US3610261A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for varying the gain of a fluidic amplifier
Assignee: Bowles Fluidics Corp
•
Filing: 1969-06-27
•
Granted: 1971-10-05
•
Expires: 1989-06-27
Abstract
Abstract A variable gain fluidic amplifier of the stream interaction type employs an out-of-phase secondary control port for selectively modifying the power stream. In one embodiment the power stream is selectively deflected out of the plane of the primary control ports to vary the proportion of power stream fluid receivable at the outlet passages. In another embodiment the power stream is selectively compressed or pinched against a cover plate whereby the configuration of the velocity profile of the power stream is controllably varied.
Inventors
- 👤 Robert F Turek
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 21:31
CPC Classifications
F; F15; F15C; F15C1/00; F15C1/14; Y; Y10; Y10T; Y10T137/00; Y10T137/0318; Y10T137/0391; Y10T137/206; Y10T137/2229; Y10T137/224; Y10T137/2245
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
85 words
A variable gain fluidic amplifier comprising: means for issuing a power stream of fluid along a planar surface; means for selectively deflecting said power stream along said surface; output means for selectively receiving portions of said power stream as a function of power stream deflection along said planar surface; and gain control means for selectively compressing said power stream against said planar surface and changing the portions of said power stream received by said output means upon deflection of said power stream along said surface.
Claim 2
Dependent Claim
45 words
The variable gain fluidic amplifier according to claim 2 wherein said power stream has a predetermined velocity profile in the vIcinity of said output means and wherein said gain control means selectively alters said predetermined velocity profile by compressing said power stream against said surface.
Claim 3
Dependent Claim
29 words
The variable gain fluidic amplifier according to claim 3 wherein said gain control means comprises a gain control nozzle for issuing a gain control stream perpendicular to said surface.
Claim 4
Dependent Claim
121 words
A fluidic amplifier comprising: a power nozzle responsive to application of pressurized fluid thereto for issuing a power stream of fluid along a planar surface; input means for selectively deflecting said power stream in a first plane parallel to said planar surface; output means for receiving a varying portion of said power stream as a function of power stream deflection in said first plane; and gain control means for selectively varying the portion of said power stream received by said output means independently of said input means, said gain control means comprising means for issuing a gain control stream of fluid into interaction relationship with said power stream, said gain control stream having a flow component perpendicular to said planar surface.
Claim 5
Dependent Claim
28 words
The fluidic amplifier according to claim 5 wherein gain control means comprises a gain control nozzle oriented to issue said gain control stream perpendicular to said first plane.
Claim 6
Dependent Claim
178 words
A variable gain fluidic amplifier comprising: means for issuing a power stream of fluid along a surface; means for selectively deflecting said power stream along said surface; output means for selectively receiving portions of said power stream as a function of power stream deflection along said surface; gain control means for selectively compressing said power stream against said surface and changing the portions of said power stream received by said output means upon deflection of said power stream along said surface; wherein said power stream has a predetermined velocity profile in the vicinity of said output means, wherein said gain control means selectively alters said predetermined velocity profile by compressing said power stream against said surface, wherein said gain control means comprises a gain control nozzle for issuing a gain control stream perpendicular to said surface, wherein said power stream is issued along a surface parallel to said first plane, and wherein said gain control stream selectively compresses said power stream against said surface to alter said predetermined velocity profile as a function of said gain control stream.
Claim 7
Dependent Claim
171 words
A fluidic amplifier comprising: a power nozzle responsive to application of pressurized fluid thereto for issuing a power stream of fluid; input means for selectively deflecting in said power stream in a first plane; output means for receiving a varying portion of said power stream as a function of power stream deflection in said first plane; and gain control means for selectively varying the portion of said power stream received by said output means independently of said input means, said gain control means comprising means for issuing a gain control stream of fluid into interaction relationship with said power stream from a location outside of said first plane, wherein said gain control means comprises a gain control nozzle to issue said gain control stream perpendicular to said first plane, wherein said power stream is issued along a surface parallel to said first plane, said surface having a vent opening defined therein, and wherein said gain control stream is oriented to selectively deflect portions of said power stream through said vent opening.
Claim 8
Independent Claim
67 words
The method of varying the gain of a fluidic amplifier of the type wherein a power stream flows along a planar surface and is selectively deflected parallel to said planar surface relative to a receiver comprising the steps of: issuing a fluid power stream with a predetermine velocity profile along said planar surface; and selectively altering the configuration of said velocity profilE by compressing said power stream.
Claim 9
Dependent Claim
35 words
The method of claim 9 wherein compression of said power stream is effected by a control stream intersecting said power stream upstream of said receiver and having a flow component perpendicular to said planar surface.
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) | 1974-10-04 | 1975-04-05 | 1975-10-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-10-04 | 1979-04-05 | 1979-10-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-10-04 | 1983-04-05 | 1983-10-05 | $7700.00 | Window Closed / Lapsed |