US3785390A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pure fluid amplifier
Assignee: Powers Regulator Co
•
Filing: 1970-07-27
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Granted: 1974-01-15
•
Expires: 1990-07-27
Abstract
Abstract A pure fluid amplifier which projects a laminar power stream and includes a control section for developing a pressure differential across the projected laminar power stream for a substantial portion of the length of the power stream (preferably a portion of the length of the power stream at least equal to four times the width of the power stream emission orifice) so as to angularly displace the power stream while maintaining the power stream laminar at all points in advance of the receiver aperture. Preferably, there is a venting region immediately in advance of the receiver aperture which is relieved in all directions in a plane perpendicular to the plane of angular displacement. A system for biasing the laminar deflector (or other pressureoperated pure fluid amplifier) by aspirating fluid from the control section in a quantity substantially equal to the quiescent input flow to the amplifier. A unit ventilator control using a laminar deflector is shown. A proportional controller using a biased laminar deflector is shown.
Inventors
- 👤 W Taylor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 18:03
CPC Classifications
F; F15; F15C; F15C1/00; F15C1/14; Y; Y10; Y10T; Y10T137/00; Y10T137/0318; Y10T137/0391; Y10T137/206; Y10T137/2229; Y10T137/224; Y10T137/2262; Y10T137/2273
Claims Analysis
Total Claims: 38
Claim 1
Independent Claim
362 words
A pure fluid amplifier comprising: a. a supply conduit of predetermined parameters and including an emission orifice, said conduit being adapted to produce a laminar fluid stream; b. means for effecting flow of fluid through said supply conduit under a predetermined pressure relative to said parameters so as to project a laminar fluid power stream from said supply conduit emission orifice; c. at least one receiver aperture spaced a predetermined distance from said supply conduit emission orifice and positioned to normally receive at least a portion of said projected laminar power stream; d. control means for applying a biasing pressure differential across said power stream for a predetermined portion of its length for angularly displacing said power stream an amount dependent upon the magnitude of said pressure differential while maintaining said power stream laminar at all points in advance of said receiver aperture, said control means including means confining said power stream to its plane of angular displacement for said predetermined portion of its length, means defining a control chamber extending along one side of said power stream from said supply conduit emission orifice for a distance equal at least to four times the dimension of said supply conduit emission orifice in said plane of angular displacement and including a downstream wall which approaches the non-angularly displaced locAtion of said power stream, means for applying a fluid pressure condition to said control chamber without causing a substantial fluid stream velocity component to impinge against said power stream, means disposed on the opposite side of said power stream from said control chamber for applying a second fluid pressure condition to said predetermined portion of the length of said power stream, said second fluid pressure condition being applied to said power stream without causing a substantial fluid stream velocity component to impinge against said power stream, said biasing pressure differential being the difference in magnitude between the first mentioned fluid pressure condition and said seocnd fluid pressure condition; and e. means defining a venting region immediately in advance of said receiver aperture, said venting region being relieved in all directions in a plane perpendicular to the plane of angular displacement of said power stream.
Claim 2
Dependent Claim
362 words
A pure fluid amplifier comprising: a. a supply conduit of predetermined parameters and including an emission orifice, said conduit being adapted to produce a laminar fluid stream; b. means for effecting flow of fluid through said supply conduit under a predetermined pressure relative to said parameters so as to project a laminar fluid power stream from said supply conduit emission orifice; c. at least one receiver aperture spaced a predetermined distance from said supply conduit emission orifice and positioned to normally receive at least a portion of said projected laminar power stream; d. control means for applying a biasing pressure differential across said power stream for a predetermined portion of its length for angularly displacing said power stream an amount dependent upon the magnitude of said pressure differential while maintaining said power stream laminar at all points in advance of said receiver aperture, said control means including means confining said power stream to its plane of angular displacement for said predetermined portion of its length, means defining a control chamber extending along one side of said power stream from said supply conduit emission orifice for a distance equal at least to four times the dimension of said supply conduit emission orifice in said plane of angular displacement and including a downstream wall which approaches the non-angularly displaced locAtion of said power stream, means for applying a fluid pressure condition to said control chamber without causing a substantial fluid stream velocity component to impinge against said power stream, means disposed on the opposite side of said power stream from said control chamber for applying a second fluid pressure condition to said predetermined portion of the length of said power stream, said second fluid pressure condition being applied to said power stream without causing a substantial fluid stream velocity component to impinge against said power stream, said biasing pressure differential being the difference in magnitude between the first mentioned fluid pressure condition and said seocnd fluid pressure condition; and e. means defining a venting region immediately in advance of said receiver aperture, said venting region being relieved in all directions in a plane perpendicular to the plane of angular displacement of said power stream.
Claim 3
Dependent Claim
48 words
A pure fluid amplifier as defined in claim 1 wherein said confining means confines said power stream to a dimension perpendicular to said plane of angular displacement and substantially equal to the dimension of said supply conduit emission orifice which is perpendicular to said plane of angular deflection.
Claim 4
Dependent Claim
36 words
A pure fluid amplifier as defined in claim 1 wherein said downstream wall approaches the non-angularly displaced position of said laminar power stream to a preselected spacing determining the input impedance characteristics of said control chamber.
Claim 5
Dependent Claim
282 words
A pure fluid amplifier comprising: a. a supply conduit of predetermined parameters and including an emission orifice, said conduit being adapted to produce a laminar fluid stream; b. means for supplying to said supply conduit under a predetermined pressure relative to said parameters so as to project a laminar fluid power stream from said supply conduit emission orifice; c. at least one receiver aperture spaced a predetermined distance downstream from said supply conduit emission orifice and positioned to normally receive at least a portion of said projected laminar power stream; d. control means for applying a biasing pressure differential across said power stream for a predetermined portion of its length for angularly displacing said power stream an amount dependent upon the magnitude of said pressure differential while maintaining said power stream laminar at all points in advance of said receiver aperture, said control means including means confining said power stream to the plane of its angular displacement for said predetermined portion of its length, means defining a control chamber extending along one side of said power stream from said supply conduit emission orifice for a distance equal to at least four times the dimension of said supply conduit emission orifice in said plane of angular displacement and including a downstream wall which approaches the non-angularly displaced loaction of said power stream, means for applying a fluid pressure condition to said control chamber without causing a substantial fluid stream velocity component to impinge against said power stream; and e. means defining a venting region immediately in advance of said receiver aperture, said venting region being relieved in all directions in a plane perpendicular to the plane of angular displacement of said power stream.
Claim 6
Dependent Claim
282 words
A pure fluid amplifier comprising: a. a supply conduit of predetermined parameters and including an emission orifice, said conduit being adapted to produce a laminar fluid stream; b. means for supplying to said supply conduit under a predetermined pressure relative to said parameters so as to project a laminar fluid power stream from said supply conduit emission orifice; c. at least one receiver aperture spaced a predetermined distance downstream from said supply conduit emission orifice and positioned to normally receive at least a portion of said projected laminar power stream; d. control means for applying a biasing pressure differential across said power stream for a predetermined portion of its length for angularly displacing said power stream an amount dependent upon the magnitude of said pressure differential while maintaining said power stream laminar at all points in advance of said receiver aperture, said control means including means confining said power stream to the plane of its angular displacement for said predetermined portion of its length, means defining a control chamber extending along one side of said power stream from said supply conduit emission orifice for a distance equal to at least four times the dimension of said supply conduit emission orifice in said plane of angular displacement and including a downstream wall which approaches the non-angularly displaced loaction of said power stream, means for applying a fluid pressure condition to said control chamber without causing a substantial fluid stream velocity component to impinge against said power stream; and e. means defining a venting region immediately in advance of said receiver aperture, said venting region being relieved in all directions in a plane perpendicular to the plane of angular displacement of said power stream.
Claim 7
Dependent Claim
175 words
A pure fluid amplifier comprising: a. a supply conduit of predetermined parameters and including an emission orifice, said conduit being adapted to produce a laminar fluid stream; b. means for effecting flow of fluid through said supply conduit under a predetermined pressure relative to said parameters so as to project a laminar fluid power stream from said supply conduit emission orifice; c. at least one receiver aperture spaced a predetermined distance from said supply conduit emission orifice and positioned to normally receive at least a portion of said projected laminar power stream; and d. control means for applying a biasing pressure differential across said power stream for a predetermined portion of its length at least in excess of the width of said supply conduit emission orifice for angularly displacing said power stream, as a proportional function of said biasing pressure differential, while maintaining said power stream laminar at all points in advance of said receiver aperture, whereby an output signal is received at said receiver which is a proportional function of said biasing pressure differential.
Claim 8
Dependent Claim
175 words
A pure fluid amplifier comprising: a. a supply conduit of predetermined parameters and including an emission orifice, said conduit being adapted to produce a laminar fluid stream; b. means for effecting flow of fluid through said supply conduit under a predetermined pressure relative to said parameters so as to project a laminar fluid power stream from said supply conduit emission orifice; c. at least one receiver aperture spaced a predetermined distance from said supply conduit emission orifice and positioned to normally receive at least a portion of said projected laminar power stream; and d. control means for applying a biasing pressure differential across said power stream for a predetermined portion of its length at least in excess of the width of said supply conduit emission orifice for angularly displacing said power stream, as a proportional function of said biasing pressure differential, while maintaining said power stream laminar at all points in advance of said receiver aperture, whereby an output signal is received at said receiver which is a proportional function of said biasing pressure differential.
Claim 9
Dependent Claim
51 words
A pure fluid amplifier as defined in claim 5 wherein said control means applies said biasing pressure differential across said power stream for a portion of its length in excess of four times the dimension of said supply conduit emission orifice in the plane of angular deflection of said power stream.
Claim 10
Dependent Claim
34 words
A pure fluid amplifier as defined in claim 5 wherein said control means includes means for confining said power stream in the plane of its angular displacement for said predetermined portion of its length.
Claim 11
Dependent Claim
48 words
A pure fluid amplifier as defined in claim 7 wherein the last mentioned means confines said power stream to a dimension perpendicular to said plane of angular displacement substantially equal to the dimension of said supply conduit emission orifice which is perpendicular to said plane of angular deflection.
Claim 12
Dependent Claim
44 words
A pure fluid amplifier according to claim 5 further comprising means defining a venting region immediately in advance of said receiver aperture, said venting region being relieved in all directions in a plane perpendicular to the plane of angular displacement of said power stream.
Claim 13
Dependent Claim
137 words
A pure fluid amplifier as defined in claim 5 wherein said control means includes: means confining said power stream in the plane of its angular displacement for said predetermined portion of its length; means further defining a control chamber on at least one side of said power stream, open to said power stream, and extending said predetermined portion of the length of said power stream in a direction parallel to said power stream, said means defining said control chamber including a downstream wall which approaches the non-angularly displaced location of said power stream; and means for applying a fluid pressure condition to said control chamber without causing a substantial fluid stream velocity component to impinge against said power stream whereby said fluid pressure condition is applied to said predetermined portion of the length of said power stream.
Claim 14
Dependent Claim
90 words
A pure fluid amplifier as defined in claim 10 wherein said control means further includes means disposed on the opposite side of said power stream for applying a second fluid pressure condition to said predetermined portion of the length of said power stream, said second fluid pressure condition being applied to said power stream without causing a substantial fluid stream velocity component to impinge against said power stream, said biasing pressure differential being the difference in magnitude between the first mentioned fluid pressure condition and said second fluid pressure condition.
Claim 15
Dependent Claim
47 words
A pure fluid amplifier as defined in claim 11 wherein said control means applies said biasing pressure differential across said power stream for a portion of its length in excess of four times the dimension of said supply conduit emission orifice in said plane of angular displacement.
Claim 16
Dependent Claim
38 words
A pure fluid amplifier as defined in claim 11 wherein said downstream wall approaches the non-angularly displaced position of said laminar power stream to a preselected spacing therefrom for determining the input impedance characteristics of said control chamber.
Claim 17
Dependent Claim
215 words
A pure fluid amplifier comprising: a. a supply conduit of predetermined parameters and including an emission orifice, said conduit being adapted to produce a laminar fluid stream; b. means for effecting flow of fluid through said supply conduit under a predetermined pressure relative to said parameters so as to project a laminar fluid power stReam from said supply conduit emission orifice; c. at least one receiver aperture spaced a predetermined distance from said supply conduit emission orifice and positioned to normally receive at least a portion of said projected laminar power stream; and d. control means for applying a biasing pressure differential across said power stream for a predetermined portion of its length at least in excess of the width of said supply conduit emission orifice for angularly displacing said power stream, as a proportional function of said biasing pressure differential, while maintaining said power stream laminar at all points in advance of said receiver aperture, said control means including means defining a control chamber including a downstream wall element which approaches the center line of said supply conduit emission orifice to a preselected spacing therefrom which determines the input impedance characteristics of said control chamber, whereby an output signal is received at said receiver which is a proportional function of said biasing pressure differential.
Claim 18
Dependent Claim
215 words
A pure fluid amplifier comprising: a. a supply conduit of predetermined parameters and including an emission orifice, said conduit being adapted to produce a laminar fluid stream; b. means for effecting flow of fluid through said supply conduit under a predetermined pressure relative to said parameters so as to project a laminar fluid power stReam from said supply conduit emission orifice; c. at least one receiver aperture spaced a predetermined distance from said supply conduit emission orifice and positioned to normally receive at least a portion of said projected laminar power stream; and d. control means for applying a biasing pressure differential across said power stream for a predetermined portion of its length at least in excess of the width of said supply conduit emission orifice for angularly displacing said power stream, as a proportional function of said biasing pressure differential, while maintaining said power stream laminar at all points in advance of said receiver aperture, said control means including means defining a control chamber including a downstream wall element which approaches the center line of said supply conduit emission orifice to a preselected spacing therefrom which determines the input impedance characteristics of said control chamber, whereby an output signal is received at said receiver which is a proportional function of said biasing pressure differential.
Claim 19
Dependent Claim
61 words
A pure fluid amplifier as defined in claim 14 wherein said preselected spacing is substantially equal to one half the width of said supply conduit emission orifice such that said power stream is angularly displaced away from said wall element by a positive pressure condition in said control chamber and said preselected spacing determines the input impedance of said control chamber.
Claim 20
Dependent Claim
58 words
A pure fluid amplifier as defined in claim 14 wherein said preselected spacing defines the limit of usable angular displacement of said power stream toward said control chamber and determines the input impedance presented by said control chamber as said power stream is angularly displaced toward said control chamber by a negative pressure condition in said control chamber.
Claim 21
Dependent Claim
29 words
A pure fluid amplifier as defined in claim 16 wherein said preselected spacing is within the range of from 0.2 to 0.35 times the length of said control chamber.
Claim 22
Dependent Claim
44 words
A pure fluid amplifier as defined in claim 16 wherein there is not more than one receiver aperture and the center line of said receiver aperture is laterally offset toward said control chamber from the center line of said emission orifice a predetermined amount.
Claim 23
Dependent Claim
132 words
In a pure fluid amplifier which includes a supply conduit of predetermined parameters with an emission orifice, means for effecting flow of fluid through said supply conduit so as to project a laminar fluid power stream from said emission orifice, and at least one receiver aperture spaced from said emission orifice and positioned to normally receive at least a portion of said projected power stream, a method for influencing said power stream comprising: applying a biasing pressure differential across said power stream for a predetermined portion of its length at least in excess of the width of said supply conduit emission orifice to angularly displace, as a proportional function of said biasing pressure differential, said power stream while maintaining said power stream laminar at all points in advance of said receiver aperture.
Claim 24
Dependent Claim
132 words
In a pure fluid amplifier which includes a supply conduit of predetermined parameters with an emission orifice, means for effecting flow of fluid through said supply conduit so as to project a laminar fluid power stream from said emission orifice, and at least one receiver aperture spaced from said emission orifice and positioned to normally receive at least a portion of said projected power stream, a method for influencing said power stream comprising: applying a biasing pressure differential across said power stream for a predetermined portion of its length at least in excess of the width of said supply conduit emission orifice to angularly displace, as a proportional function of said biasing pressure differential, said power stream while maintaining said power stream laminar at all points in advance of said receiver aperture.
Claim 25
Dependent Claim
36 words
The method defined in claim 19 further comprising: grossly venting a region immediately in advance of said receiver aperture in all directions in a plane perpendicular to the plane of angular displacement of said power stream.
Claim 26
Dependent Claim
44 words
The method defined in claim 19 wherein said biasing pressure differential is applied across said power stream for a distance at least equal to four times the dimension of said supply conduit emission orifice in the plane of angular displacement of said power stream.
Claim 27
Dependent Claim
89 words
The method defined in claim 19 wherein said biasing pressure differential is applied across said power stream by confining said power stream to its plane of angular displacement and imposing a first substantially static pressure condition on one side of said power stream for said predetermined portion of its length while imposing a second substantially static pressure condition to the opposite side of said power stream for said predetermined portion of its length, whereby said power stream is not subjected to impingement by a substantial fluid stream velocity component.
Claim 28
Dependent Claim
204 words
A pure fluid amplifier comprising: a. a supply conduit including an emission orifice for projecting a power stream; b. means for effecting flow of fluid through said supply conduit under a predetermined pressure so as to project said power stream from said supply conduit emission orifice; c. at least one receiver aperture spaced a predetermined distance downstream from said supply conduit emission orifice; d. control means for applying control pressure to said power stream for angularly displacing said power stream in accordance with said control pressure, said control means including means defining a control chamber on at least one side of said power stream and conduit means connecting said control chamber to a source of control pressure signals having a known no-load quiescent output flow volume; and e. means for drawing off fluid from said control chamber in volume substantially equal to said quiescent output fluid flow volume from said source of control pressure signals to match the input operating range of said pure fluid amplifier with the output operating range of said source of control pressure signal so that deviations in said output fluid flow volume from said quiescent volume effect a corresponding change in the control pressure applied to said power stream.
Claim 29
Dependent Claim
204 words
A pure fluid amplifier comprising: a. a supply conduit including an emission orifice for projecting a power stream; b. means for effecting flow of fluid through said supply conduit under a predetermined pressure so as to project said power stream from said supply conduit emission orifice; c. at least one receiver aperture spaced a predetermined distance downstream from said supply conduit emission orifice; d. control means for applying control pressure to said power stream for angularly displacing said power stream in accordance with said control pressure, said control means including means defining a control chamber on at least one side of said power stream and conduit means connecting said control chamber to a source of control pressure signals having a known no-load quiescent output flow volume; and e. means for drawing off fluid from said control chamber in volume substantially equal to said quiescent output fluid flow volume from said source of control pressure signals to match the input operating range of said pure fluid amplifier with the output operating range of said source of control pressure signal so that deviations in said output fluid flow volume from said quiescent volume effect a corresponding change in the control pressure applied to said power stream.
Claim 30
Dependent Claim
25 words
The pure fluid amplifier as defined in claim 23 wherein the side of said power stream opposite from said control chamber is open to atmosphere.
Claim 31
Dependent Claim
21 words
The pure fluid amplifier as defined in claim 23 wherein said source of control pressure signals comprises a momentum-type fluidic device.
Claim 32
Dependent Claim
31 words
The pure fluid amplifier as defined in claim 23 wherein said means for drawing off fluid from said control chamber comprises aspirating means connected to said control chamber through a restriction.
Claim 33
Dependent Claim
24 words
The pure fluid amplifier as defined in claim 26 wherein said aspirating means includes a supply nozzle connected to said source of supply pressure.
Claim 34
Dependent Claim
115 words
The pure fluid amplifier as defined in claim 23 wherein said supply conduit is of predetermined parameters and adapted to produce a laminar fluid stream; said means for effecting flow of fluid through said conduit effects said flow under a predetermined pressure relative to said parameters so as to project a laminar fluid power stream from said emission orifice; and said control means applies said control pressure to said laminar power stream for a predetermined portion of the length of said power stream at least in excess of the width of said emission orifice for angularly displacing said power stream while maintaining said power stream laminar at all points in advance of said receiver aperture.
Claim 35
Dependent Claim
44 words
The pure fluid amplifier as defined in claim 28 wherein there is not more than one receiver aperture and the center line of said receiver aperture is laterally offset toward said control chamber from the center line of said emission orifice a predetermined amount.
Claim 36
Dependent Claim
42 words
The pure fluid amplifier as defined in claim 29 wherein said receiver aperture is laterally offset within the range of from 2 to 3 1/2 times the dimension of said emission orifice in the plane of angular displacement of said power stream.
Claim 37
Dependent Claim
143 words
In a fluid signal amplifying system including a pure fluid amplifier having a control chamber for applying control pressure to a power stream for angularly displacing the power stream, a source of control pressure signals having a known no-load quiescent output flow volume, and conduit means connecting the control chamber of the pure fluid amplifier to the source of control pressure signals, the method for matching the input operating range of the pure fluid amplifier with the output operating range of the source of control pressure signals comprising: drawing off fluid from said control chamber of said pUre fluid amplifier in volume substantially equal to said quiescent output flow volume from said source of control pressure signals so that deviations in said output fluid flow volume from said quiescent volume effect a corresponding change in the control pressure applied to said power stream.
Claim 38
Dependent Claim
143 words
In a fluid signal amplifying system including a pure fluid amplifier having a control chamber for applying control pressure to a power stream for angularly displacing the power stream, a source of control pressure signals having a known no-load quiescent output flow volume, and conduit means connecting the control chamber of the pure fluid amplifier to the source of control pressure signals, the method for matching the input operating range of the pure fluid amplifier with the output operating range of the source of control pressure signals comprising: drawing off fluid from said control chamber of said pUre fluid amplifier in volume substantially equal to said quiescent output flow volume from said source of control pressure signals so that deviations in said output fluid flow volume from said quiescent volume effect a corresponding change in the control pressure applied to said power stream.
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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) | 1977-01-14 | 1977-07-16 | 1978-01-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-01-14 | 1981-07-16 | 1982-01-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-01-14 | 1985-07-16 | 1986-01-15 | $7700.00 | Window Closed / Lapsed |