US3429324A - Fluid operated apparatus - Google Patents
Fluid operated apparatus Download PDFInfo
- Publication number
- US3429324A US3429324A US3429324DA US3429324A US 3429324 A US3429324 A US 3429324A US 3429324D A US3429324D A US 3429324DA US 3429324 A US3429324 A US 3429324A
- Authority
- US
- United States
- Prior art keywords
- fluid
- chamber
- stream
- control
- outlet
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 239000012530 fluid Substances 0.000 title description 137
- 230000003993 interaction Effects 0.000 description 14
- 230000001105 regulatory effect Effects 0.000 description 12
- 238000011144 upstream manufacturing Methods 0.000 description 4
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 235000017276 Salvia Nutrition 0.000 description 2
- 241001072909 Salvia Species 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 2
- KHOITXIGCFIULA-UHFFFAOYSA-N Alophen Chemical compound C1=CC(OC(=O)C)=CC=C1C(C=1N=CC=CC=1)C1=CC=C(OC(C)=O)C=C1 KHOITXIGCFIULA-UHFFFAOYSA-N 0.000 description 1
- 244000186140 Asperula odorata Species 0.000 description 1
- 235000008526 Galium odoratum Nutrition 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15C—FLUID-CIRCUIT ELEMENTS PREDOMINANTLY USED FOR COMPUTING OR CONTROL PURPOSES
- F15C1/00—Circuit elements having no moving parts
- F15C1/08—Boundary-layer devices, e.g. wall-attachment amplifiers coanda effect
- F15C1/10—Boundary-layer devices, e.g. wall-attachment amplifiers coanda effect for digital operation, e.g. to form a logical flip-flop, OR-gate, NOR-gate, AND-gate; Comparators; Pulse generators
-
- G—PHYSICS
- G04—HOROLOGY
- G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
- G04B17/00—Mechanisms for stabilising frequency
- G04B17/005—Regulating mechanisms where the movement is maintained by pneumatic means
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/206—Flow affected by fluid contact, energy field or coanda effect [e.g., pure fluid device or system]
- Y10T137/218—Means to regulate or vary operation of device
- Y10T137/2202—By movable element
- Y10T137/2207—Operating at timed intervals [e.g., to produce pulses]
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/206—Flow affected by fluid contact, energy field or coanda effect [e.g., pure fluid device or system]
- Y10T137/2229—Device including passages having V over T configuration
- Y10T137/2234—And feedback passage[s] or path[s]
Definitions
- a fluid operated apparatus for providing signals at predetermined time intervals is disclosed.
- the apparatus embodies a fluid amplifier that operates a means, such as a two-stage diaphragm :e, for measuring a predetermined volume of fluid which means control the output from the apparatus, the output being a portion of the amplifier fluid stream.
- This invention relates to fluid operated systems and more particularly to a fluid operated apparatus which can provide signals at predetermined time intervals, but is not limited to such applications.
- the fluid operated apparatus of this invention may be used as a timer, analog signal to digital signal converter, or the like. For purposes of simplicity the invention will be described in terms of a timer.
- timing devices In the prior art there are many kinds of timing devices. The most common of these are the electrical, electronic, and mechanical timers. There are, however, inherent disadvantages in each type of prior art timer. Known mechanical timing devices have the disadvantage of requiring many moving parts and springs, which parts require precision fabrication. Wear, friction, and thermal expansion aflects the functioning of such timing devices as well as their accuracy.
- Electrical or electronic timing devices require constant sources of electrical energy. Such sources of energy may not be available and such energy need not be the most desirable type under particular operating conditions. Furthermore, such devices do not have long operating lives.
- a bistable fluid amplifier is employed.
- a fluid stream hereinafter referred to as the power stream
- This pressure distribution is controlled by the wall configuration of the interaction chamber, the power stream energy level, the fluid transport characteristics, the back loading of the amplifier outlet passages, and the flow of control fluid to the boundary layer region.
- the high velocity power stream issuing from the nozzle creates regions of low pressure adjacent the interaction chamber walls and this together with the configuration of the interaction chamber in part cause the power stream to lock-on to one side wall and remain in the locked-on condition without any control fluid flow.
- Control fluid nozzles are provided at the interaction chamber generally at right angles to the power stream.
- the power stream can be deflected to the opposite wall of the interaction chamber by a control fluid flow and lockon thereto as heretofore described and remain there even after the control fluid flow is stopped.
- the apparatus is provided with two outlets or fluid recovery apertures or passages facing the power stream, which outlet passages atent O 3,429,324 Patented Feb.
- Another object of this invention is to provide signals at predetermined time intervals independent of any pressure or other condition changes at the point of utilization of the signals.
- a further object is to provide a precision timer with a minimum of moving parts.
- Still another object is to provide a timer with rapid response characteristics.
- a still further object is to provide a fluid timer, the timing intervals of which can be rapidly and accurately changed over a wide range.
- Still another object is to provide an apparatus for obtaining variable frequency output signals.
- a fluid operated apparatus comprising a source of pressurized fluid, a bistable fluid amplifier of the type having interconnected fluid passages whereby a well defined high energy fluid stream may flow from an inlet aperture to one of two outlet passages, control means for alternately switching the fluid stream from one of the outlet passages to the other, first and second apparatus outlet means, means for alternately directing a first portion of the fluid stream to the first of said apparatus outlet means and then to the second apparatus outlet means in response to said control means, fluid operated means for measuring a predetermined volume of a second portion of the fluid stream at a regulated rate such that said volume will be measured in a predetermined desired interval of time, the control means being responsive to the fluid operated means in such manner that the control means cause said fluid stream to switch to the other of the outlet passages when said volume is measured, and means for resetting the fluid operated means.
- FIGURE 1 is a diagrammatic illustration of the fluid apparatus of this invention.
- FIGURE 2 is a fragmentary plan view illustrating another embodiment of this invention.
- FIGURE 3 is a fragmentary cross sectional view illustrating another means for regulating fluid flow.
- FIGURE 4 is a fragmentary cross sectional view illustrating still another means for regulating fluid flow.
- the apparatus of this invention is suitable for use with either compressible fluids such as air, nitrogen or other gases, or incompressible fluids such as water or other liquids. This invention is not limited to any particular fluid.
- a bistable fluid amplifier 10 having interconnected fluid passages whereby a pressurized fluid may flow from a suitable source, not shown, through inlet aperture 11 and then through power or inlet nozzle 12.
- the pressurized fluid emerges from nozzle 12 as a well defined high energy power stream which enters interaction chamber 14 and passes to either of two amplifier outlet passages 16 and 18.
- Control fluid nozzles 20 and 22 are provided at the interaction chamber.
- the walls of the interaction chamber of a bistable fluid amplifier are formed, in a manner well known to one familiar with the art, so that the power stream is caused to lock-on to one side wall and remain in the locked-on condition without any control fluid flow.
- the power stream can be deflected to the opposite Wall of the interaction chamber by a control fluid flow and remain locked-on even after the control fluid flow is stopped.
- vents or bleeds 21 and 23 are provided in connection with outlet passages 16 and 18 respectively, to permit entrainment flow for the power stream in a manner well known to one familiar with the art.
- a pair of two-stage diaphragm valves 24 and 26 are shown connected to fluid amplifier 10.
- the first stage of valve 24 comprises pressurizing chamber 28 and fluid flow control chamber 30. Diaphragm 32 separates these two chambers.
- the second stage of valve 24 comprises pressurizing chamber 34 and fluid flow control chamber 36. Chambers 34 and 36 are separated by diaphragm 38.
- Control chamber 30 is connected to pressurizing chamber 34 by means of port or opening 40, while control chamber 36 is connected to control nozzle 22 by means of member or tube 42.
- Control chambers 30 and 36 are open to ambient by means of vent ports 44 and 46 respectively.
- Pressurizing chamber 28 is connected to amplifier outlet passage 16 by means of members or tubes 48 and 50, while pressurizing chamber 34 is also connected to passage 16 by tubes 48 and 50 together with members or tubes 52 and control valve 54.
- the first stage of two-stage diaphragm valve 26 comprises pressurizing chamber 56 and fluid flow control chamber 58, which chambers are separated by means of diaphragm 60.
- the second stage of valve 26 comprises pressurizing chamber 62 and fluid flow control chamber 64, which chambers are separated by means of diaphragm 66.
- Control chamber 58 is connected to pressurizing chamber 62 by means of port or opening 68, while control chamber 64 is connected to control nozzle by means of member or tube 70.
- Control chambers 58 and 64 are open to ambient by means of vent ports 72 and 74 respectively.
- Pressurizing chamber 56 is connected to amplifier outlet passage 18 by means of members or tubes 76 and 78, while pressurizing chamber 62 is also connected to passage 18 by tubes 76 and 78 together with members or tubes 80 and control valve 82.
- Timer outlets 84 and 86 Signals from the timer are available at timer outlets 84 and 86 as hereinafter described.
- the apparatus of this invention has been described having a pair of two stage diaphragm valves, the first stage of either or both of these valves may be replaced by a piston device, ball valve, or the like, while the second stage of either or both of these valves may be replaced by a piston device.
- the apparatus may also employ single-stage diaphragm valves, however, such an apparatus will have less sensitivity and will require greater physical size for the pressurizing chamber.
- the operation of the timer of this invention is as follows.
- a source of pressurized fluid such as compressed air for example
- fluid amplifier inlet 11 When a source of pressurized fluid, such as compressed air for example, is connected to fluid amplifier inlet 11, a well defined high energy power stream emerges from nozzle 12 and locks-on to either of the outer walls of the inverted V formed by outlet passages 16 and 18, specifically the left wall of outlet passage 16 or the right wall of outlet passage 18.
- the power stream will lock-on the left wall of outlet passage 16 and flow in tube 48.
- a portion of this stream will pass through tube 50 and enter pressurizing chamber 28 of the first stage of two stage diaphragm valve 24. This portion of the stream will accumulate in chamber 28 causing diaphragm 32 to expand.
- a second portion of this stream will pass through tube 52 and control valve 54, and enter pressurizing chamber 34.
- the amount of the stream that enter chamber 34 is at least in part controlled by the setting of control valve 54.
- any fluid that enters chamber 34 will be exhausted through opening 40 and vent port 44 to ambient, and none will accumulate in chamber 34.
- diaphragm 32 will continue to expand until opening 40 is closed off whereupon that portion of the stream which passes through control valve 54 will begin to accumulate in pressurizing chamber 34 since it can no longer be exhausted.
- diaphragm 38 will expand until the opening of tube 42 is closed 0E.
- This pressure gradient is similar to that which could be created if an exterior source of pressurized control fluid would be connected to a control nozzle.
- Such a pressure gradient causes the power stream to be deflected to the opposite wall.
- the power stream is deflected and caused to lock-on to the right wall of outlet passage 18. At this point the power stream no longer flows in outlet passage 16, rather flows in outlet passage 18.
- valve 24 is reset and ready to begin the cycle over again when the stream is thereafter deflected to lock-on to the right wall of passage 16.
- Timer outlets 84 and 86 are connected to utilization or sensing devices, such as diaphragm controlled valves, other fluid amplifiers, piston operated devices, or any mechanical pressure operated devices.
- a first timing interval is obtained by the sum of the periods of time necessary to accumulate a first volume of fluid in the pressurizing chamber 28 and then to accumulate a second volume of fluid in pressurizing chamber 34, of valve 24.
- the first volume is that required to expand diaphragm 32 to the point of where it closes off opening 40
- the second volume is that required to expand diaphragm 38 to the point where it closes off the opening to tube 42.
- a second timing interval is similarly obtained by the functioning of valves 26 and 82.
- valves 24 and 54 need not be the same as that controlled by valves 26 and 82, since the intervals of time may be regulated by control valves 54 and 82, and since the intervals of time are also a function of the characteristics of valves 24 and 26, such as chamber volumes, diaphragrns, and the like.
- the utilization device which is connected to the timer outlets must provide suflicient load or resistance to result in a pressure in chambers 28 and 56 adequate for the operation of the respective diaphragm valves.
- the timer of FIGURE 1 will be sensitive to load changes, that is the time intervals will be affected by pressure or other condition changes at the point of utilization. Although the time intervals will remain con stant for any given load, the timer can nevertheless be made independent of any pressure or other condition changes at the point of utilization by providing a feedback isolator 88 upstream of the timer outlets 84 and 86, as illustrated in FIGURE 2. Such a feedback isolator maintains the conditions of the upstream fluid stream constant and permits a fluid stream to flow toward the utilization device while dissipating any downstream feedback or disturbance.
- the feedback isolator comprises a pair of emitter nozzles 90 and 92, a pair of collectors 94 and 96 aligned with their respective emitter nozzles in a stream intercepting relationship, and a constant pressure chamber 98 intermediate said nozzles and said collectors, said chamber being vented to ambient.
- the fluid operated device of this invention can be employed as an analog signal to digital signal converter in an apparatus such as a digital computer.
- the apparatus illustrated can be used as an analog to digital converter by maintaining the settings of control valves 54 and 82 constant while obtaining variable frequency output signals from the apparatus at outlets 84 and 86 solely by varying the input pressure to inlet 11.
- the settings of control valves 54 and 82 are maintained constant to permit the operation of diaphragm valves 24 and 26, and consequently the timing intervals of the apparatus, to be dependent solely on the upstream pressure.
- variable frequency output signals can be obtained by changing the load or downstream resistance while maintaining a constant pressure to inlet 11 and constant settings of valves 54 and 82.
- FIGURE 3 there is illustrated a constricted tube 100 which is suitable for replacing control valves 54 and 82 to maintain the operation of the diaphragm valves dependent solely on the upstream pressure as hereinabove described.
- an orifice 102 illustrated in FIGURE 4, may be substituted for control valves 54 and 82 for the same purpose.
- the apparatus of this invention has been described with one fluid amplifier, a plurality of amplifiers can be staged or connected so that the output of one diaphragm valve is fed to a control fluid nozzle of a second amplifier, and so on, with the output of the last diaphragm valve being connected to the control fluid nozzle of the first amplifier, thereby providing an apparatus having a cycle of more than two time intervals.
- a fluid operated apparatus for providing signals at predetermined time intervals comprising a fluid amplifier of the type having interconnected fluid passages whereby a well defined, high energy fluid stream may flow from an inlet aperture to one of two outlet passages, control means for alternately switching the fluid stream from one of said outlet passages to other of said outlet passages, first and second apparatus outlet means, means for alternately directing a first portion of said fluid stream to the first of said apparatus outlet means and then to the second of said apparatus outlet means in response to said control means, fluid operated means for measuring a predetermined volume of a second portion of said fluid stream at a regulated rate such that said volume will be measured in a predetermined desired interval of time, said control means being responsive to said fluid operated means such that said control means cause said fluid stream to switch to the other of said outlet passages when said volume is measured, and means for resetting said fluid operated means.
- said fluid amplifier is a bistable fluid amplifier.
- a fluid operated apparatus for providing signals at predetermined time intervals comprising a bistable fluid amplifier of the type having interconnected fluid passages whereby a well defined, high energy fluid stream may flow from an inlet aperture to one of two outlet passages, first control means for alternately switching the fluid stream from one of said outlet passages to the other of said outlet passages, first and second apparatus outlet means, means for alternately directing a first portion of said fluid stream to the first of said apparatus outlet means and then to the second of said apparatus outlet means in response to said first control means, a diaphragm valve for measuring a predetermined volume of a second portion of said fluid stream, second control means for regulating the rate of flow of at least a portion of said second portion of said fluid stream such that said predetermined volume will be measured in a predetermined desired period of time, said first control means being responsive to said diaphragm valve such that said first control means cause said fluid stream to switch to the other of said outlet passages when said volume is meas ured, and means for resetting said diaphragm
- the apparatus of claim 8 further comprising a feedback isolator intermediate said amplifier outlet passages and said first and second apparatus outlet means.
- a fluid operated apparatus for providing signals at predetermined time intervals comprising a bistable fluid amplifier of the type having interconnected fluid passages whereby a well defined, high energy fluid stream may flow from an inlet aperture to one of two outlet passages,
- first and second control means for alternately switching the fluid stream from one of said outlet passages to the other of said outlet passages
- a first two-stage diaphragm valve having first and second stage pressurizing chambers, said valve being connected intermediate said one of said outlet passages and said first control means such that a second portion of said fluid stream flows to each of said pressurizing chambers,
- first control valve connected intermediate said one of said outlet passages and said second stage pressurizing chamber, said first control means being responsive to said first diaphragm valve such that said fluid stream is switched to said other of said outlet passages in a predetermined desired first interval of time
- a second two-stage diaphragm valve having first and second stage pressurizing chambers, said valve being connected intermediate said other of said outlet passages and said second control means such that said second portion of said fluid stream flows to each of said pressurizing chambers of said second two-stage diaphragm valve when said fluid stream is switched to said other of said outlet passages,
- first fluid flow regulating means connected intermediate said one of said outlet passages and said second stage pressurizing chamber
- first apparatus outlet means connected intermediate said one of said outlet passages and said first stage pressurizing chamber
- a second two-stage diaphragm valve having third and fourth stage pressurizing chambers and third and fourth stage fluid flow control chambers, said third stage fluid flow control chamber being connected to said fourth stage pressurizing chamber and also being vented to ambient, said fourth stage fluid flow control chamber also being vented to ambient,
- said apparatus pr viding signals alternately at each of said first and second apparatus outlet means at predetermined desired intervals of time, said intervals of time being at least in part controlled by said first and second fluid flow regulating means.
- the apparatus of claim 15 further comprising a feedback isolator intermediate said amplifier outlet pasfeedback isolator intermediate said amplifier outlet passages and said first and second apparatus outlet means.
- a fluid operated apparatus for providing signals at predetermined time intervals comprising a bistable fluid amplifier comprising a plurality of interconnected fluid passages whereby a well defined, high References Cited UNITED STATES PATENTS 2,984,218 5/1961 Christianson 137-82 X energy fluid stream may flow from an inlet aperture 3 117 593 1/1964 Sewer 137 81 5 X to one of two outlet passages, 3150674 9/1964 0 "i 82 first and second control means for alternately switch- Onnaug t ing said fluid stream from one of said outlet pas- 3159168 12/1964 Reader 137*81'5 sages to the other of said outlet passages, 3181547 5/1965 Bennett 137 82 a first two-stage diaphragm valve having first and sec- $185,166 5/1965 Horton et a1 137 81-5 ond stage pressurizing chambers and first and second 3,203,448 9/ 1965 WOOdWard 1'5 X stage fluid flow control
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Physics & Mathematics (AREA)
- Reciprocating Pumps (AREA)
- Exhaust Gas After Treatment (AREA)
- Fluid-Driven Valves (AREA)
- Measuring Volume Flow (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US43309565A | 1965-02-16 | 1965-02-16 |
Publications (1)
Publication Number | Publication Date |
---|---|
US3429324A true US3429324A (en) | 1969-02-25 |
Family
ID=23718835
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US3429324D Expired - Lifetime US3429324A (en) | 1965-02-16 | 1965-02-16 | Fluid operated apparatus |
Country Status (5)
Country | Link |
---|---|
US (1) | US3429324A (xx) |
DE (2) | DE1523470A1 (xx) |
ES (1) | ES322822A1 (xx) |
GB (1) | GB1140192A (xx) |
NL (1) | NL6601449A (xx) |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3626963A (en) * | 1970-02-04 | 1971-12-14 | United Aircraft Corp | Fluid mixer utilizing fluidic timer actuating fluidic amplifier valves |
US3633619A (en) * | 1969-04-01 | 1972-01-11 | Corning Glass Works | Bernoulli effect fluid pressure convertor, switch, amplifier and the like |
US3659598A (en) * | 1969-06-17 | 1972-05-02 | Gen Medical Corp | Respirator with fluid amplifiers with fluid timer |
US3682189A (en) * | 1970-07-13 | 1972-08-08 | Zigmas J Lapinas | Fluidic oscillator |
US3698413A (en) * | 1969-09-15 | 1972-10-17 | Bendix Corp | Fluidic fluid metering system |
US3705595A (en) * | 1971-01-25 | 1972-12-12 | Johnson Service Co | Fluidic amplifier or modulator with high impedance signal source means |
US3717166A (en) * | 1970-05-15 | 1973-02-20 | Plessey Handel Investment Ag | Pure fluidic devices |
US20060024180A1 (en) * | 2004-07-28 | 2006-02-02 | Lane Glenn H | Fluidic compressor |
Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2984218A (en) * | 1958-07-29 | 1961-05-16 | Gen Electric | Fluid pressure modulating servo valve |
US3117593A (en) * | 1962-04-23 | 1964-01-14 | Sperry Rand Corp | Multi-frequency fluid oscillator |
US3150674A (en) * | 1961-12-28 | 1964-09-29 | Robertshaw Controls Co | Pneumatic thyratrons |
US3159168A (en) * | 1962-02-16 | 1964-12-01 | Sperry Rand Corp | Pneumatic clock |
US3181547A (en) * | 1962-01-22 | 1965-05-04 | Moore Products Co | Pneumatic transmitters |
US3185166A (en) * | 1960-04-08 | 1965-05-25 | Billy M Horton | Fluid oscillator |
US3208448A (en) * | 1962-02-02 | 1965-09-28 | Kenneth E Woodward | Artificial heart pump circulation system |
US3217727A (en) * | 1963-09-10 | 1965-11-16 | Chris E Spyropoulos | Pneumatic relaxation oscillator |
US3232305A (en) * | 1963-11-14 | 1966-02-01 | Sperry Rand Corp | Fluid logic apparatus |
US3270758A (en) * | 1963-04-22 | 1966-09-06 | Sperry Rand Corp | Fluid amplifiers |
-
1965
- 1965-02-16 US US3429324D patent/US3429324A/en not_active Expired - Lifetime
-
1966
- 1966-02-04 NL NL6601449A patent/NL6601449A/xx unknown
- 1966-02-07 GB GB528666A patent/GB1140192A/en not_active Expired
- 1966-02-09 ES ES0322822A patent/ES322822A1/es not_active Expired
- 1966-02-10 DE DE19661523470 patent/DE1523470A1/de active Pending
- 1966-02-10 DE DEC14149U patent/DE1973187U/de not_active Expired
Patent Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2984218A (en) * | 1958-07-29 | 1961-05-16 | Gen Electric | Fluid pressure modulating servo valve |
US3185166A (en) * | 1960-04-08 | 1965-05-25 | Billy M Horton | Fluid oscillator |
US3150674A (en) * | 1961-12-28 | 1964-09-29 | Robertshaw Controls Co | Pneumatic thyratrons |
US3181547A (en) * | 1962-01-22 | 1965-05-04 | Moore Products Co | Pneumatic transmitters |
US3208448A (en) * | 1962-02-02 | 1965-09-28 | Kenneth E Woodward | Artificial heart pump circulation system |
US3159168A (en) * | 1962-02-16 | 1964-12-01 | Sperry Rand Corp | Pneumatic clock |
US3117593A (en) * | 1962-04-23 | 1964-01-14 | Sperry Rand Corp | Multi-frequency fluid oscillator |
US3270758A (en) * | 1963-04-22 | 1966-09-06 | Sperry Rand Corp | Fluid amplifiers |
US3217727A (en) * | 1963-09-10 | 1965-11-16 | Chris E Spyropoulos | Pneumatic relaxation oscillator |
US3232305A (en) * | 1963-11-14 | 1966-02-01 | Sperry Rand Corp | Fluid logic apparatus |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3633619A (en) * | 1969-04-01 | 1972-01-11 | Corning Glass Works | Bernoulli effect fluid pressure convertor, switch, amplifier and the like |
US3659598A (en) * | 1969-06-17 | 1972-05-02 | Gen Medical Corp | Respirator with fluid amplifiers with fluid timer |
US3698413A (en) * | 1969-09-15 | 1972-10-17 | Bendix Corp | Fluidic fluid metering system |
US3626963A (en) * | 1970-02-04 | 1971-12-14 | United Aircraft Corp | Fluid mixer utilizing fluidic timer actuating fluidic amplifier valves |
US3717166A (en) * | 1970-05-15 | 1973-02-20 | Plessey Handel Investment Ag | Pure fluidic devices |
US3682189A (en) * | 1970-07-13 | 1972-08-08 | Zigmas J Lapinas | Fluidic oscillator |
US3705595A (en) * | 1971-01-25 | 1972-12-12 | Johnson Service Co | Fluidic amplifier or modulator with high impedance signal source means |
US20060024180A1 (en) * | 2004-07-28 | 2006-02-02 | Lane Glenn H | Fluidic compressor |
US7413418B2 (en) * | 2004-07-28 | 2008-08-19 | Honeywell International, Inc. | Fluidic compressor |
Also Published As
Publication number | Publication date |
---|---|
ES322822A1 (es) | 1966-11-16 |
NL6601449A (xx) | 1966-08-17 |
DE1973187U (de) | 1967-11-23 |
DE1523470A1 (de) | 1969-10-23 |
GB1140192A (en) | 1969-01-15 |
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