US3686937A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluidic direction and velocity detection apparatus
Assignee: United Control Corp
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Filing: 1970-06-10
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Granted: 1972-08-29
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Expires: 1990-06-10
Abstract
Abstract Fluidic detection apparatus for determining the direction and velocity of flow of an incident fluid flow stream. A jet stream producing means is disposed in axial spaced relation to a jet stream detector and initially disposed such that the common axis lies generally in the direction of flow of the incident fluid flow stream. Any deflection of the jet stream from its normal path, caused by the intersection therewith of the incident fluid flow stream, is detected by the jet stream detector and a servomechanism responsive thereto rotates the apparatus until the jet stream is aligned with the direction of the incident fluid flow stream. A second jet stream producing means and axially spaced jet stream detector are positioned 90* to the direction apparatus and are mounted for lateral translation by the servomechanism to detect the velocity of the same incident fluid flow stream.
Inventors
- 👤 Victor B Corey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:49
CPC Classifications
G; G01; G01P; G01P5/00; G01P5/005; G01F; G01F1/00; G01F1/05; G01F1/20; G01F1/203; G01P13/00; G01P13/02; G01P13/025; Y; Y10; Y10T; Y10T137/00; Y10T137/206; Y10T137/2065; Y10T137/2071
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
190 words
Apparatus for determining the direction and velocity of an incident fluid flow stream, comprising: velocity determining means having a first fluid jet stream directed along an axis exposed and movable with respect to said fluid flow stream, said jet stream deviating in direction when the flow stream is incident thereon, said velocity determining means detecting the deviation of said jet stream for determination of the actual velocity of the flow stream only when said axis is at a predetermined angular relation with respect to the direction of said incident flow stream; direction determining means having a second fluid jet stream along an axis normal to said first axis and exposed to said flow stream, the fluid of said second jet stream being composed of the same substance as the fluid of said first jet stream, said direction determining means detecting the deviation of said second jet stream for producing an indication of the direction of said incident fluid flow stream; and means responsive to said direction indication for moving said axes until said first axis is substantially perpendicular with respect to the indicated direction of said incident fluid flow stream.
Claim 2
Dependent Claim
190 words
Apparatus for determining the direction and velocity of an incident fluid flow stream, comprising: velocity determining means having a first fluid jet stream directed along an axis exposed and movable with respect to said fluid flow stream, said jet stream deviating in direction when the flow stream is incident thereon, said velocity determining means detecting the deviation of said jet stream for determination of the actual velocity of the flow stream only when said axis is at a predetermined angular relation with respect to the direction of said incident flow stream; direction determining means having a second fluid jet stream along an axis normal to said first axis and exposed to said flow stream, the fluid of said second jet stream being composed of the same substance as the fluid of said first jet stream, said direction determining means detecting the deviation of said second jet stream for producing an indication of the direction of said incident fluid flow stream; and means responsive to said direction indication for moving said axes until said first axis is substantially perpendicular with respect to the indicated direction of said incident fluid flow stream.
Claim 3
Dependent Claim
66 words
The apparatus of claim 1 wherein both said velocity determining means and direction determining means includes fluid pressure sensitive means having an output proportional to the deviation of the jet stream from a direction along the axis corresponding thereto, the output of the pressure sensitive means from said direction determining means being coupled to said moving means to control rotation of said first and second axes.
Claim 4
Dependent Claim
88 words
The direction detecting apparatus of claim 2 wherein said velocity determining means includes servo means for relatively moving the first jet stream with respect to the pressure sensitive means therefor, null seeking means controlling said servo means and coupled to the output of said last named pressure sensitive means for producing said relative motion until the magnitude of the relative motion is directly proportional to the velocity of said flow stream, and means responsive to said magnitude of relative motion for indicating the velocity of said flow stream.
Claim 5
Dependent Claim
166 words
Apparatus for determining the direction and velocity of an incident fluid flow stream, comprising: first jet means for emitting a first fluid jet stream along a first axis; first fluid detector means spaced from said first jet means along said first axis for producing a first signal output varying as the first jet stream deviates in direction from said first axis; second jet means for emitting a second fluid jet stream along a second axis; second fluid detector means spaced from said second jet means along said second axis for producing a second signal output varying as the second jet stream deviates in direction from said second axis; means responsive to said first signal output for orienting said second axis perpendicular to the direction of said fluid flow stream; and means responsive to said second signal output for relatively laterally displacing said second jet means and said second detector means until the displacement bears a direct proportional relation to the velocity of the fluid flow stream.
Claim 6
Dependent Claim
166 words
Apparatus for determining the direction and velocity of an incident fluid flow stream, comprising: first jet means for emitting a first fluid jet stream along a first axis; first fluid detector means spaced from said first jet means along said first axis for producing a first signal output varying as the first jet stream deviates in direction from said first axis; second jet means for emitting a second fluid jet stream along a second axis; second fluid detector means spaced from said second jet means along said second axis for producing a second signal output varying as the second jet stream deviates in direction from said second axis; means responsive to said first signal output for orienting said second axis perpendicular to the direction of said fluid flow stream; and means responsive to said second signal output for relatively laterally displacing said second jet means and said second detector means until the displacement bears a direct proportional relation to the velocity of the fluid flow stream.
Claim 7
Dependent Claim
30 words
The apparatus of claim 4 wherein the fluid compOsing said first jet stream and said second jet stream is the same as the fluid of said incident fluid flow stream.
Claim 8
Dependent Claim
53 words
The direction detecting apparatus of claim 4 wherein said second detector means includes at least two pressure sensitive means symmetrically disposed with respect to said second axis, said laterally displacing means moving said second jet means until the pressure sensed at pressure sensitive means on opposite sides of said second axis are equal.
References Cited (Backward Citations)
US3343413A
Cited
US3364741A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-08-29 | 1976-02-28 | 1976-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-29 | 1980-02-28 | 1980-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-29 | 1984-02-28 | 1984-08-29 | $7700.00 | Window Closed / Lapsed |