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WO/2005/061371A1 |
An improved microprocessor-controlled dual piston-pump viscous fluid dispensing system as for dispensing uniform sealing beads and the like (as well as other types of uniform deposits), wherein the pressure throughout the fluid path is m...
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WO/2005/031161A2 |
Disclosed is a fluid pump (20), especially a high-pressure fuel pump, comprising a housing (50) and at least one low-pressure connection (18) on the intake side. An intake valve (40) and a conveying space (32) which is delimited by a con...
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WO/2005/026551A1 |
A pump piston force modulator comprises a predetermined preloaded spring assembly having a spring (5), a housing (2), and a piston holder (6) holding a piston (1). The spring assembly is adapted for use in conjunction with a positive dis...
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WO/2004/088137A1 |
The invention relates to a reciprocating pump (18), especially for an electronically controlled automotive braking system. The aim of said reciprocating pump (18) is to provide the pressure required for modulating the brake pressure in t...
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WO/2004/041418A1 |
The invention relates to a method and device for continuously desalinating water by reverse osmosis, particularly for desalinating sea water, according to which: salt water (10) is introduced by a delivery pump (1) into a pressure compen...
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WO/2004/020171A1 |
Liquid sending portions (7a, 7b) of an intermittent fixed displacement pump (6) intermittently sucking and discharging a fixed amount of fluid are parallelly arranged, plastic raw material liquid is discharged from the liquid sending por...
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WO/2004/009996A1 |
The invention relates to a piston engine comprising a rotatably mounted cylindrical drum (2) provided with a plurality of cylindrical boreholes distributed over the circumference thereof and containing displaceable pistons. Said cylindri...
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WO/2004/003383A1 |
The invention concerns a hydraulic amplification device for a high-pressure pumping system comprising at least: an supply unit (100) of low pressure liquid Pb; a so-called cylinder/piston assembly (200) in output transforming into high p...
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WO/2004/001228A2 |
An improved high-pressure pump (1) for an accurate, largely pulsation-free flow of the working medium, more particularly an HPLC pump, includes one or a plurality of the following measures: reduced dead space due to adapted seals (48, 70...
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WO/2003/087584A1 |
Disclosed is a hydro damper for absorbing pressure oscillations and/or acoustic vibrations in systems which are operated by means of pressurized fluids. The inventive hydro damper is provided with a housing (1) having a leading dimension...
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WO/2003/079000A1 |
A gradient liquid feed pump system capable of liquid feed in a correct mixing ratio even in the case of liquid feed in which the mixing ratio varies. Specifically, it comprises a first plunger pump for sucking and delivering an eluate, a...
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WO/2003/067089A1 |
A peristaltic pump comprising (i) two fluid flow tubes; (ii) two pressure members operable to urge fluid flow through the tubes, the pressure members being mounted on a common rotatable element and operating with a phase difference betwe...
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WO/2003/045130A1 |
The controller of the plural component proportioner (10) dispenses both components (or all three if a three component material) simultaneously (at least initially) and maintains ratio at the end of each predetermined volume of material b...
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WO/2003/024612A1 |
The invention concerns a conveyor system comprising a number of devices (1) for conveying powder, whereby each device (1) has a conveying chamber (3), into which a supply line (6) and a discharge line (8) for the powder lead, and means f...
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WO/2003/024613A1 |
According to the invention, a pump device (3) for conveying powder may continuously convey a reproducible amount of powder, whereby a compressed gas inlet in the conveying chamber (8) of a conventional arrangement of a conveying chamber ...
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WO/2003/012296A1 |
A pumping arrangement for a paint circulation system comprising a reciprocating pump (13), and characterised by an alternating current induction motor (15), a rotary-to-linear motion converter (16) coupling the output of the induction mo...
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WO/2003/004872A1 |
Conventional piston pumps that are currently used for braking systems are frequently prone to noise problems caused by pressure pulsations. In the vicinity of the outlet valve (24) the inventive piston pump (1) comprises a pressure chamb...
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WO/2002/101241A1 |
A positive displacement pump for pumping fluids from a downhole formation to the earth's surface is provided. The pump (100) first comprises a plunger (130). The plunger is reciprocated axially within the wellbore by a linear actuator (3...
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WO/2002/095231A1 |
A discharge apparatus for reciprocating compressor, wherein the compressor comprising: a shell connected to a gas suction conduit for sucking gas; a cylinder in the shell; a compression unit including a piston (10) performing reciprocal ...
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WO/2002/090771A2 |
A liquid outlet link assembly (10) is provided for liquid delivery output rates below 10 µl per minute so as to smooth out the flow from a positivee displacement pump (1) which has an immediate step pumping rate which is relatively subs...
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WO/2002/081917A1 |
A displacement pump (1) and an in-line damper which find application in the pumping of slurries. The device in each instance uses a conical flexible membrane (15) which is partially inverted. The membrane (15) is reciprocated to increase...
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WO/2002/081918A1 |
The invention relates to an oscillating displacement pump, in particular a diaphragm pump (P) for a liquid or gaseous delivery medium. Said pump has a delivery chamber, which is delimited on one side by a pump head and on the other side ...
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WO/2002/079650A2 |
Disclosure is made of a method for electronic polar attenuation of torque profile for positive displacement pumps by a processor where the attenuated torque profile is compared with the shaft displacement angle of the pump input shaft. T...
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WO/2002/072398A1 |
Conventional piston pumps for braking systems are prone to cause problems of noise as a cause of pressure pulsations. The inventive piston pump for braking systems is characterized in that in the area of the outlet valve (24) an effectiv...
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WO/2002/070896A1 |
The invention relates to a flow compensation device for a positive-displacement pump (2) of a dosing device, comprising a first (4) and a second actuation means (18), in which the second actuation means (18) comprises a variable-volume c...
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WO/2002/064977A1 |
The invention relates to a damper device for a piston pump. The device includes a partly air-filled, upright tube (1) placed on the inlet conduit (2) of the piston pump, and a partly air-filled, upright tube (3) placed on the outlet cond...
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WO/2002/053900A2 |
Fluid and fuel delivery systems reducing pressure fluctuation. Such systems use a conduit that attenuates pressure fluctuations. Preferably, the conduit attenuates pressure fluctuations by reflecting a portion of a pressure wave within t...
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WO/2002/046612A1 |
The invention concerns a device for pumping pasty liquid or sensitive products, comprising a double-action reciprocating pump. It comprises n pumps ( n being not less than 2) whereof the displacements of the pistons are offset relative t...
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WO/2002/038958A1 |
The invention relates to a pump arrangement consisting of two hydraulically driven plunger piston pumps (11, 12). The movement of the plunger pistons (13, 23) is controlled by control mechanisms which supply a pressure means to double-ac...
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WO/2002/029106A2 |
A microfluidic device comprises pumps, valves, and fluid oscillation dampers. In a device employed for sorting, an entity is flowed by the pump along a flow channel through a detection region to a junction. Based upon an identity of the ...
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WO/2002/023040A1 |
A piston engine in the form of a piston pump or a piston engine (motor) comprises two or more piston cylinders (14b, 14c), preferably positioned with the same angular distances of 180 degrees for two cylinders, 120 degrees for three cyli...
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WO2000057173A9 |
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...
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WO/2001/081761A1 |
The invention relates to a coupling for equalizing variations in the volume flow of a hydraulic engine, the hydraulic engine (M) comprising at least one periodically operated displacement chamber (4) and being arranged to suck pressurize...
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WO2000047893A9 |
A pulsation dampener (10) which includes a vessel (12) defines an interior for receiving a fluid. At least two resilient cartridges (36) are disposed within the interior of the vessel (12). The resiliant cartridges are pressurized to dif...
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WO/2001/077529A2 |
A method for reducing noise and cavitation in machines and pressure exchangers which pressurize or depressurize fluids by means of the displacement principle, wherein at least one of the pressure exchanger's end covers is equipped with c...
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WO/2001/057399A1 |
Fluid pumping apparatus for pumping fluids from a well comprising a downhole pump disposed near the lower end of a production string and including a tubular pump barrel (20) and a tubular pump plunger (30), concentrically disposed in the...
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WO/2001/044659A1 |
The invention relates to a piston engine which is essentially comprised of an engine shaft (1) and a set of modules, each of which comprises a cylinder (2a, 2b) and a piston (3a, 3b) powered by the engine shaft in the cylinder, each modu...
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WO/2001/040653A1 |
A fluid device capable of preventing sediment from stagnating and accumulating in a liquid chamber of a pump when a transfer liquid containing sediment such as slurry is used, wherein a suction port (18) and a delivery port (19) and a di...
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WO/2001/040652A1 |
A fluid device with bellows capable of preventing sediment from stagnating and accumulating inside a suction check valve and delivery check valve when a transfer liquid containing sediment such as slurry is used, wherein a suction port (...
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WO/2001/000990A1 |
The invention relates to a piston pump (10) for a hydraulic vehicle brake system, in particular, for a slip-regulated system. In order to dampen pressure pulsations, the invention provides a throttle valve (100) which serves as a point o...
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WO/2000/075513A1 |
The invention concerns a pump designed to pump a first liquid, called transferred liquid, comprising a main unit (18) for pumping the transferred liquid actuated by an auxiliary unit (20) for pumping a second liquid, called working liqui...
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WO/2000/058036A1 |
A pressure booster and method for amplifying a water pressure that is supplied by a water facility is provided. The pressure booster is configured to be connected between the water facility and one or more semiconductor substrate cleanin...
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WO/2000/050772A1 |
The invention relates to a hydraulic pump unit (1) that comprises several pump elements (2) disposed in a plane and having a cylinder (3) and a piston (4) which can be displaced longitudinally therein, whose longitudinal axes (5) bisect ...
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WO/2000/036329A1 |
The invention relates to a pressurised system for conveying liquids without pulsing. The inventive system can be used for highly pure liquid chemicals in the semiconductor industry.
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WO/2000/032932A1 |
A reversibly actuatable fluid hydraulic pump is described for use in a hydraulically driven elevator. The pump comprises a cylinder and a piston linearly actuatable within the cylinder by means of a ball screw race disposed over a spindl...
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WO/2000/025023A1 |
An apparatus for damping the pulsation of a reciprocating pump which occurs due to variation of a flow rate and a pressure of a fluid ascribed to the reciprocation of the pump. The apparatus can be installed and used in either a vertical...
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WO/2000/015962A1 |
A double-acting pump which includes two rooms that are each divided into an operating chamber (6) and a working chamber (5) by means of a moveable partition wall (4) in the form of a piston or a diaphragm (membrane), wherein each of said...
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WO/2000/010855A1 |
The invention relates to a hydraulic brake system comprising an anti-slip system which comprises a motor (21) and a hydraulic pump (18) which can be driven by same and has at least one displacement chamber. The brake system further has a...
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WO/2000/001947A2 |
A pumping mechanism has a pumping chamber (5) which receives a liquid such as water from a liquid supply (1) and from which the liquid is driven in a driving phase of the pumping cycle by an actuator (4) into a discharge conduit (6, 8) a...
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WO/1999/064283A1 |
The invention relates to a hydraulic braking system for automobiles having an electrohydraulic brake servo unit comprising a piston pump. In order to reduce pressure pulsations on a suction side of the multiple-piston pump, the invention...
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