US3583419A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid jet amplifier
Assignee: National Aeronautics and Space Administration
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Filing: 1968-11-29
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Granted: 1971-06-08
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Expires: 1988-11-29
Abstract
Abstract A fluid amplifier is provided in which fluid is peeled off the power jet when control nozzle pressure exceeds a prescribed magnitude. The peeled-off fluid is redirected at such an angle as to tend to recenter the power jet. Additionally, in an alternate embodiment the control nozzles are aimed at respective flat walls which form an intermediate chamber downstream of the interaction chamber and in communication with a pair of diverging receiver channels.
Inventors
- 👤 William S Griffin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 13:32
CPC Classifications
F; F15; F15C; F15C1/00; F15C1/14; Y; Y10; Y10T; Y10T137/00; Y10T137/206; Y10T137/2229; Y10T137/224; Y10T137/2256; Y10T137/2262
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
142 words
A fluid amplifier comprising: an interaction chamber; power nozzle means for issuing a power jet of fluid into said interaction chamber; a control nozzle disposed on each side of said power nozzle for issuing fluid into said interaction chamber in intersecting relationship to said power jet of fluid, each control nozzle being inclined at an angle between 10* and 45* to said power nozzle; a pair of walls forming an orifice adjacent to said interaction chamber at its downstream end, said interaction chamber having flat sidewalls which converge in a downstream direction and which curve towards one another at its downstream end to form edges with respective ones of said pair of walls which form said orifice; an intermediate chamber downstream of said orifice; and a pair of receiver channels communicating with said intermediate chamber, said channels diverging in a downstream direction.
Claim 2
Dependent Claim
142 words
A fluid amplifier comprising: an interaction chamber; power nozzle means for issuing a power jet of fluid into said interaction chamber; a control nozzle disposed on each side of said power nozzle for issuing fluid into said interaction chamber in intersecting relationship to said power jet of fluid, each control nozzle being inclined at an angle between 10* and 45* to said power nozzle; a pair of walls forming an orifice adjacent to said interaction chamber at its downstream end, said interaction chamber having flat sidewalls which converge in a downstream direction and which curve towards one another at its downstream end to form edges with respective ones of said pair of walls which form said orifice; an intermediate chamber downstream of said orifice; and a pair of receiver channels communicating with said intermediate chamber, said channels diverging in a downstream direction.
Claim 3
Dependent Claim
75 words
The fluid amplifier as set forth in claim 1 and further including a pair of receiver vents each in communication with a respective one of said pair of receiver channels; a center vent disposed between said pair of receiver channels downstream of said intermediate chamber and in communication therewith through a center vent passageway, said center vent passageway being aligned with said power nozzle; and intermediate chamber vent means in communication with said intermediate chamber.
Claim 4
Dependent Claim
19 words
The fluid amplifier as defined in claim 1 wherein said walls forming said orifice diverge in a downstream direction.
Claim 5
Dependent Claim
25 words
The fluid amplifier of claim 1 wherein the sidewalls of said intermediate region diverge in a downstream direction in substantial alignment with said receiver channels.
Claim 6
Dependent Claim
141 words
A fluid amplifier comprising: an interaction chamber; power nozzle means for issuing a power jet of fluid into said interaction chamber; a control nozzle disposed on each side of said power nozzle for issuing fluid into said interaction chamber in intersecting relationship to said power jet of fluid, each control nozzle being inclined at an angle between 10* and 45* to said power nozzle; a pair of walls forming an orifice adjacent to said interaction chamber at its downstream end, said interaction chamber having walls forming cusps at respective opposite ends of said interaction region on opposite sides of the power nozzle in confronting relationship, said cusps forming edges with respective ones of said orifice walls; an intermediate chamber downstream of said orifice; and a pair of receiver channels communicating with said intermediate chamber, said channels diverging in a downstream direction.
Claim 7
Dependent Claim
141 words
A fluid amplifier comprising: an interaction chamber; power nozzle means for issuing a power jet of fluid into said interaction chamber; a control nozzle disposed on each side of said power nozzle for issuing fluid into said interaction chamber in intersecting relationship to said power jet of fluid, each control nozzle being inclined at an angle between 10* and 45* to said power nozzle; a pair of walls forming an orifice adjacent to said interaction chamber at its downstream end, said interaction chamber having walls forming cusps at respective opposite ends of said interaction region on opposite sides of the power nozzle in confronting relationship, said cusps forming edges with respective ones of said orifice walls; an intermediate chamber downstream of said orifice; and a pair of receiver channels communicating with said intermediate chamber, said channels diverging in a downstream direction.
Claim 8
Dependent Claim
36 words
The fluId amplifier defined in claim 5 wherein said intermediate chamber has sidewalls parallel to each other and to said power nozzle, each of said control nozzles being aimed at one of said intermediate chamber sidewalls.
Claim 9
Dependent Claim
19 words
The fluid amplifier defined in claim 5 wherein said walls forming said effective orifice diverge in a downstream direction.
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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) | 1974-06-07 | 1974-12-07 | 1975-06-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-07 | 1978-12-07 | 1979-06-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-07 | 1982-12-07 | 1983-06-08 | $7700.00 | Window Closed / Lapsed |