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WO/2013/045598A2 |
The invention relates to a positive displacement pump (100), comprising a drive unit (1) and a pump unit (2) having several working chambers (4, 4'), several displacement elements (3, 3'), and at least three cylinders (5), preferably exa...
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WO/2013/026446A1 |
The invention relates to a control device of a piston pump unit comprising at least two piston-cylinder units that operate in a phase-shifted manner for the purpose of liquid chromatography and to a piston pump unit comprising such a con...
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WO/2013/013865A1 |
The invention relates to a piston pump (1) for delivering fluids, which piston pump comprises a cylinder (20), a piston which is movably mounted in the cylinder (20), and a pressure chamber (24) which is arranged between an inlet valve a...
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WO/2012/152472A1 |
The invention relates to an arrangement for throttling a fluid flow (1) having a throttle element (10) disposed in a fluid channel (5) for influencing a flow cross section, and to a piston pump for transporting fluids and having such a t...
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WO/2012/097901A1 |
The invention relates to a spring element (10), in particular for a piston pump, having a disc-shaped basic body (11), in which at least one spring bridge (16) is inserted. According to the invention, in order to throttle a fluid flow (8...
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WO/2012/100192A1 |
Different inner diameter internal or external pressure drop tubes 304, 305 or orifice plate 1004, 1005 openings producing different discharge pressure pulse amplitudes are employed in a pump pulsation control reactive discharge dampener ...
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WO/2012/091508A2 |
The present invention relates to a compressor, and the invention provides a compressor which comprises: an electrically-powered unit that generates electric power; and a compression mechanism unit that has a cylinder, a piston, and a pis...
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WO/2012/079815A1 |
In a piston pump (10), in particular for a hydraulic assembly of an electronically controllable vehicle brake system, having a cylinder element (22), in which a pressure chamber (32) with an outlet is formed on the inside, an outlet-rest...
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WO/2012/072494A1 |
The invention relates to a chromatography pump, comprising a cylinder (202, 402) in which a piston (204, 404) is arranged for a reciprocating movement; a front element (208) provided with a cylinder head area (210) which together with th...
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WO/2012/047283A2 |
A damper assembly for a fuel pump includes at least one diaphragm assembly formed by joining two metal diaphragms to respective two sides of an imperforate central plate, thereby creating a pair of closely spaced diaphragms, each acting ...
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WO/2011/126367A2 |
The present invention discloses a pump system using multiple reciprocating positive displacement pumps which phase shift is controlled by a phase shift controller. The phase shift controller uses a virtual master pump inside the phase sh...
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WO/2011/115180A1 |
Disclosed is a hydraulic pump/motor provided with two pressure accumulation oil passages (20, 21) for accumulating pressure, which respectively communicate with a pair of ports (20a, 20b) and a pair of ports (21a, 21b), said ports (20a, ...
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WO/2011/101118A1 |
Dosing pump unit comprising a dosing chamber (6), a displacer limiting said chamber and being displaced by a displacement drive (22) and a control device (30) for controlling the displacement drive. The control device is designed such th...
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WO/2011/100134A1 |
A medical fluid infusion system (10) including: a fluid pathway (16) for transporting a pulsatile flow of fluid; a dampening element (80) in communication with the fluid pathway, the dampening element configured to actively dampen pressu...
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WO/2011/083901A1 |
The present invention relates to a sealing-type reciprocating compressor, and more particularly, to a sealing-type reciprocating compressor which maximizes compressing efficiency, minimizes fluctuation during suction and compression, and...
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WO/2011/065334A1 |
Provided is a reciprocation pump which can reduce pulsation of liquid, caused in association with reciprocation of a reciprocation means. The reciprocation pump is comprised of a supply liquid-side auxiliary pump chamber (P1a) which comm...
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WO/2011/054948A1 |
A housing (30) for use in high pressure fluid applications comprising a first drilling (32a, 32b), defining a first axis, and having a region of enlarged diameter (32b) bounded by an upper boundary (36) in a first plane and a lower bound...
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WO/2011/000602A1 |
The invention relates to a multi-piston pump (1) as a return pump for a hydraulic vehicle brake system. According to the invention, the multi-piston pump is configured to comprise two pump pistons (2) that are phase-shifted by 90 degrees...
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WO/2010/124741A1 |
A method for determining compressibility of a fluid is described. The method comprises starting at a first value of pressure and compressing a first volume of the fluid to a first compressed volume at a second value of pressure, starting...
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WO/2010/081695A1 |
The invention relates to a method for feeding pasty masses using a pump device which has a piston pump with at least two cylinders with in each case one piston, in which pump device each cylinder is connected via an inlet opening, which ...
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WO/2010/070482A2 |
In a waveguide pump and method of pumping liquid, at least a portion of an elongate ultrasonic waveguide is immersed in a liquid reservoir. The waveguide has first and second ends, a nodal region located longitudinally therebetween, and ...
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WO/2010/015460A1 |
The invention relates to a method for operating a multi-pulse piston pump (10), particularly a flushing pump for use in well drill holes (12), comprising at least two pistons (24), each being guided in a cylinder (22), and one drive acti...
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WO/2010/015279A1 |
A solvent supply system for supplying a composite solvent is described. The solvent supply system comprises a first supply flow path with a first pump unit, the first supply flow path being adapted for supplying a flow of a first solvent...
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WO/2009/062538A1 |
In a high performance liquid chromatography system (10), wherein a mobile phase is driven through a stationary phase for separating compounds of a sample fluid comprised in the mobile phase, a flow rate of the mobile phase is controlled ...
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WO/2009/013175A1 |
The invention relates to a pump, particularly a high-pressure fuel pump, having a drive shaft (12) which is provided with a first double lobe (18), wherein the two lobes are arranged at a rotational displacement to each other of approxim...
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WO/2009/010191A1 |
The invention relates to a piston pump for a hydraulic pressure generator in a vehicle braking system. The piston pump comprises a housing in which a bore 30 is formed for receiving an eccentric shaft 32. At least six cylinders 12, 14, 1...
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WO/2008/077725A1 |
A multiple membrane pump for food liquids and the like, comprising at least one duct (6) for the compensated intake of the liquid, which is closed on itself in a loop and is provided with at least one intake port (7), at least one duct (...
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WO/2008/077758A1 |
A hydraulically controlled high-pressure piston pump for the high-pressure supply of consumers, in particular in common rail injection systems of internal combustion engines, has a pump housing (1) with at least one high-pressure cylinde...
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WO/2008/077408A1 |
Pump for measuring out and feeding liquefied urea to a nozzle arranged in an exhaust system of an engine. The pump comprising: a first and a second void (13, 24), the volumes of the voids are de-/increasable thereby each having a displac...
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WO/2008/005114A1 |
A liquid pump (20) includes an electronically controlled throttle inlet valve (50) to control pump output. With each reciprocation cycle, a plunger (26) displaces a fixed volume of fluid. When less than this fixed volume is desired as th...
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WO/2007/124873A1 |
Metering pump comprising a cylindrical housing with a pump piston (12) moved back and forth in the housing for feeding (feeding stroke), and intake (intake stroke) of a hydraulic fluid from an inlet region (2) into the outlet region (4) ...
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WO/2007/123165A1 |
A metering pump device capable of performing a fixed amount of discharge with a high accuracy even if a pressure difference occurs between outflow side valves. In the metering pump device (1), two reciprocating pump devices (10A, 10B) ar...
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WO/2007/068431A1 |
The invention relates to a hydrostatic piston machine comprising a cylinder drum which is rotationally mounted in the housing. Several cylinder bores are arranged in the cylinder drum, which can be connected to a first control opening (1...
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WO/2007/069887A1 |
The invention relates to a device for damping discharge pulsations in a medium being pumped through a system of pipes in a pulsating manner by a displacement pump that operates with a specific discharge characteristic, which device at le...
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WO/2007/048632A1 |
The invention relates to a load-pressure-controlled feed flow regulator (1) for adjusting the feed volume of an adjustable hydraulic pump (2) which feeds in a working line (3). The load-pressure-controlled feed flow regulator (1) has an ...
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WO/2007/049503A1 |
A liquid pump capable of appropriately absorbing a pulsation even if the pump is driven at high frequency. A pulsation absorption unit (14) for absorbing a pulsation has a pulsation absorption housing member (44) installed on a pump hous...
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WO/2007/045373A1 |
The invention relates to a plug-in pump injection system for an internal combustion system, wherein a plug-in pump (10) embodied in the form of an injection pump is assigned to each cylinder of the internal combustion engine and each plu...
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WO/2007/014583A1 |
The invention relates to a hydraulic accumulator, particularly in the form of a suction stream stabilizer, having an accumulator housing (10) which is provided with two fluid connections (16) between which a deflection device (22) is arr...
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WO/2006/133929A1 |
The invention relates to a manual piston suction pump, comprising a pump base, a pump column, a liquid outlet opening and a pump piston, connected to a pump clapper which may lift liquid into the riser tube on an inlet stroke. The piston...
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WO/2006/102884A1 |
The invention relates to a lifting piston fuel pump (16), especially for a motor vehicle heating system (10), that is electromagnetically driven and used to transport liquid fuel. Said fuel pump comprises a damping element (34) which is ...
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WO/2006/089772A1 |
The invention relates to a pump device for transporting a pulpy substance. Said device comprises at least two main transport cylinders for transporting the pulpy substance, a selectable slide gate system, which in a first slide mode crea...
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WO/2006/087036A1 |
A pumping apparatus (1) adapted for delivering fluid against pressure. The pumping apparatus has a plurality of metering devices (3,5) adapted for metering a plurality of different fluids, and has a booster device (7) adapted for increas...
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WO/2006/087037A1 |
A pumping apparatus adapted for blending at least two different fluids and for delivering the blended fluid against pressure is suggested. The pumping apparatus has a plurality of metering devices a plurality of metering devices adapted ...
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WO/2006/066994A1 |
The invention relates to a piston pump (1) comprising at least one step piston element (4) which can be actuated by means of a drive device (2) and which is arranged in a housing (3) such that it can be moved in a longitudinal manner. Sa...
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WO/2006/068263A1 |
In a liquid discharge control apparatus which uses a piezoelectric type diaphragm pump, an accumulator having a liquid accumulation cavity and a movable member is communicated to an outlet of the diaphragm pump. In discharge operation of...
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WO/2006/067076A1 |
A piston pump (1A, 1B) is disclosed, comprising at least one piston element (4A, 4B), driven by a drive device (2) and arranged to be longitudinally-displaced in a housing (3) and with at least one first pressure chamber (10A, 10B), defi...
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WO/2006/016047A1 |
The invention concerns a heart circulatory support comprising an intake cannula designed to be introduced through the peripheral blood vessels of the patient's body into a vena cava or into a pulmonary vein to sample blood from the patie...
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WO/2006/017121A2 |
A feedback control loop for a high pressure pump modifies the accumulator velocity and pressure during solvent transfer. The accumulator velocity is adjusted to maintain the system pressure equal to the expected pressure to thereby elimi...
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WO/2005/119059A1 |
A displacement pump comprises: a cylinder with at least one end wall and a piston movable reciprocally therein by drive means. In co-action with valve means, liquid can hereby be drawn in and pumped. The reciprocal driving of the pisto...
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WO/2005/095875A1 |
[PROBLEMS] In a reduction in fluid pressure pulsation, a large space has been required for fluid expansion and larger pressure loss has been involved. [MEANS FOR SOLVING PROBLEMS] A pressure pulsation reducing device having a flow path t...
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