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Patent Searching and Data


Matches 551 - 600 out of 2,914

Document Document Title
WO/1998/005871A1
The valve arrangement comprises two silicon wafers placed on top of each other. The downstream wafer contains a majority of etched through openings (6). The upstream wafer (3) is equipped with a majority a swing valves (7). The latter ar...  
WO/1997/049926A2
A microvalve incorporating the invention includes a valve plate with a planar base and an extending pedestal, the pedestal having an upper valve surface. The planar base is enclosed by a rim which creates a valve recess between the rim a...  
WO/1997/046820A1
A microvalve comprises a valve housing (20, 24) defining an interior space, a fluid entrance (14) and a fluid exit (15), a selectively energizable magnet (21), an armature (10) disposed within the interior space of the housing and moveab...  
WO/1997/047013A1
A device and method for controlling small flows of gas for satellite orientation thrusters comprises a photoetched silicon body (10) etched to provide one or more particular flow paths, and optionally filters, wherein the flow path is de...  
WO/1997/045663A1
A bimorph piezoelectric flapper element (12) is mounted by one end in a valve casing (11) so that it extends into a valve chamber (10) as a cantilever. It tapers to the unsupported end on which a fluorosilicone blocking plate (16) is mou...  
WO/1997/045644A1
This invention provides a valveless method and apparatus for high speed switching of liquid flow between intersecting michrochannels. Liquid flow is controlled by manipulating external driving pressures. The switch comprises threee inter...  
WO/1997/044132A1
A housing for a (silicon) micromachined body (22) (for instance an injector valve system, a detector or a stream selector for a gas chromatograph instrument) is field assemblable and disassemblable and mechanically self-aligning so that ...  
WO/1997/044138A1
A zero sack volume fluid flow regulator generates upstream turbulence for control of fluid flow, fluid spray distribution and fluid droplet size. The fluid flow regulator includes a seal layer (5) for selectively controlling fluid flow. ...  
WO/1997/040292A1
A variator assembly comprises a variator of the toroidal-race rolling-traction type using double-acting pistons to control the rollers and differential end load pressure to load the variator, and control means operative to vary the diffe...  
WO/1997/039830A1
A vehicle nozzle system having a source of washer liquid (14) under pressure, a fluidic oscillator (11) comprising a housing and a fluidic insert having a power nozzle, an oscillation chamber (oc) having an upstream end (pn) coupled to t...  
WO/1997/035116A1
The invention relates to a fluidic oscillator (20) which is symmetrical with respective to a longitudinal symmetry plane (P), comprising a fluid inlet (22) intended to form a bidimensional fluid jet which oscillates transversally with re...  
WO/1997/033094A1
A micro-machined membrane valve including a substrate (34, 44, 54) with a through-hole (35, 45, 55) and a flexible membrane (43, 42, 52) covering the through-hole in such a way that a liquid is allowed to flow therethrough when the fluid...  
WO/1997/029538A1
The invention concerns a bistable electrostatic actuator with pneumatic or liquid coupling. The electrostatic membrane actuator has enclosed metallic electrodes (21, 22; 23). It can be used for a microvalve or a micropump. Said actuator ...  
WO/1997/028376A1
An actuator and a method of controlling the actuator are disclosed. In one embodiment, the actuator is a valve (18) comprising a first port (26) and a second port (28) fluidly connected with the first port such that fluid communicates be...  
WO/1997/028375A1
A monitoring and control device for alternately supplying a fluid to a plurality of receiving members (2) is disclosed. The device includes at least two flow control members (4, 6) in mutual fluid communication, and is characterised in t...  
WO/1997/027324A1
The invention provides a cassette (100) for conducting reactions therein comprising one or more fluid exchange channels (141), a supply chamber (150), a reaction chamber (160) and a waste chamber (170).  
WO/1997/022824A1
The invention relates to a fluid valve, in particular for switching or controlling relatively large volume flows, preferably using a piezoelectric drive. The object of the invention, to develop a valve of this kind, is attained in that t...  
WO/1997/022825A1
A microfluidic delivery system (20) and microfluidic system (100) control flows of a liquid or a gas through elongated capillaries (62, 126) that are enclosed along at least one surface by a layer (42, 114) of a malleable material. An el...  
WO/1997/021930A1
A microvalve for regulating a fluid flow has a valve base body (10) with a valve opening (12; 40) and a sealing edge, and a valve plate (14) with fluid passages (16; 60). The valve plate (14) is movable in the perpendicular direction in ...  
WO/1997/021090A1
This invention relates to methods and apparatus for performing microanalytic and microsynthetic analyses and procedures. The invention provides a microsystem platform and a micromanipulation device for manipulating the platform that util...  
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...  
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, ...  
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...  
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 ...  
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...  
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 ...  
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 ...  
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...  
WO1996019689A3  
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...  
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...  
WO1996008749A3  
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) ...  
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...  
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...  
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...  
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 ...  
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...  
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...  
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...  
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...  
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...  
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...  
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...  
WO1995008716A3  
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...  
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 ...  
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...  
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...  
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...  

Matches 551 - 600 out of 2,914