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Patent Searching and Data


Matches 551 - 600 out of 1,740

Document Document Title
WO/2000/079131A1
A method for eliminating gas bubble blockage of current flow during operation of an electrokinetic pump. By making use of the ability to modify the surface charge on the porous dielectric medium used in electrokinetic pumps, it becomes p...  
WO/2000/075512A1
The invention relates to a pump cylinder in which a pump plunger is located which divides the cylinder into a front and a rear part. In the front part, said pump cylinder has a connection for sucking in the medium to be conveyed. The rea...  
WO2000045051A3
A micro-pump pumps either electrically conductive or non-conductive liquids through channels of the micro-pump and/or micro-devices. A conductive or non-conductive liquid, depending on the specific application of the present invention, i...  
WO/2000/073655A1
The invention concerns a device for diffusing drops of at least one liquid, comprising at least a liquid displacement path defined by a series of pairs of very close surfaces (4a, 6a, to 14a) for retaining and moving the liquid from one ...  
WO/2000/065231A1
The invention relates to a piston pump (10) for a hydraulic vehicle brake system having, in particular, slip-control. The invention provides that the piston (16) is configured as a hollow piston and is sealed by a piston sealing (28) whi...  
WO/2000/065234A1
The invention relates to a piston pump (10) for a hydraulic, slip-controlled vehicle braking system. The aim of the invention is to reduce the length of said piston pump (10). To this end, a piston (16) of the piston pump (10) is configu...  
WO/2000/064717A1
The invention relates to a piston pump (10) for a slip-controlled, hydraulic vehicle brake system. The aim of the invention is to provide a piston pump (10) which comprises a short construction. To this end, a piston (16) of the piston p...  
WO/2000/056443A1
The invention relates to a device for applying at least one micro-droplet on a substrate (2), comprising a dosing head body (8) having at least one dosing hole (14). A drive device (4) is provided to impinge upon the dosing head (8) and ...  
WO/2000/056442A1
The invention relates to a fluids manipulation device comprising a substrate (20) having a first surface (21) and a second surface (23). A plurality of fluid inlets (28), preferably media reservoirs, following a first pattern is formed o...  
WO/2000/057173A1
A fluidic driver system for use with a cartridge in a microfluidic analysis instrument. The driver system includes linear pumps, differential pumps, fluidic capacitive filters, and face seal assemblies which act to provide a consistent a...  
WO/2000/055502A1
An electrokinetic high pressure hydraulic pump for manipulating fluids in capillary-based systems includes (i) a microchannel having a fluid inlet and outlet and a porous dielectric material disposed in said microchannel; (ii) an electro...  
WO2000021659A9
A multilayered microfluidic device having a substantially monolithic structure is formed by sintering together a plurality of green-sheet layers. The substantially monolithic structure has an inlet port for receiving fluid, an outlet por...  
WO/2000/051221A1
The invention relates to a device (1) for generating electrical power, comprising an inertia mass (3) which is placed in a frame or a housing (2) in such a way that it can oscillate and a first generator (4) which is connected thereto an...  
WO/2000/045051A2
A micro-pump pumps either electrically conductive or non-conductive liquids through channels of the micro-pump and/or micro-devices. A conductive or non-conductive liquid, depending on the specific application of the present invention, i...  
WO/2000/034654A1
The present invention relates to a method for pumping gas-liquid mixtures and to a piston pump characterised in that a gas-liquid mixture is fed into a working chamber during the suction stroke and the compression stroke of the gas, wher...  
WO2000007735A3
Disclosed are micromachined acoustic ejector (12) for generating a jet stream (24) using a Helmholtz resonator (14), applications for the ejector (12) in microflight, active heat sinking and fluid pumping, and methods of manufacturing th...  
WO/2000/021659A1
A multilayered microfluidic device having a substantially monolithic structure is formed by sintering together a plurality of green-sheet layers. The substantially monolithic structure has an inlet port for receiving fluid, an outlet por...  
WO/2000/007735A2
Disclosed are micromachined acoustic ejector (12) for generating a jet stream (24) using a Helmholtz resonator (14), applications for the ejector (12) in microflight, active heat sinking and fluid pumping, and methods of manufacturing th...  
WO/2000/006890A1
A pump for pumping fluid including: a pump body (7) having a pumping chamber (14) therein; an inlet control means (23) adapted to be in fluid communication with a fluid supply means for supplying fluid to the pump; and an outlet control ...  
WO/2000/006900A1
An improved vibration-actuated pump (39) for a vibrating machine (11) includes operative ends (39a, 39b), each of which has an end block (51, 59) with a fluid path therethrough comprised of a fluid inlet (53, 61), fluid outlet (55, 63) a...  
WO1999050524A3
A positive-displacement pump (102) includes multiple pumping elements (355, 356). Each pumping element having a pressure vessel (356) with a first (372) and a second (370) chamber and a separating member (362) disposed between the first ...  
WO/1999/055283A1
In a spa water circulation system, the spa (200) including wall structure (201) facing toward a water reception zone (202) and comprising a plurality of water pumps (203) associated with the wall structure, the pumps spaced about the zon...  
WO/1999/050524A2
A positive-displacement pump (102) includes multiple pumping elements (355, 356). Each pumping element having a pressure vessel (356) with a first (372) and a second (370) chamber and a separating member (362) disposed between the first ...  
WO/1999/049173A1
A rotating diverter (108) for isolating fluid in a well (30) from other fluid above the well (30) is provided. The rotating diverter (108) includes a housing body (162) which has a bore (168) running through it. A retrievable spindle ass...  
WO/1999/049172A1
A system (10) for drilling a subsea well (30) from a rig (20) through a subsea wellhead below the rig (20) includes a wellhead stack (37) which is mounted on the subsea wellhead. The wellhead stack (37) comprises at least a subsea blowou...  
WO/1999/037400A1
The invention relates to a microdosing device which does not have a volume sensor. The inventive device comprises a pressure chamber (24) which is at least partially limited by a displacement element (10), and an actuating device (30; 60...  
WO/1999/034115A1
A pump including a main body (100) having a compression chamber (140) compressing a fluid or gas applied through an intake (111), and then forcing it out through an outlet (121); a plate (210) formed within the main body (100); conical p...  
WO/1999/024744A1
A micromachined fluid handling device (600) includes a valve (138) made of reinforced parylene. A heater (440) heats a fluid to expand a thermopneumatic fluid (442). The heater (440) is formed on unsupported silicon nitride to provide a ...  
WO/1999/016162A1
The present invention generally provides a micropump (100) that utilizes electro-osmotic pumping of fluid in one channel or region (106) to generate a pressure based flow of material in a connected channel (104), where the connected chan...  
WO/1999/004140A1
A volumetric-displacement-maximizing device includes a molded slider (12) bidirectionally movable within an elongate cavity (14) formed within a molded body (16). The body (16) also includes a port structure (18) with an output port (18a...  
WO/1998/051999A1
A print array (240) incorporates reservoir(s) (412A, 412B, 412C), in a reservoir layer (410), microchannels (422A) in a distribution layer (420), and electrohydrodynamic pumps (434) having a pair of electrodes (436) for selectively dispe...  
WO/1998/052034A1
Pulse-free flow, for instance for capillary chromatography, is provided by a pump comprised of a length of heat transmissive tubing filled with a liquid that undergoes thermal expansion upon heating, in conjunction with a heating device ...  
WO/1998/050787A1
The invention provides an electrode-based pump (4) having a source of pumped fluid (1), a conduit channel (2A) of capillary dimensions connected via a first end to the pumped fluid source and having an outlet at a second end, a piston ch...  
WO/1998/044262A1
The present invention relates to jet blowing techniques and is characterized in that, after the required pressure value of a gas medium at the input of a jet blower is obtained, the ratio value of the feeding pressure of the liquid mediu...  
WO/1998/042981A1
The invention relates to a combined wind and solar power installation with particularly high availability. In accordance with the invention, an operating shaft is driven by both a vertically turning wind rotor and by an electric motor fe...  
WO/1998/036832A1
The invention relates to a microdosing device comprising a pressure chamber (24) which is at least partly delimited by a displacer (10), an actuating device (30) for actuating the displacer (10), whereby actuation of said displacer (10) ...  
WO1998016739A3  
WO/1998/024544A1
Methods of manufacture and devices for performing active biological operations utilize laminated structures (30, 110). In the preferred embodiment, a first planar sample support (50, 72, 104, 122) includes at least one sample through hol...  
WO/1998/016739A2
A fluid displacement system comprising a pressure vessel (2), an expansion vessel (4), first and second tubes (6, 8) being each in flow communication with the two vessels, fluid contained within the system, and an energy source (30) of g...  
WO/1998/000705A1
A channel (140) is divised into portions (142, 144). The sidewalls of each channel portion (142, 144) have surface charges of opposite polarity. The two channel portions (142, 144) are physically connected together by a salt bridge (133)...  
WO/1997/043629A1
The invention provides methods of performing a synthetic process in a liquid distribution system (300, 310 and 320) having reaction cells (in 320), by pumping at least one reagent into a reaction cell using an electrode-based pump (360).  
WO/1997/040273A1
The stator, rotor and/or flex shaft of a progressive cavity pump is made up of composite materials, e.g., fiberglass and resin, in a variety of combinations with and without bonded resilient elastomers. The composites are formulated to p...  
WO1997024528A3  
WO/1997/029283A1
A micropump (11) comprising at least two first wafer means (10, 12) defining a pump chamber (9), and a filter including liquid supply means, liquid collecting means, second wafer means (10) and silicon wafer means (12; 15), are disclosed...  
WO/1997/024528A2
A pumping apparatus has a body portion with a chamber and channels (112) for receiving fluid that has entered the chamber through an opening (104) in the body portion. The chamber is covered by a membrane and the channels terminate in or...  
WO/1997/022806A1
A device for moving a liquid, particularly under low gravity conditions, is disclosed. The device includes means (2) for holding a liquid (6), which holding means have at least one inner wall provided with grooves (11) and made of a mate...  
WO1997010435A3  
WO/1997/010435A2
A fluid pump comprising a pump housing, a displacer and an elastic membrane. The displacer can be placed in a first and second end position by means of a drive unit. The displacer and the pump housing are so laid out that there is betwee...  
WO/1997/004233A1
An axial piston micropump (100) is disclosed, having a cylinder drum (2), in which several cylinders (41, 42) are provided, and a swash plate (1), with respect to which the cylinder drum (2) is rotatable. It is desirable for such a micro...  
WO1996042004A3  

Matches 551 - 600 out of 1,740