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| Number | Title | Issue Date |
| 7267290 | Cold-performance fluidic oscillator A fluidic oscillator suitable for use at colder temperatures for generating an exhaust flow in the form of an oscillating spray of fluid droplets has an inlet for pressurized fluid, a pair of power nozzles configured to accelerate the movement of the pressurized flu... | 09/11/2007 |
| 7128082 | Method and system for flow control with fluidic oscillators A system for control of a fluid flow. The system includes an array of fluidic oscillators. Each fluidic oscillator carries an oscillating flow of the fluid and includes a throat, an input port connected to the throat, two control ports connected to the throat and tw... | 10/31/2006 |
| 7096888 | Fluidic pulse generator system A fluidic pulse generator system includes two fluidic diverter valves that are both controlled by a single fluidic pilot valve. The fluidic pilot valve and the two fluidic diverter valves are each adapted to receive a flow of pressurized fluid. The flow of pressuriz... | 08/29/2006 |
| 7080664 | Fluid amplifier with media isolation control valve A fluid amplifier is presented. The fluid amplifier comprises at least one control valve for controlling at least one of a first control fluid flow and a second control fluid flow. That is, the control valve has a movable element for selectively opening and closing ... | 07/25/2006 |
| 7077152 | Microfluidic metering systems and methods Systems and methods for metering microfluidic volumes are provided. A discrete plug may be separated from a larger volume of first fluid by injecting a second fluid, such as a gas, into a channel containing the first fluid. The injection of the second fluid to isola... | 07/18/2006 |
| 7055541 | Method and mechanism for producing suction and periodic excitation flow A method and mechanism of producing a suction and periodic excitation flow. The method includes providing fluid flow from jet port with diameter dl at a controlled input pressure (Pin), directing the flow to a conduit with diameter d2, >d1, allowing additional fluid... | 06/06/2006 |
| 7051754 | Immediate hot water supply device In a hot water distribution system, the water oscillation in hot water supply line maintains hot water line in heated condition by ensuring heat transfer from the water heater to a hot water line executing regenerative heat transfer technique. Fulfillment of longitu... | 05/30/2006 |
| 7044163 | Drag reduction in pipe flow using microbubbles and acoustic energy Methods and apparatus for reducing drag in fluid flow through pipes that utilizes microbubbles and acoustic energy are provided. A gas ejector for microbubble generation in a pipe is provided and includes a pipe comprising a wall having inner and outer diameters and... | 05/16/2006 |
| 6976507 | Apparatus for creating pulsating fluid flow A fluidic oscillator is disclosed, wherein the fluidic oscillator includes a fluid source and a housing coupled to the fluid source. At least one recess is formed within the housing. An insert resides within each at least one recess; the insert provides at least one... | 12/20/2005 |
| 6948244 | Method of molding fluidic oscillator devices Methods of molding fluidic oscillator device having at least a power nozzle for projecting a jet of liquid into an interaction region with an upstream end, opposing side walls, opposing top and bottom walls, and a pair of control ports at the upstream end. The side ... | 09/27/2005 |
| 6805164 | Means for generating oscillating fluid jets having specified flow patterns A fluidic oscillator capable of generating free fluid jets having distinctive, controllable and industrially/commercially useful flow patterns has a switching chamber having an inlet port that allows a pressurized fluid to enter and flow through the oscillator, an e... | 10/19/2004 |
| 6536457 | Fluid and fuel delivery systems reducing pressure fluctuations and engines including such systems Fluid and fuel delivery systems reducing pressure fluctuations and engines including such systems are disclosed. Such systems use a conduit that attenuates pressure fluctuations. Preferably, the conduit attenuates pressure fluctuations by reflecting a por... | 03/25/2003 |
| 6520197 | Continuous laminar fluid mixing in micro-electromechanical systems A micro-electromechanical system and method for continuous laminar fluid mixing. An embodiment of the invention described in the specification includes a mixing channel, a first delivery channel that is connected to the mixing channel, and a second delive... | 02/18/2003 |
| 6497375 | Fluidic nozzle with multiple operating modes A fluidic nozzle having multiple operating modes comprising a fluidic oscillator circuit having an oscillation chamber having an upstream end and a downstream end and a power nozzle at the upstream end for introducing a jet of a liquid (water) into the os... | 12/24/2002 |
| 6435214 | Apparatus for reducing dissipation rate of fluid ejected into boundary layer A method and apparatus for ejecting a second fluid into the near-wall region of the boundary layer of a first fluid, so that the second fluid hugs the wall. This alone reduces drag by modifying the behavior of the near-wall structure, thereby reducing the... | 08/20/2002 |
| 6408866 | Fluidic oscillator, part designed to be incorporated in a fluidic oscillator and method for making such a fluidic oscillator The invention provides a fluidic oscillator that is symmetrical about a longitudinal plane of symmetry (P), comprising an enclosure defining an oscillation chamber and having an inlet opening and an outlet opening through which the fluid flows and which a... | 06/25/2002 |
| 6360763 | Control of flow separation with harmonic forcing and induced separation A diffuser (7) has a step (12) in the surface (9) just upstream of a point where boundary layer separation might occur. An acoustic jet (22) has a nozzle (17) immediately downstream of the step (12); the acoustic jet is driven (25) by a plurality of frequ... | 03/26/2002 |
| 6321790 | Fluid oscillator with an extended slot The invention relates to a fluidic oscillator that is symmetrical about a longitudinal plane of symmetry, the oscillator comprising an opening enabling a fluid to enter into an "oscillation" chamber in the form of a two-dimensional fluid jet oscillating t... | 11/27/2001 |
| 6253782 | Feedback-free fluidic oscillator and method A fluidic oscillator includes a member having an oscillation inducing chamber, at least one source of fluid under pressure, at least a pair of power nozzles connected to the at least one source of fluid under pressure for projecting at least a pair of flu... | 07/03/2001 |
| 6240945 | Method and apparatus for yawing the sprays issued from fluidic oscillators Fluidic oscillators with yawed liquid spray.... | 06/05/2001 |
| 6237636 | Apparatus for reducing dissipation rate of fluid ejected into boundary layer Skin friction reduction on a surface moving relative to a fluid can be obtained by ejecting a polymer-water mixture/solution into the boundary layer. The efficacy of the ejected polymer-water mixture/solution is closely related to polymer dissipation out ... | 05/29/2001 |
| 5983943 | Fluidic oscillator comprising an obstacle with an improved profile The invention relates to a fluidic oscillator which is symmetrical with respective to a longitudinal symmetry plane, comprising a fluid inlet intended to form a bidimensional fluid jet which oscillates transversally with respective to the symmetry plane, ... | 11/16/1999 |
| 5971301 | "Box" oscillator with slot interconnect A low pressure fluidic oscillator having an oscillation chamber having a centerline, and a pair of mutually facing and complementary-shaped sidewalls, planar top and bottom walls, upstream end and downstream end walls. An input power nozzle is formed in t... | 10/26/1999 |
| 5893383 | Fluidic Oscillator A fluidic oscillator is disclosed for providing oscillating flow to outlet ports (172, 173). The fluid oscillator (100) in one embodiment has no fluid communication between a pair of diverging diffuser legs (163, 164) downstream of the upstream edge (169)... | 04/13/1999 |
| 5876187 | Micropumps with fixed valves Micropumps fabricated by micromachining techniques and employing fixed or no-moving-parts valves. As one aspect of the invention, a laser-assisted chemical etching technique is employed for providing smooth-walled, curved configuration necessary to obtain... | 03/02/1999 |
| 5820034 | Cylindrical fluidic circuit A fluidic oscillator comprises a housing having interior walls defining a cylindrical space therein, a fluidic oscillator is mounted in said cylindrical space and has an oscillating chamber having an upstream end and a downstream end. A power nozzle issue... | 10/13/1998 |
| 5819801 | Method and device for producing periodical impulse changes in a fluid flow A device for automatically producing periodical impulse changes in a pressure line is provided with an elastic intermediate member impacted by a control pressure. Pressurizing the exterior of the intermediate member produces a pulsating flow of the fluid ... | 10/13/1998 |
| 5785815 | Process for damping pressure pulsations and apparatus for performing the process Process for damping pressure pulsations and apparatus for performing the process. The process of this invention serves for the damping of pressure pulsations in a fluid, particularly a fiber suspension, flowing in a closed system wherein the pressure puls... | 07/28/1998 |
| 5638867 | Fluidic oscillator having a wide range of flow rates, and a fluid meter including such an oscillator The invention provides a fluidic oscillator which is symmetrical about a longitudinal plane of symmetry (P), the oscillator comprising means for generating an oscillating two-dimensional fluid jet, an obstacle provided in its front portion with a cavity t... | 06/17/1997 |
| 5524660 | Plate-type spray nozzle and method of use A plate-type nozzle and a method of using same to atomize a liquid are disclosed, wherein the nozzle contains at least one nozzle plate having formed on a common facial surface thereof at least one atomization chamber containing: an inlet for a liquid str... | 06/11/1996 |
| 5363704 | Fluidic oscillator and a flow meter including such an oscillator A fluidic oscillator and a flow meter including such a fluidic oscillator comprising a fluid inlet suitable for forming a two-dimensional jet: an obstacle possessing a front portion in the form of a chamber facing the inlet on the path of the jet, said ch... | 11/15/1994 |
| 5362987 | Fluidic generator A fluidic generator (38) employing a fluidic feedback oscillator (12) in combination with a magnetogenerator (41) is described. Oscillational changes in pressure produced within the feedback oscillator are transmitted to opposite sides of a pole cap (74) ... | 11/08/1994 |
| 5265636 | Fluidic rectifier A single-stage and multiple-stage fluidic rectifier wherein each stage has a trunk channel and a reversing channel that joins the trunk channel at a downstream position of the trunk channel, downstream with respect to fluid flowing in a reverse direction ... | 11/30/1993 |
| 5230389 | Fluidic oscillator drill bit A drilling bit having an irrigation system which uses an irrigating fluid. The bit comprises a hollow drill head 14 housing at least one fluidic oscillator 23, 23' which includes an accelerator nozzle 26, 26' supplied by said fluid and opening into a cavi... | 07/27/1993 |
| 5213269 | Low cost, low pressure, feedback passage-free fluidic oscillator with interconnect A fluidic oscillator which is free of feedback passages has an oscillation chamber having a length greater than its width, a pair of mutually facing and complementary-shaped sidewalls, planar top and bottom walls, and first and second end walls. An input ... | 05/25/1993 |
| 5195560 | Adjustable low frequency hydrofluidic oscillator A hydrofluidic oscillator including a momentum exchange fluidic amplifier coupled to a four-way reciprocal valve. The four-way valve is connected to control flow of hydraulic fluid from a source thereof to a using apparatus. The fluidic amplifier is conne... | 03/23/1993 |
| 5181660 | Low cost, low pressure, feedback passage-free fluidic oscillator with stabilizer A fluidic oscillator which is free of feedback passages has an oscillation chamber having a length greater than its width, a pair of mutually facing and complimentary-shaped sidewalls and planar top and bottom walls, and first and second end walls. Stabil... | 01/26/1993 |
| 5165438 | Fluidic oscillator In accordance with an illutrative embodiment of the present invention, a fluidic oscillator includes a transverse vacuum port which extends between the diffuser legs a predetermined distance below the leading edge surface of the splitter. When flow is dow... | 11/24/1992 |
| 5109832 | Method of and apparatus for producing alternating pressure in a therapeutic device A method of and apparatus are disclosed for producing alternating pressure in a theapeutic device used to apply compressive forces to a portion of a human body to enhance venous blood flow and prevent venous thrombosis and pulmonary embolism in surgical p... | 05/05/1992 |
| 5035361 | Fluid dispersal device and method A fluid dispersal device utilizes alternately pulsating vortices to cyclically oscillate a fluid stream transversely of its flow direction in a desired flow pattern. A pair of pulsating fluid streams, which may issue from a fluidic oscillator are projecte... | 07/30/1991 |
