Patent US3972479A successfully refreshed from Google Patents.
US3972479A
Expired / Lapsed
US
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Jet interaction nozzle
Assignee: United States Department of the Army
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Filing: 1975-04-30
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Granted: 1976-08-03
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Expires: 1995-04-30
Abstract
Abstract A thruster nozzle for a vehicle control system having a circular cross section inlet and an enlongated slot shaped cross section outlet with a gradual transition from one to the other, coupled with a cant angle between the axis of the inlet and the axis of the outlet.
Inventors
- 👤 Richard A. Calabrese
- 👤 Ellis G. Estes
- 👤 Dean F. Hopkins
- 👤 Walter W. Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 20:56
CPC Classifications
F; F02; F02K; F02K9/00; F02K9/97; Y; Y10; Y10S; Y10S239/00; Y10S239/19
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
173 words
A thruster jet for use with a vehicle, said thruster jet comprising a titanium nozzle section having a flow passage therethrough and a relatively long exit extension fastened to the exit of said titanium section and projecting along the same longitudinal axis as the axis of the exit portion of said titanium section, said flow passage having an inlet portion of circular cross section and an exit of slot shaped cross section, said exit portion having a high length to width aspect ratio, a smooth gradual transition between the inlet and exit portions of said flow passage from said circular cross section to said slot cross section, a gradual bend in said flow passage between the inlet and exit ends thereof so that the longitudinal axis of the exit is canted forward with respect to the longitudinal axis of said inlet, said exit extension being shaved to the exterior contour of the vehicle in which the nozzle is installed after installation thereof, said extension being made of quartz cloth impregnated with phenolic resin.
Claim 2
Dependent Claim
173 words
A thruster jet for use with a vehicle, said thruster jet comprising a titanium nozzle section having a flow passage therethrough and a relatively long exit extension fastened to the exit of said titanium section and projecting along the same longitudinal axis as the axis of the exit portion of said titanium section, said flow passage having an inlet portion of circular cross section and an exit of slot shaped cross section, said exit portion having a high length to width aspect ratio, a smooth gradual transition between the inlet and exit portions of said flow passage from said circular cross section to said slot cross section, a gradual bend in said flow passage between the inlet and exit ends thereof so that the longitudinal axis of the exit is canted forward with respect to the longitudinal axis of said inlet, said exit extension being shaved to the exterior contour of the vehicle in which the nozzle is installed after installation thereof, said extension being made of quartz cloth impregnated with phenolic resin.
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) | 1979-08-03 | 1980-02-02 | 1980-08-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-08-03 | 1984-02-02 | 1984-08-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-08-03 | 1988-02-02 | 1988-08-03 | $7700.00 | Window Closed / Lapsed |