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JP5567385B2 |
The method involves producing a fluid flow rate in a common conveyor line (5) by two oscillating positive displacement pumps i.e. diaphragm pumps (1, 2). Drive motors (6, 7) of the respective displacement pumps are controlled in such a m...
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JP2014134192A |
To provide a syringe pump capable of easy and quick attachment and detachment without separating a syringe and a piston wherever the piston is positioned.A fixation screw 20 pushing an outer periphery of a syringe bottom is provided in a...
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JP5559971B2 |
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JP5543216B2 |
In one embodiment, a volumetric pump in a medical fluid delivery system comprises at least one piston in a hollow cylinder, the pump having at least one inlet port through which a medical fluid can be sucked into a pump chamber during an...
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JP5546827B2 |
A handheld dispenser (10) includes a collapsible liquid container (12), a liquid pump (14), an air pump (16), and a mixing chamber. The liquid pump (14) provides a collapsible liquid chamber (24) collapsed from an expanded volume to a co...
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JP5536630B2 |
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JP5510915B2 |
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JP5508490B2 |
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JP5494014B2 |
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JP5475695B2 |
A positive displacement pump (1) is equipped with a pump cylinder (2), a pump piston (7), a cylinder space (9), a pressure sensor (10), and a pressure channel (12). A main portion (13) of the pressure channel (12) extends parallel to a l...
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JP5465434B2 |
Hydraulic machine includes: a casing; a piston slidable therein and separating two chambers; hydraulic switching elements for supplying liquid to and for evacuating the chambers, including at least one connecting rod acting on a distribu...
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JP5455240B2 |
A method and computer program product for defining a PWM drive signal having a defined voltage potential. The PWM drive signal has a plurality of “on” portions and a plurality of “off” portions that define a first duty cycle for ...
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JP2014505194A |
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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JP5416827B1 |
To provide a liquid supply device capable of preventing pulsation from occurring in a liquid discharge rate and reducing the length dimension of the liquid supply device in the axial direction of a piston rod. A cylinder 30 having both e...
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JP5405217B2 |
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JP5404850B2 |
A pumping system that accurately dispenses fluid using a pump, including reducing the error in the amount of a fluid a pump dispenses by correcting for the compliance of a dispense system.
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JP2014020365A |
To make a liquid supply pump and a spray gun highly rigid, to reduce generation of pressure, to eliminate air bubbles in liquid, to form no air reservoir in a pipeline, and to certainly respond to a preliminarily programmed spray pattern...
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JP5401672B2 |
Precision dispense pumps comprise a housing that has an internal chamber disposed therein. A pressurizing assembly disposed within the chamber and includes a cylindrical pressurizing member having a head, a thin-walled skirt extending ax...
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JP5391141B2 |
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JP5388852B2 |
A metering pump for feeding out viscous materials, which pump comprises a housing having an inlet connectable to a viscous material source, an outlet; and a valve body of cylindrical basic shape, which is rotatable into at least two posi...
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JP2013543560A |
The invention relates to a metering pump for a metering device for metered dispensing of a liquid, which can be connected to a storage container, comprising a cylindrical pump body and an actuation body.
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JP3187555U |
To provide a plunger-driven measuring pump capable of reducing the time and effort for correctly attaching a pump head to a pump body in a plunger-driven measuring pump. A plunger-driven weighing pump is provided with a pump body 1 that ...
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JP5356906B2 |
To provide a liquid measuring and filling device capable of preventing the leakage of organic gas into a chamber by instantly closing a pressure reduction chamber with a float when measuring is concluded, succeeding a conventional favora...
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JP5358334B2 |
It is possible to correctly determine whether a change in the pressure or flow rate is caused by normal opening and closing operations of a check valve and to monitor in real time whether an operation of a check valve is normal or abnorm...
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JP5352324B2 |
To provide a pump system for delivering liquid by simplifying a structure and the control of a pump system. The pump system includes a pump 10 sucking an electrolyte from a suction passage 61 to a pump chamber 11 based on the supply of o...
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JP5345343B2 |
A liquid soap dispenser is disclosed having a permanent housing which permits simplified insertion and replacement of disposable fluid reservoirs. The housing includes an actuator assembly which is cycled by a lever between first and sec...
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JP5342605B2 |
To provide an inexpensive nonpulsating pump which is available even in an environment where oil contamination should be avoided. A plurality of cam-driven direct operated diaphragm pumps 12 are connected in parallel so as to make the end...
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JP5339915B2 |
Embodiments of the systems and methods disclosed herein utilize a brushless DC motor (BLDCM) to drive a singie-stage or a multi-stage pump in a pumping system for real time, smooth motion, and extremely precise and repeatable position co...
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JP5339795B2 |
To provide a technology easily detecting abnormality of a liquid discharge device. This invention relates to a control device for controlling the liquid discharge device having a positive displacement pump for supplying approximately con...
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JP5339796B2 |
To provide a technology easily detecting an abnormality of a liquid discharge device. This invention relates to a control device for controlling the liquid discharge device having a positive displacement pump for supplying approximately ...
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JP5330963B2 |
To effectively suppress pulsation of a paint pump device by setting an overlapping discharge period, and additionally setting an operation stop retention period during which the piston operation of a paint pump is continuously stopped. T...
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JP5331547B2 |
To provide a pump unit for delivering liquid increasing accuracy of a delivery quantity of liquid without requiring to provide a shut-off valve at a downstream side of a pump chamber, and to accurately control timing for closing the unit...
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JP5324723B1 |
To keep a uniform discharge amount per hour in a piston pump which moves a piston 2 in one direction and a reverse direction to continuously send a liquid or a fluid. A piston 2 moves in one direction, and a liquid or a fluid is discharg...
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JP2013194695A |
To provide a lightweight and compact liquid ejecting apparatus in which two pump chambers alternately and continuously implement liquid suction and ejection, respectively, and while one of the two pump chambers sucks the liquid, the othe...
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JP5292478B2 |
A syringe drive device 15 according to the present invention includes: an outer tube fixing portion 31 that detachably fixes an outer tube 22 of a syringe 16; a plunger holder 21 that holds a plunger 17 of the syringe 16; and a drive por...
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JP5288285B2 |
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JP5284572B2 |
The pump has a thrust member (20) fixed to a connecting rod (19), where the member is axially movable in a longitudinal axis in a magnet shroud (17). A magnetizing coil magnetizes a magnet in the shroud, for drawing the thrust member and...
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JP5281833B2 |
To continuously and accurately supply a minute amount of liquid by a simple means. When a chemical solution is injected into a measuring chamber 5 and it is detected that the amount of the chemical solution has reached the level of the p...
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JP5275933B2 |
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JP5268409B2 |
To provide a delivery device superior in interlocking performance between the reciprocating operation of a piston and the rotary operation of the piston, and superior in quantitativeness. This fixed volume delivery device 10 is provided ...
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JP5253178B2 |
Systems and methods for minimizing pressure fluctuations within a pumping apparatus are disclosed. Embodiments of the present invention may serve to reduce pressure variations within a fluid path of a pumping apparatus by avoiding closin...
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JP5224476B2 |
A volumetric pump comprises at least one piston inside a cylindrical housing and means to cause a relative to-and-fro linear movement between the cylindrical housing and the piston in order to produce a stroke of the volumetric pump. Thi...
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JP5186435B2 |
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JP5183629B2 |
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JP5186056B1 |
The objective of the present invention is to obtain a pump device that performs pressurization and depressurization suitable for a reusable discharge device, and to obtain a pump device that can be used as a pump device in a device that ...
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JP5165976B2 |
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JP5150065B2 |
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JP2013029080A |
To provide a non-pulsation pump capable of attaining non-pulsation with a simpler constitution.Each diaphragm pump 12 for constituting the non-pulsation pump has a plunger 22 for forming a plunger side recessed part for communicating wit...
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JPWO2011013162A1 |
Provided is a plunger-driven weighing pump capable of reducing the time and effort required to correctly attach the pump head 9 to the pump body 1 in the plunger-driven weighing pump. The plunger-driven metering pump according to the pre...
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JP2012233465A |
To provide a fluid transferer that transfers a fluid using reciprocation, and can prevent a difference between an average value of a fluid transfer amount and a peak value thereof during a cycle of the reciprocation, and to provide a flu...
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