / Lapsed |