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Patent Searching and Data


Matches 551 - 600 out of 1,713

Document Document Title
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  
WO/1996/042004A2
A system and method for accomplishing a plurality of combinatorial processes in parallel comprising a microelectronic and fluidic array (device array) having reservoirs, connecting microchannels and reaction cells etched into a substrate...  
WO/1996/039252A1
The invention provides electrode-based pumps (803) and methods of operating such pumps. In one embodiment, the invention provides an electrode-based pump situated in a fluid channel comprising a first electrode (801A) and a second electr...  
WO/1996/039260A1
The present invention provides a method of forming a fluid-tight electrical conduit through a high aspect ratio hole, the method comprising sintering a via ink to form the electrical conduit and to seal the hole.  
WO/1996/021108A1
The present invention concerns a pump for conveying a medium, in particular a gas-liquid mixture, said pump comprising: a housing (3); a rotor (11) mounted in the housing (3); a hollow shaft (19) mounted in the housing and eccentrically ...  
WO/1996/017172A1
An integrated microactuator including a gas-containing cavity (4) within at least one layer (1, 2, 3) of photolithographically machinable material, electrodes (13, 15, 16) for generating an electric field inside the cavity (4) that can c...  
WO/1996/015576A1
The present invention provides a liquid distribution system, which is useful in a number of contexts, including in accomplishing various synthetic, diagnostic and drug screening reactions. The distribution system can comprise an alpha re...  
WO/1996/000849A1
Known micropumps are characterised by a relatively complex design that in general is difficult to produce and mount. In addition, the pump capacities they can achieve are limited. A new micropump should have a more simple design that is ...  
WO1995023000A3  
WO/1995/025223A1
An electromagnetic pump comprising a housing having a fluid receiving chamber (14) in communication with an inlet (18), a fluid pumping chamber (16) in fluid communication with an outlet (20), a check valve operatively associated with th...  
WO/1995/023000A2
In one embodiment described in the specification, a surgically implantable reciprocating pump employs a check valve as the piston, which is driven by a permanent magnet linear electric motor to assist either side of the natural heart. Th...  
WO/1995/012758A1
A central impeller (77) is sandwiched between fixed walls (19, 23) and is driven through a circular path of small radius, but is prevented from rotating by a ring-shaped shutter or slider (59) which surrounds and guides it. The shape of ...  
WO/1995/002764A1
A pump system for producing high and exactly controllable pressure levels includes a piston pump which has a piston (32) connecting to a spindle shaft (22), a spindle nut (44) on said spindle shaft, a cylinder block (34) having a bore (3...  
WO1994023201A3  
WO/1994/023201A2
Cryogenic fluid piston pump functions as stationary dispensing pump, mobile vehicle fuel pump etc., and can pump vapour and liquid efficiently even at negative feed pressures, thus permitting pump location outside a liquid container. Pis...  
WO1994012285A3  
WO/1994/020755A1
A mechanically simply battery operated air pump for one hand operation comprises a battery (1), a motor (2), a gear (3), a cylinder/piston pump (4), and a nozzle (5). The battery, the motor, the gear, and the cylinder/piston pump are arr...  
WO/1994/013488A1
The invention provides an ink jet printer provided with a maintenance station which is simple in construction and small-sized. A cap holder is provided with a suction port (28) communicating with a cap through a communication hole, a dis...  
WO/1994/012285A2
A device for comminuting a liquid, which comprises at least two electrohydrodynamic comminution means (24) arranged so that in use comminution of opposing polarity are formed which are substantially admixed after formation and a pump (22...  
WO/1994/009274A1
A sealless centrifugal blood pump (10) is provided in which a rotatable impeller (64) is supported in a pump housing (12) by fluid bearings (30, 182) during operation. Rotational movement of the impeller (64) is accomplished with an inve...  
WO/1994/003397A1
The membrane type deaerator according to the present invention is characterized by the arrangement and connected condition of a plurality of membrane deaerator modules and a water sealed vacuum pump connected thereto. These modules are s...  
WO/1993/010353A1
The compressor includes a cylindrical housing (1), in the bore of which moves a piston (3) whose periphery is adjusted with little play in the cylinder (1). The end (5) of the piston (3) includes a gas inlet (6) and supports two spherica...  
WO1992016750A3  
WO/1992/016721A1
The kinematic motion assembly (10) comprises a cylinder element (12) and a piston element (14) collaborating with each other, each of which is rotatably carried in an eccentric position on a rotating body (22, 36). The rotating bodies ro...  
WO/1992/016750A2
A conveying apparatus for lifting fluid includes a flexible conveyor assembly having a pair of flexible tubes forming respective tubular walls and an endless flexible rope conveyor extending through respective passages defined by the tub...  
WO/1992/012344A1
A positive displacement pump (10) comprises a mass such as a liquid filled pressure chamber (38, 115, 208, 209, 592) or an annular ring (352, 446) which is rotated at high speed about a first axis (15) so that centrifugal force acting on...  

Matches 551 - 600 out of 1,713