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WO/1997/021004A1 |
The device comprises a housing (1) with a curved side wall, said housing forming a vortex chamber and having an inlet opening (2) and an outlet opening (3), means (15) being provided at the inlet opening (2) for fastening a flow controll...
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WO/1997/005385A1 |
This invention provides a microvalve which is provided with an elastic diaphragm (13) moved vertically in accordance with the variation of pressure, a support base member (11) supporting the elastic diaphragm, retainer base plates (111, ...
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WO/1997/002433A1 |
A micro-valve (1) consists of an electromagnetic drive (2) and a multilayered valve base (17) with layers that are firmly linked together and separately produced. The valve base (17) has at least one armature (18) and a valve closing ele...
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WO/1997/001055A1 |
A method for the manufacture of a microstructure having a top face and a bottom face, at least one hole or cavity therein extending from the top face to the bottom face, and a polymer membrane which extends over a bottom opening of said ...
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WO/1997/001054A1 |
The invention concerns a membrane-type microvalve consisting of a valve chamber and an actuator chamber, the valve chamber consisting of housing (1) with an inlet (3), an outlet (4) and a membrane (2) which is joined to the housing (1) a...
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WO/1996/042000A1 |
A fluidic flow meter comprising a fluidic oscillator having an oscillation chamber, a power nozzle for issuing a jet of fluid into the oscillation chamber, an outlet for issuing fluid from the oscillation chamber. A bendable fiber optic ...
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WO/1996/032200A1 |
A windshield washer system has a nozzle mounted on a vehicle for issuing wash fluid to a windshield and a check valve for a fluid circuit from a supply of wash fluid to the nozzle. The nozzle has a fluid feed tube (50) integrally formed ...
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WO/1996/028664A1 |
A miniature electrofluidic module (10, 310) is disclosed, for receiving one or more fluids and for receiving an electrical connection. In accordance with one aspect of the invention, the module (10, 310) includes a substantially flat flu...
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WO/1996/027742A1 |
Embodiments described herein relate to methods and structures for controlling a valve. One embodiment provides a valve control comprising a first valve fluidly connected with a first fluid conveying conduit and a second fluid conveying c...
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WO/1996/024774A1 |
A method for conditioning a fluid flow from a first area to a second area downstream therefrom, wherein the flow from the first area is directed in a longitudinal direction, the cross-section of flow is increased, said flow is split by m...
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WO/1996/019674A1 |
The invention concerns a device (1) for limiting the volumetric flow in a system through which a pressurized fluid can flow, the system comprising a flow duct (2). The device (1) has a main axis (3a) and a swirl-generating component (4) ...
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WO/1996/019689A2 |
The invention concerns a valve arrangement, in particular for use in pneumatic control systems. Since pneumatically actuated adjusting components have a given leak rate, the control valve (pilot valve) has to remain permanently in the op...
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WO/1996/015376A1 |
A fluidic sound amplification system couples successive laminar proportional amplifiers (3) through acoustic radiation between output (50) and input (2) horns to avoid propagation of null offset signals. A second approach to obviating DC...
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WO/1996/011342A1 |
The invention concerns a micromechanical actuator having a piston which is movable in a channel and on which a pressurizing medium acts from one side from a pressure chamber. The actuator comprises a flat housing which is mounted rigidly...
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WO/1996/008749A2 |
The invention concerns a method of producing a three-dimensional component or group of components, particularly on surfaces of already processed semiconductor chips. The production of three-dimensional features on chip surfaces is based ...
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WO/1996/005457A1 |
A mechanical control valve (10) that can automatically direct the flow of fluid between a first outlet (16) and second outlet (18). The valve has a poppet (28) that allows fluid to flow out of the first outlet (16) when in a first positi...
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WO/1995/035448A1 |
A fluidic oscillator symmetrical with respect to a longitudinal plane of symmetry (P) in which the longitudinal direction of a fluid flow lies. Said oscillator includes a component (26b) for generating a two-dimensional fluid jet oscilla...
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WO/1995/034144A1 |
A vortex chamber fluid pulser (44) selectively produces pressure pulses in fluid flowing therethrough by the alternating insertion and retraction of a flow-disrupting tab (102) into and out of an annular vortex chamber (105) having an in...
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WO/1995/029341A1 |
By means of ducts (3) the main stream only is made to twist, while pressure in the auxiliary stream is partially reduced and the stream is fed along an auxiliary line (8) into a gap (7) at the periphery of the fluid vortex in the main st...
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WO/1995/022696A1 |
A fluid micro-diode for directionally coupling a dosed fluid to another stationary or flowing target fluid contained in a closed system, in particular in the sub-microliter range, is characterised by a planar arrangement of micro-capilla...
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WO/1995/018991A1 |
A process is disclosed for gradually constructing microstructured bodies by lithographic methods, as well as the thus produced microstructured bodies. Radiation-sensitive layers are stacked up to a certain height, each layer is irradiate...
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WO/1995/015873A1 |
A piezoelectric fluid control valve includes an upper metering element (100) and a lower metering element (116). Each metering element (100, 116) has an anchored end affixed to the walls of a chamber (16). The anchored end of the upper m...
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WO/1995/011387A1 |
The invention concerns a device designed to divide or change the direction of a fluid flowing under pressure in a pipe, the device having a built-in element whose height can be adjusted and a rotary-flow chamber which tapers from the tan...
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WO/1995/009988A1 |
The fluid filters and fluid flow regulators are capable of accurately handling substantially continuous fluid flow rates as low as about 0.01 cc/day. The filters and flow regulators are so miniaturized, corrosion-resistant and non-toxic ...
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WO/1995/009989A1 |
The micromachined flow switches are capable of accurately handling substantially continuous fluid flow rates as low as about 0.01 cc/day. The flow switches are so miniaturized, corrosion-resistant and non-toxic that they are suitable for...
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WO/1995/009987A1 |
The fluid flow regulators are capable of accurately handling substantially continuous fluid flow rates as low as about 0.01 cc/day. The regulators are so miniaturized, corrosion-resistant and non-toxic that they are suitable for being im...
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WO/1995/008716A2 |
A valve controlling fluid flow includes a brittle layer (12) of material having a port opening (30, 32) therein and a valve seat (24A-24F) disposed about a perimeter of the port opening (30, 32). The valve seat (24A-24F) is selectively c...
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WO/1995/007425A1 |
A valve of the membrane valve type comprises a valve body with two fluid flow channels (5, 5') separated by a land portion which forms a valve seat (6) having a sealing surface for co-operation with a flexible membrane (7) mounted over a...
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WO/1995/002803A1 |
A fluidic oscillator (1) which is symmetrical about a longitudinal plane of symmetry (P) includes elements (10, 14, 16) for generating an oscillating two-dimensional fluid jet, an obstacle (24) with a cavity (40) impinged upon by the osc...
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WO/1995/000786A1 |
The invention relates to a servo-valve with a tongue-like piezo-ceramic flexible transducer which is firmly clamped at one end and can be moved at the other by the application of an electric voltage from a position blocking an air inlet ...
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WO/1994/029600A1 |
A transducer (10) which provides a regulated pneumatic output as a function of an electric control input includes a housing (16), a gas regulator (22), and a particle trap (51). The housing (16) has a passage (20) therein, the passage (2...
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WO/1994/028318A1 |
The present invention relates to a microvalve usable primarily as a pilot valve in pneumatic controls. The prior art solenoid valves used in this field can be miniaturised only at considerably high cost. The microvalve of the invention c...
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WO/1994/017538A2 |
A diode device (10) containing a microparticle polymer element (12) is disclosed. Also disclosed are mechanical switching devices that employ the microparticle polymer element.
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WO/1994/011640A1 |
A valve used to control the flow of fluid of a mangetorheological fluid, in which the mechanical properties of the magnetorheological fluid are varied by applying a magnet (1, 2, 3), is described. The valve can comprise a magnetoconducti...
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WO/1994/007607A1 |
The present invention provides a simple form of nozzle assembly for use in generating sprays from a fluid, which comprises a first member (11) having one or more nozzle outlets (14), one or more fluid inlets (16) and one or more channels...
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WO/1994/005516A1 |
A method for making a groove (205) of a precise width in a substrate (210). The groove may have any cross-sectional shape. The groove is formed by initially etching the substrate. The groove width (W) is then measured. The measured groov...
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WO/1994/004832A1 |
A micro-miniaturizable valve has a pressure compensating chamber (2), a first semi-active valve (3) arranged between the pressure compensation chamber (2) and a first fluid line (L1) and a second semi-active valve (4) arranged between th...
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WO/1994/000696A1 |
The microvalve of the invention is made up in layers of at least one lower part (11), a central part (12) and an upper part (13). The sealing ring (31) (closing member), the valve plate (29) (pressure equalisation area) and the diaphragm...
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WO/1994/000695A1 |
A magnetostrictive transducer has a magnetostrictive layer (2) arranged on a flexible element, for example a flexible rod (11). The flexible element (11) is deflected by an outer magnetic field. The thin magnetostrictive layer is compose...
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WO/1993/024237A1 |
Apparatus for generating a spray of liquid comprises a nozzle (56) for receiving a flow of liquid and for forming the liquid into a jet, and means (eg. a hydrodynamic whistle 34, 52) for generating vibrations in the jet using energy obta...
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WO/1993/023887A1 |
The combination of a gas depolarized electrochemical battery, i.e., a battery containing at least one cell, with one ore more tiny electrically activated, thermally responsive semiconductor microactuators, i.e., a "valve-on-a-chip", disp...
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WO/1993/022565A1 |
A hydrofluidic oscillator including a momentum exchange fluidic amplifier (10) coupled to a four-way reciprocal valve (12). The four-way valve is connected to control flow of hydraulic fluid from a source (42) thereof to a using apparatu...
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WO/1993/022626A1 |
A fluidic oscillator and a flow meter comprising a means (10, 14, 16) for forming an oscillating two-dimensional fluid jet, and an obstacle (22) having a main cavity (26) on which the oscillating jet impinges, and secondary cavities (34,...
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WO/1993/020351A1 |
A fluid controlling microdevice, such as a micropump or a microvalve, wherein a stepped portion (7) is provided on an intermediate base member (1) so that a height ratio of an upper chamber (8) to a lower chamber (9) which constitute par...
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WO/1993/010385A1 |
The object of the invention is to allow the smallest doses of substances to be supplied and shut off over a variable period of time in a very reliable manner and with stable operation. The new micromechanical valve essentially has three ...
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WO/1993/005885A1 |
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 (13, 14), planar top and bottom walls (141, 142), and...
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WO/1992/022763A1 |
A miniature actuating device (1), is disclosed, with a carrier (13), a diaphragm (11), a hollow space (15) being formed between the carrier (13) and the diaphragm (11) and an insulating layer (12) being arranged between them, and with tw...
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WO/1992/014199A1 |
A flow regulator (10) placed in a fluid path to passively compensate for variations in fluid pressure by deflection or movement. In one embodiment, a silicon micromachined housing (11) has a damper beam (20) cantilevered to the interior ...
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WO/1992/013200A1 |
The proposal is for a multilayer microvalve for switching or controlling fluid flows having an inlet and a shut-off component. The inlet is formed as at least one aperture in a first layer. The shut-off component takes the form of a seco...
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WO/1992/010686A1 |
Substantial alteration of the flow conditions in a fluid stream are effected by the application of controlled disturbances to the boundary of or within the stream by one or more piezoelectric actuators. The actuators have resonance frequ...
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