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Небесная энциклопедия

Космические корабли и станции, автоматические КА и методы их проектирования, бортовые комплексы управления, системы и средства жизнеобеспечения, особенности технологии производства ракетно-космических систем

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Мониторинг СМИ

Мониторинг СМИ и социальных сетей. Сканирование интернета, новостных сайтов, специализированных контентных площадок на базе мессенджеров. Гибкие настройки фильтров и первоначальных источников.

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Поддерживает ввод нескольких поисковых фраз (по одной на строку). При поиске обеспечивает поддержку морфологии русского и английского языка
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Применить Всего найдено 3977. Отображено 100.
03-05-2012 дата публикации

Cassette system integrated apparatus

Номер: US20120106289A1
Автор: Brian Tracey, James D. Dale, Jason A. Demers, Kevin L. Grant, Michael J. Wilt
Принадлежит: Deka Products LP

A cassette integrated system. The cassette integrated system includes a mixing cassette, a balancing cassette, a middle cassette fluidly connected to the mixing cassette and the balancing cassette and at least one pod. The mixing cassette is fluidly connected to the middle cassette by at least one fluid line and the middle cassette is fluidly connected to the balancing cassette by at least one fluid line. The at least one pod is connected to at least two of the cassettes wherein the pod is located in an area between the cassettes.

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Номер записи: 1
27-09-2012 дата публикации

Chemical liquid supply device and chemical liquid supply method

Номер: US20120241469A1
Автор: Toshio Takeishi
Принадлежит: Koganei Corp

A chemical liquid supply device has a pump provided with a pump chamber which is expanded and contracted by an elastically deformable bellows, and chemical liquid in a chemical liquid container flows into the pump chamber through a suction channel. The chemical liquid in the pump chamber is discharged through a discharge channel to a discharge nozzle. A looped circulation channel for returning the chemical liquid supplied from the pump chamber to the pump chamber is connected to the pump, and provided with an expanding and contracting portion. A filter for filtering the chemical liquid which is returned to the pump chamber is provided to the circulation channel. Since flow resistance of the filter is not applied to the pump when the chemical liquid is discharged from a discharge nozzle, it's possible to discharge a specific amount of chemical liquid from the discharge nozzle with a high degree of accuracy.

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Номер записи: 2
24-01-2013 дата публикации

Cassette system integrated apparatus

Номер: US20130022483A1
Автор: Brian Tracey, James D. Dale, Jason A. Demers, Kevin L. Grant, Michael J. Wilt
Принадлежит: Deka Products LP

A cassette integrated system. The cassette integrated system includes a mixing cassette, a balancing cassette, a middle cassette fluidly connected to the mixing cassette and the balancing cassette and at least one pod. The mixing cassette is fluidly connected to the middle cassette by at least one fluid line and the middle cassette is fluidly connected to the balancing cassette by at least one fluid line. The at least one pod is connected to at least two of the cassettes wherein the pod is located in an area between the cassettes.

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Номер записи: 3
28-03-2013 дата публикации

Pumping cassette

Номер: US20130074959A1
Автор: Brian D. Tracey, James D. Dale, Jason A. Demers, Kevin L. Grant, Michael J. Wilt
Принадлежит: Deka Products LP

A pump cassette is disclosed. The pump cassette includes a housing having at least, one fluid inlet line and at least one fluid outlet line. The cassette also includes at least one reciprocating pressure displacement membrane pump within the housing. The pressure pump pumps a fluid from the fluid inlet line to the fluid outlet line. A hollow spike is also included on the housing as well as at least one metering pump The metering pump is fluidly connected to the hollow spike on the housing and to a metering pump fluid line. The metering pump fluid line is fluidly connected to the fluid outlet line.

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Номер записи: 4
02-05-2013 дата публикации

Method for dosing a fluid formulation containing a medicinal substance

Номер: US20130106013A1
Автор: Hans Almer Middelbeek, Mari Janssen
Принадлежит: Intervet Inc, Merck Sharp and Dohme BV

The present invention pertains to a method for dosing a fluid formulation containing a medicinal substance into a mould to form a pharmaceutical unit with a volume of 1000 μI or less, using a peristaltic pump comprising a flexible tube for guiding the fluid formulation to the mould and at least one roller to compress the tube to induce a flow of the fluid formulation through the tube, the method comprising placing a spout of the tube adjacent the mould, displacing the roller over a predetermined length of the tube to dose the fluid formulation in the mould, positioning the spout such that when the dosing is finished, at least the open end of the spout is present in the dosed unit, and after dosing, retracting the spout end out of the dosed unit.

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Номер записи: 5
23-05-2013 дата публикации

Device With A Peristaltic Hose Pump And Associated Method

Номер: US20130126404A1
Автор: Gronau Sören, Mueller Ralf
Принадлежит: FRESENIUS MEDICAL CARE DEUTSCHLAND GMBH

The present invention relates to an apparatus having at least one hose roller pump, wherein the hose roller pump has at least one pump bed and at least one hose or hose part inserted or insertable into the pump bed, and having at least one pressure detection means which is arranged downstream of the hose roller pump and by means of which the time extent of the pressure of a fluid conveyed by means of the hose roller pump can be determined, and having at least one evaluation means by means of which the occlusion of the hose or hose part inserted or insertable into the pump bed can be monitored with reference to the time difference and/or to the angular difference between at least one maximum and at least one minimum of the determined time extent of the pressure and/or with reference to a local minimum of the determined time extent of the pressure. The invention furthermore in particular relates to a method therefor. 1. An apparatus having at least one hose roller pump , wherein the hose roller pump has at least one pump bed and at least one hose or hose part inserted or insertable into the pump bed , and having at least one pressure detection means which is arranged downstream of the hose roller pump and by means of which the time extent of the pressure of a fluid conveyed by means of the hose roller pump can be determined , and having at least one monitoring means by means of which the occlusion of the hose or hose part inserted or insertable into the pump bed can be monitored with reference to the time difference and/or to the angular difference between at least one maximum and at least one minimum of the determined time extent of the pressure and/or with reference to a local minimum of the determined time extent of the pressure.2. An apparatus in accordance with claim 1 , characterized in that the pressure detection means is arranged downstream of the hose roller pump and upstream of a filter claim 1 , in particular of a dialyzer claim 1 , and the pressure profile ...

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Номер записи: 6
23-05-2013 дата публикации

Precision pump with multiple heads

Номер: US20130129529A1
Автор: Brian Kidd, John Laessle, John Vines
Принадлежит: Integrated Designs LP

A pump for one or more different process fluids is provided including a pumping chamber having a process fluid inlet and outlet coupled to a process fluid valve on each pumping chamber for selectively preventing and allowing flow of process fluid through the pumping chamber. An actuation mechanism for pumping actuating fluid to actuating fluid chambers is provided that is in communication with the actuating fluid chambers to permit flow into each actuating fluid chamber of incompressible actuating fluid. A diaphragm separates each pumping chamber from an associated actuating fluid chamber for separating process fluid from actuating fluid. The actuation mechanism is removable by a quick disconnect that provides for disconnection of the activation mechanism without affecting process fluid. Operation of the actuation mechanism to displace actuating fluid causes actuating fluid to flow only into each actuating fluid chamber having an opened process fluid valve, resulting in pumping.

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Номер записи: 7
27-06-2013 дата публикации

FLOW RATE CONTROL DEVICE FOR VARIABLE DISPLACEMENT TYPE HYDRAULIC PUMP FOR CONSTRUCTION EQUIPMENT

Номер: US20130160439A1
Автор: Joung Hea-Gyoon, Lee Sang-Hee, Shin Hung-Ju
Принадлежит: VOLVO CONSTRUCTION EQUIPMENT AB

The present invention pertains to a hydraulic pressure control device of a variable displacement type hydraulic pump for construction equipment, wherein operable sections of operation systems are formed in a wide manner while the hydraulic pump discharges a relatively small flow rate compared with the operation amount of the respective operation systems in the case of complex operations, so as to improve the pressure loss and the fuel ratio of the hydraulic pump. The device includes a flow rate controller, which is preferably connected to an operation amount detecting means and a swash plate control device, and receives operation signals from the operation system of a control device that are detected by the operation amount detecting means so as to control the discharge flow rate of the hydraulic pump. In the case of the complex operations, the flow rate controller pre-determines the required flow rate of an actuator for the respective operation systems via the operation signals of the operation systems and subsequently operates the square root of the sum of the squares of the respective required flow rates so as to determine the discharge flow rate of the hydraulic pump, thereby controlling the swash plate control device. 1. A flow rate control apparatus of a variable displacement hydraulic pump for a construction machine comprising:an engine;at least one variable displacement hydraulic pump having a swash plate control device for controlling an opening area thereof and configured to be pumped by the engine to provide hydraulic pressure;a plurality of actuators for work apparatuses including a boom actuator or an arm actuator, a bucket actuator, and a swing motor;a work apparatus control valve connected and installed between the hydraulic pump and the actuators for work apparatuses, and configured to control the hydraulic pressure discharged from the hydraulic pump to perform a start, a stop, and a swing operation of the actuators for the work apparatuses and the ...

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Номер записи: 8
04-07-2013 дата публикации

Control Arrangement and Method for Activating a Plurality of Hydrualic Consumers

Номер: US20130167518A1
Автор: Amrhein Jan, Neumann Uwe, Weickert Thomas
Принадлежит: ROBERT BOSCH GMBH

A control arrangement for supplying pressure medium to a plurality of consumers. A supply metering orifice and an individual pressure compensator are associated with each consumer of the plurality of consumers. The individual pressure compensator is adjusted via a central control unit. 1. A hydraulic control arrangement for supplying a pressure medium to a plurality of consumers , comprising:a variable displacement pump connected via the pressure medium to the plurality of consumers in each case via an adjustable supply metering orifice and an individual pressure compensator associated therewith,wherein the individual pressure compensators are subjected in the opening direction to the pressure downstream of the respective supply metering orifices and in the closing direction to a control pressure, andwherein the control pressure is adjustable via a control unit.2. The control arrangement according to claim 1 , wherein the control pressure for the individual pressure compensators is approximately equal.3. The control arrangement according to claim 1 , wherein the control pressure is adjusted in such a way that the individual pressure compensator of the consumer having the highest load pressure is set to a reference opening position and the individual pressure compensators of the consumers having lower load pressure are set to a smaller opening cross section.4. The control arrangement according to claim 1 , further comprising:a pressure reducing valve configured to adjust the control pressure.5. The control arrangement according to claim 4 , wherein the pressure reducing valve is adjustable electrically or electrohydraulically via the control unit.6. The control arrangement according to claim 1 , wherein the control pressure is adjusted as a function of the lifts of the individual pressure compensators associated with the consumers.7. The control arrangement according to claim 6 , wherein the individual pressure compensator includes a displacement transducer.8. The ...

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Номер записи: 9
25-07-2013 дата публикации

Compressed-air compressor

Номер: US20130189125A1
Автор: Balma Roberto
Принадлежит: Fini Nuair S.p.A.

A compressed-air compressor, the compressor having a cylinder; a piston mounted to slide along the cylinder and define, inside the cylinder, a variable-volume compression chamber; and an actuator assembly connected to the piston to impart to the piston a reciprocating travel, along the cylinder, between a top dead centre position and a bottom dead centre position; the actuator assembly having a belt drive; and the cylinder having a vent hole formed, at most, at % of the travel of the piston, measured from the top dead centre position. 1117241717262824241728131173624) A compressed-air compressor , the compressor () comprising a cylinder (); a piston () mounted to slide along the cylinder () and define , inside the cylinder () , a variable-volume compression chamber (); and actuating means () connected to the piston () to impart to the piston () a reciprocating travel (D) , along the cylinder () , between a top dead centre position and a bottom dead centre position; the actuating means () comprising a belt drive (); and the compressor () being characterized in that the cylinder () has a vent hole () formed , at most , at 60% of the travel (D) of the piston () , measured from the top dead centre position.2361724) A compressor as claimed in claim 1 , wherein the vent hole () in the cylinder () is formed at 40-60% of the travel (D) of the piston () claim 1 , measured from the top dead centre position.3361724) A compressor as claimed in claim 1 , wherein the vent hole () in the cylinder () is formed at 53% of the travel (D) of the piston () claim 1 , measured from the top dead centre position.4282625137511212711) A compressor as claimed in claim 1 , wherein the actuating means () comprise a support (); a motor () fitted to the support () and having an output shaft (); and said belt drive () claim 1 , which comprises a first pulley () fitted to the output shaft () claim 1 , a second pulley () fitted in rotary manner to the support () claim 1 , and an endless belt () looped ...

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Номер записи: 10
15-08-2013 дата публикации

MASTER CYLINDER FOR A MOTOR VEHICLE HYDRAULIC BRAKE SYSTEM

Номер: US20130205772A1
Автор: Jungmann Udo, König Harald, Posch Volker
Принадлежит: Continental Teves AG & Co. oHG

A motor vehicle hydraulic brake system master cylinder, having at least one piston which is arranged in a housing and displaceable along an axis as a result of brake actuation and to which a pressure chamber which can be connected to wheel brakes, and a refill chamber is assigned, wherein the pressure chamber in the non-actuated state can be connected to a fluid reservoir via a compensating bore and on actuation of the brake can be isolated therefrom by means of a cup seal arranged on the piston in order to build up pressure. The master cylinder having a cup seal arranged in a radially open, encircling groove of the piston which groove is formed by a first and a second radially encircling projection, wherein when the brake actuation is released additional fluid is drawn from the refill chamber in the direction of the pressure chamber via the second projection. 15.-. (canceled)6. A master cylinder for a motor vehicle hydraulic brake system , having at least one piston , which is arranged in a housing so that it is displaceable along an axis as a result of a brake actuation and to which a pressure chamber , which can be connected to wheel brakes , and a refill chamber is assigned , wherein the pressure chamber in the non-actuated state can be connected to a fluid reservoir via a compensating bore and on actuation of the brake can be isolated therefrom by means of a cup seal arranged on the piston in order to build up pressure , and the refill chamber is connected to the fluid reservoir via a refill bore , wherein the cup seal , on actuation of the brake , seals off the pressure chamber in the direction of the refill chamber and when the brake actuation is released allows additional fluid to be drawn from the refill chamber in the direction of the pressure chamber , wherein the cup seal is arranged in a radially open , encircling groove of the piston , which groove is formed by a first radially encircling projection and a second radially encircling projection , wherein ...

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Номер записи: 11
12-09-2013 дата публикации

PROPORTIONAL DOSIMETER FOR METERING AN AUXILIARY LIQUID INTO A MAIN LIQUID

Номер: US20130233421A1
Автор: Charriere Christophe, Duquennoy Philippe, Furet Sébastien
Принадлежит: DOSATRON INTERNATIONAL

Proportional dosimeter including a metering body with a main liquid inlet () and an outlet (), a hydraulic motor () housed in the body, actuated by the main liquid, and connected to a plunger piston () that moves in a first chamber (), the piston plunger drawing in fluid in an outbound stroke, a check valve provided to allow liquid to pass to the interior volume of the body when the pressure in the first chamber exceeds a certain pressure, during the return stroke; the dosimeter includes a second chamber () of variable volume bounded by a membrane subjected to the pressure in the first chamber, the second chamber including an intake orifice () for the auxiliary liquid and a delivery orifice () for the auxiliary liquid, this delivery orifice being connected by a pipe () to an injection chamber (S) situated downstream of the outlet of the dosimeter body. 299212. The dosimeter as claimed in claim 1 , characterized in that it is arranged in such a way that the pressure in the interior volume ( claim 1 , .) of the dosimeter body is greater than the sum of the pressure in the injection chamber (S) and of the loss of hydraulic head in the connection between the second chamber () and the injection chamber (S).3323. The dosimeter as claimed in claim 1 , characterized in that a restriction member () is provided downstream of the outlet () of the dosimeter and upstream of the injection chamber (S) in order to create a head loss.4122023. The dosimeter as claimed in claim 1 , characterized in that the second chamber () is equipped with an intake valve () and with a delivery valve ().51276. The dosimeter as claimed in claim 1 , characterized in that the membrane (M) claim 1 , on the opposite side to the second chamber () claim 1 , bounds a space (E) communicating with the first end () of the first chamber ().612131413172023. The dosimeter as claimed in claim 1 , characterized in that the second chamber () is situated in a volume bounded by opposing concavities of a first cup () ...

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Номер записи: 12
19-09-2013 дата публикации

BATTERY-POWERED DOSING DEVICE

Номер: US20130240570A1
Автор: Johansson Daniel L., Pers Per-Erik
Принадлежит: AKTIEBOLAGET ELECTROLUX

Dosing device () for dispensing a specified vol″ ume of liquid, comprising an electromagnet () and being adapted to hold a pump () with a magnetisable pumping member () displaceable under the action of the electromagnet when the pump is held by the dosing device. The dosing device further comprises a portable voltage source () adapted to energise the electromagnet by repeated current pulses and to measure the current intensity at least once per pulse, thereby estimating the charge amount in each pulse, until a total charge amount corresponding to the speci″ fled volume of liquid to be dispensed has been supplied. A method including pulse-wise activation of an electromagnet actuating a pump having a magnetisable pumping member is also disclosed. 1112132152110130150111131151113133153. A method of dispensing a specified volume (V) of liquid using a pump (; ; ) comprising a magnetisable pumping member (; ; ) , which is displaceable under the action of an electromagnet (; ; ) energisable by a portable voltage source (; ; ) , the method comprising the steps of:{'sub': 'tot', '(i) defining a total charge amount (Q) corresponding to the specified volume of liquid;'}(ii) energising the electromagnet by connecting it to the voltage source during a pulse;{'sub': m,n', 'm, '(iii) performing at least one current measurement (I) during the pulse and estimating, based thereon, the charge amount supplied (Q); and'}(iv) repeating steps (ii) and (iii) until the total charge amount has been supplied.2. A method according to claim 1 , wherein each pulse has a predefined maximum duration (T).3. A method according to claim 2 , wherein a pulse is interrupted prematurely if the current is below a predefined minimum threshold current (I).4. A method according to claim 2 , wherein a pulse is interrupted prematurely if a predefined maximum per-pulse charge amount (Q) has been supplied.5. A method according to claim 1 , wherein the interval between two consecutive pulses has a predefined ...

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Номер записи: 13
09-01-2014 дата публикации

System and Method for Pumping Fluid Using a Pump Cassette

Номер: US20140010691A1
Автор: James D. Dale, Richard J. Lanigan
Принадлежит: Deka Products LP

A system and method for pumping fluid using a pump cassette. The system includes a control assembly for operating the pump cassette. A force assembly having a movable member is capable of applying force to the pump cassette to press the pump cassette against the control assembly. The movable member may be an expandable member, such as a bladder.

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Номер записи: 14
27-02-2014 дата публикации

Air driven reductant delivery system

Номер: US20140053537A1
Автор: Baohua Qi, MI Yan
Принадлежит: Individual

A dosing system for delivering reductant to an exhaust gas treatment system of an internal combustion engine using air driven hydraulic pumps for closed-loop controlling reductant pressure and a two-stage PWM control method for controlling dosing rate. Reductant residue in the dosing systems is purged by using compressed air after a dosing process completes, and when the air driven hydraulic pumps are positioned inside a reductant tank, dedicated heating means for the pumps is not necessary. The air driven hydraulic pumps can also use low pressure compressed air, and the closed-loop pressure control together with the two-stage PWM control allow dosing accuracy insensitive to pressure variations in compressed air. These new features enable the dosing system use a variety of compressed air sources, including an engine turbo.

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Номер записи: 15
20-03-2014 дата публикации

Over-Speed Control System and Method

Номер: US20140075930A1
Автор: Dvorak Paul, Maiyur Sudarshan, Ries Michael W.
Принадлежит: CATERPILLAR INC.

A hydraulic power control system includes an engine driving a variable displacement pump. The variable displacement pump is fluidly connected to a first passageway and a second passageway, and has a selectively variable displacement that is adjustable in response to a pump displacement command signal. A hydraulic motor fluidly connected to the first and second passageways operates by a flow of hydraulic fluid originating from the pump. A controller receives an engine speed signal and adjusts pump displacement based on the engine speed signal to reduce the rotation speed of the pump when an overrun condition is present. 1. A hydraulic power control system , comprising:an engine operating at an engine speed, the engine speed sensed by an engine speed sensor providing an engine speed signal;a variable displacement pump connected to and operated by the engine, the variable displacement pump fluidly connected to a first passageway and a second passage way, the variable displacement pump having a selectively variable displacement that is adjusted in response to a pump displacement command signal;a hydraulic motor fluidly connected to the first and second passageways in a closed hydraulic loop with the variable displacement pump, the hydraulic motor operating by a flow of hydraulic fluid originating from the variable displacement pump and passing through the first and second passageways; anda controller associated with the engine and the variable displacement pump, the controller disposed to receive the engine speed signal and to adjust the pump displacement command signal based on the engine speed signal to reduce a rotation speed of the pump and avoid an over-speed condition of the pump when an overrun condition of the engine is indicated by the engine speed signal.2. The hydraulic power control system of claim 1 , wherein the hydraulic motor is a variable displacement hydraulic motor having a selectively variable displacement that is controlled in response to a motor ...

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Номер записи: 16
10-04-2014 дата публикации

INFUSION DEVICE WITH A GROOVED PISTON CHANNEL WALL

Номер: US20140100527A1
Автор: Gray John
Принадлежит: Medtronic Minimed, Inc.

An apparatus for delivering a fluid includes a housing, an inlet in the housing for receiving the fluid, and an outlet in the housing for discharging the fluid. A piston channel is provided within the housing through which the fluid flows from the inlet to the outlet. An actuator is positioned within the housing and is moveable between a retracted position and a forward position, the actuator defining a piston chamber for storing fluid received through the inlet when the actuator is in the retracted position and for driving the fluid stored in the piston chamber toward the outlet when the actuator transitions from the retracted position to the forward position. The actuator includes an armature and a piston coupled to the armature and moveable within the piston channel. The piston channel wall is provided with a groove for conducting fluid from the inlet to the outlet. 1. An apparatus for delivering a fluid , the apparatus comprising:a housing;an inlet in the housing for receiving the fluid;an outlet in the housing for discharging the fluid;a piston channel within the housing through which the fluid flows from the inlet to the outlet, the piston channel having a piston channel wall with at least one groove provided therein; and an armature; and', 'a piston coupled to the armature and moveable within the piston channel, the piston having an outer surface, wherein the at least one groove of the piston channel wall facilitates fluid flow from the inlet to the outlet., 'an actuator positioned within the housing and moveable between a retracted position and a forward position, the actuator defining a piston chamber for storing fluid received through the inlet when the actuator is in the retracted position, the actuator driving the fluid stored in the piston chamber toward the outlet when the actuator transitions from the retracted position to the forward position, the actuator comprising2. The apparatus of claim 1 , wherein the at least one groove comprises a helical ...

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Номер записи: 17
04-01-2018 дата публикации

DRIVING METHOD FOR METERING PUMP, DRIVING APPARATUS FOR METERING PUMP, VAPORIZER, AND ANESTHESIA APPARATUS

Номер: US20180001040A1
Автор: Okita Kazunari
Принадлежит: ACOMA MEDICAL INDUSTRY CO., LTD.

[Problems] To provide a driving method for a metering pump, a driving apparatus for a metering pump, a vaporizer and an anesthesia apparatus which are capable of suppressing a pulsation in the metering pump, and lowering the costs and reducing the sizes of the vaporizer and the anesthesia apparatus. 1. A driving method for a metering pump which includes an eccentric mechanism converting a revolving motion of a motor into a reciprocating motion of a plunger of the metering pump , and makes a constant liquid delivery by sucking and discharging a liquid through variations in the cubic volume of a cylinder of the metering pump caused by the reciprocating motion of the plunger ,wherein a discharge period of the metering pump is set to be longer than a suction period of the metering pump, and the revolution speed of the motor is controlled so that the travelling speed of the plunger is kept constant during the discharge period.2. The driving method for the metering pump according to claim 1 , wherein during the discharge period of the metering pump claim 1 , to vary the revolution speed of the motor in a sinusoidal form at intervals of a predetermined angle so that the motor makes a sinusoidal revolving motion.3. A driving apparatus for a metering pump claim 1 , comprising:a motor;a control section controlling the revolution of the motor; and 'wherein the control section sets a discharge period of the metering pump to be longer than a suction period of the metering pump, and controls the revolution speed of the motor so that the travelling speed of the plunger is kept constant during the discharge period.', 'a metering pump joined to the motor, the metering pump including an eccentric mechanism converting a revolving motion of the motor into a reciprocating motion of a plunger of the metering pump, and making a constant liquid delivery by sucking and discharging a liquid through variations in the cubic volume of a cylinder of the metering pump caused by the reciprocating ...

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Номер записи: 18
04-01-2018 дата публикации

Double-Chamber Piston Pump for the Distribution of Fluid Products

Номер: US20180003164A1
Автор: AVANZI Roberto
Принадлежит:

A piston pump is disclosed suitable to be installed on machines for dispensing fluid products, comprising a jacket, a piston device mobile with alternate motion inside said jacket and comprising a rod and a head. The pump also comprises a pipe for fluids to enter and a pipe for fluids to exit, said pipes being disposed on the same side of the jacket and on opposite sides with respect to the piston device. 1. A piston pump suitable to be installed on machines for dispensing fluid products , comprising a jacket , a piston device mobile with alternate motion inside said jacket and comprising a rod and a head , the pump also comprising a pipe for fluids to enter and a pipe for fluids to exit , said pipes being disposed on the same side of the jacket and on opposite sides with respect to said piston device , wherein the piston pump comprises two chambers with the same containing volume for said fluid product , said two chambers being defined on opposite sides of said head of the piston device , each of said chambers being connected to said entrance and exit pipes by means of respective valves , wherein the suction valve and the delivery valve connected to the first chamber are disposed on opposite sides with respect to said piston device , and the suction valve and the delivery valve connected to the second chamber are disposed symmetrical and specular with respect to said valves connected to the first chamber.2. The piston pump as in claim 1 , wherein said jacket is configured so as to have a bore that goes from 35 mm to 45 mm claim 1 , or from 50 mm to 60 mm.3. The piston pump as in claim 1 , wherein said rod has a diameter with respect to the bore of the jacket with a ratio no higher than 0.25.4. The piston pump as in claim 1 , wherein the piston device has a travel inside said jacket that goes from 10 mm to 15 mm.5. The piston pump as in claim 1 , wherein said head is made of PTFE or other suitable material.6. The piston pump as in claim 1 , wherein said piston ...

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Номер записи: 19
02-01-2020 дата публикации

PUMP BASED FLUID FLOW METER

Номер: US20200003202A1
Автор: Levine Noam
Принадлежит:

A fluid flow meter comprising a fluid pump to displace fluid with pumping strokes of one or more pumping stroke types wherein each of the one or more stroke types displaces a known volume of fluid, a sensor functionally associated with a fluid reservoir and adapted to generate a signal indicative of a fluid pumping condition within the fluid reservoir, which fluid reservoir is integral or functionally associated with the pump, and circuitry to trigger one or a sequence of strokes of the pump in response to a signal from the sensor. 1. A method of metering fluid flow from a fluid source , said method comprising:receiving at an inlet of a fluid reservoir fluid from the fluid source and altering a shape of a flexible reservoir component in response to an amount of fluid received within said reservoir, such that different states of said flexible component are characterized by different volumes of said reservoir,sensing a pumping condition in the reservoir through a physical sensor adapted to sense a parameter of fluid within the reservoir;generating a signal when the sensed parameter indicates a pumping condition relating to the fluid within the fluid reservoir has been met;triggering a pre-defined cycle of one or more strokes of a pump in response to the generated signal, wherein each pre-defined cycle of strokes displaces a known volume of fluid;each time the pre-defined cycle is triggered, displacing a known amount of fluid from the reservoir through an output of the reservoir while the inlet remains connected to the fluid source;storing a count of triggered pre-defined cycles; andcalculating a fluid flow into the reservoir based on the stored count of triggered cycles and based on the known amount of fluid associated with each triggered cycle of strokes.2. The method of claim 1 , wherein the pumping condition is a fluid amount in said reservoir reaching or exceeding an upper threshold.3. The method according to claim 1 , wherein the triggered pump is a peristaltic ...

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Номер записи: 20
07-01-2021 дата публикации

MULTI-PRESSURE INTEGRATED AIR PUMP

Номер: US20210003120A1
Автор: Huang Zhi Xiong, Lin Zheng Wen, Zhang Ying Biao
Принадлежит:

A high and low-pressure integrated air pump includes a single housing including an air inlet and an air outlet. A high-pressure pump is disposed within the housing and in fluid communication with the air inlet, and uses a first outlet passage to discharge to the air outlet. A low-pressure pump is also disposed within the housing and in fluid communication with the air inlet, and uses a second outlet passage to discharge to the air outlet. 1. A high and low-pressure integrated air pump , comprising:a housing including an air inlet and an air outlet;a high-pressure pump disposed within the housing, in fluid communication with the air inlet and in fluid communication with the air outlet via a first outlet passage; anda low-pressure pump disposed within the housing, in fluid communication with the air inlet and in fluid communication with the air outlet via a second outlet passage.2. The high and low-pressure integrated air pump of claim 1 , wherein the low-pressure pump is disposed between the high-pressure pump and the air inlet.3. The high and low-pressure integrated air pump of claim 1 , wherein the low-pressure pump is an impeller pump including a motor and an impeller.4. The high and low-pressure integrated air pump of claim 1 , wherein the high-pressure pump and the low-pressure pump both include at least one check valve.5. The high and low-pressure integrated air pump of claim 1 , wherein the high-pressure pump is a diaphragm pump including a motor and a diaphragm.6. The high and low-pressure integrated air pump of claim 5 , wherein the motor reciprocates the diaphragm via a worm gear and a spur gear.7. The high and low-pressure integrated air pump of claim 5 , wherein the motor reciprocates the diaphragm via a pair of toothed gears.8. The high and low-pressure integrated air pump of claim 1 , further comprising a power supply operably connected to respective motors of the high-pressure pump and the low-pressure pump.9. The high and low-pressure integrated air ...

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Номер записи: 21
14-01-2021 дата публикации

WELLBORE HYDRAULIC FRACTURING THROUGH A COMMON PUMPING SOURCE

Номер: US20210010363A1
Автор: DUSTERHOFT Ronald Glen, HARPOLD, INYANG Ubong, JR. Kurt Rohrbough, KRIEBEL Oscar Andres Cabada, SMITH Jonathan
Принадлежит: Halliburton Energy Services, Inc.

Aspects of the subject technology relate to systems and methods for pumping multiple wellbores from a common pumping source. A fluid pump of known operating pump capacity can be selected. The pump can be fluidly connected to a common pumping source that is fluidly connected with each of a plurality of cased wellbores in a subterranean formation for providing pumped fracturing fluid to each of the wellbores. Each of the plurality of wellbores can have at least one perforation through a casing of the wellbore with a known rate range within which fracturing fluid is required to be provided to the perforation to successfully fracture the subterranean formation outside the perforation, through the perforation. Further, the wellbores can be configured so that the common pumping source provides fracturing fluid to each of the perforations within the known rate range of the respective perforation to successfully fracture the subterranean formation. 1. A method for conducting a hydraulic fracturing job on a plurality of wellbores in a subterranean formation utilizing a common pumping source , the method comprising:selecting a fluid pump of known operating pump capacity, wherein the operating pump capacity is measurable in barrels per minute;fluidly connecting the pump to a common pumping source that is fluidly connected with each of a plurality of cased wellbores in a subterranean formation for providing pumped fracturing fluid to each of the wellbores;wherein each of the plurality of wellbores has at least one perforation through a casing of the wellbore and each perforation has a known rate range within which fracturing fluid is required to be provided to the perforation to successfully fracture the subterranean formation outside the perforation, through the perforation; andwherein the wellbores constituting the plurality of wellbores that are fluidly connected to the common pumping source are configured so that the common pumping source provides fracturing fluid to each ...

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Номер записи: 22
14-01-2021 дата публикации

TRAILER-MOUNTED METERED PUMPING SYSTEM

Номер: US20210010465A1
Автор: Hancock, JR. Douglas L., Pew Jacob R.
Принадлежит:

A trailer-mounted pumping system includes a flatbed trailer having a generally flat deck surface, a pump, a batch controller, and a metering device in electronic communication with the batch controller, wherein the pump is configured to move a liquid from at least one tote supported by the generally flat deck surface to a location off-board the flatbed trailer, and the batch controller is configured to measure a volume of the liquid via the metering device. The pump, the metering device, and/or the batch controller may be disposed beneath the generally flat deck surface. 1. A trailer-mounted pumping system , comprising:a flatbed trailer having a generally flat deck surface;a pump;a batch controller; anda metering device in electronic communication with the batch controller;wherein the pump is configured to move a liquid from at least one tote supported by the generally flat deck surface to a location off-board the flatbed trailer, and the batch controller is configured to measure a volume of the liquid via the metering device.2. The trailer-mounted pumping system of claim 1 , wherein at least one of the pump claim 1 , the batch controller claim 1 , and the metering device is disposed beneath the generally flat deck surface.3. The trailer-mounted pumping system of claim 2 , further comprising a first housing mounted beneath the deck surface claim 2 , wherein the batch controller and the metering device are disposed in the first housing.4. The trailer-mounted pumping system of claim 3 , further comprising a second housing mounted beneath the deck surface claim 3 , wherein the pump is disposed in the second housing.5. The trailer-mounted pumping system of claim 3 , further comprising a power converter configured to supply electric power to the batch controller and the metering device.6. The trailer-mounted pumping system of claim 5 , wherein the power converter receives the electric power from a trailer auxiliary power line.7. The trailer-mounted pumping system of ...

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Номер записи: 23
14-01-2021 дата публикации

DOSING PUMP SYSTEM

Номер: US20210010469A1
Автор: Ubidia Fernando A.
Принадлежит:

A compact, modular dosing pump system that is capable of microdose and macrodose volume flow rates, reduces or eliminates the need for additional flow control components such as temperature and pressure sensors, and utilizes a wider operational flow range than existing systems while maintaining the level of accuracy and precision exhibited by conventional dosing pump systems is provided. The dosing pump utilizes a a control system to deliver a range of fluid volumes. The control system monitors the motor emf voltage, calculates the flow rate, and makes adjustments to the pump motor voltage to precisely maintain the desired flowrate. 1. A pump system comprising: an inlet port;', 'an inlet flow channel providing fluid communication from the inlet port to the pump input;', 'an output flow channel in fluid communication with the pump output;', 'a bypass flow orifice;', 'a bypass loop valve, wherein the output flow channel provides a fluid path from the pump output to the bypass loop valve and the bypass loop valve is disposed downstream from the bypass flow orifice;', 'a return channel disposed downstream from the bypass loop valve, wherein the return channel is connected to the inlet flow channel and forms a fluid pathway between the bypass loop valve and the inlet flow channel;', 'an outlet branch connected to the output flow channel upstream from the bypass flow orifice;', 'an outlet flow orifice;', 'an outlet branch valve, wherein the outlet branch provides a fluid pathway from the pump output to the outlet branch valve and the outlet branch valve is disposed downstream from the outlet flow orifice; and', 'an outlet port disposed downstream from the outlet branch valve., 'a fluid pump having an pump input and a pump output in fluid communication with a fluid flow circuit wherein said flow circuit comprises2. The pump system of wherein claim 1 , the outlet flow orifice is connected to the outlet branch valve.3. The pump system of wherein claim 1 , the bypass flow ...

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Номер записи: 24
09-01-2020 дата публикации

METERING PUMP AND METHOD FOR CONTROLLING A METERING PUMP

Номер: US20200011309A1
Автор: Gerz Sergei, KECHLER Valeri
Принадлежит:

A Metering pump includes a displacement element (), a drive system with an electric drive motor () driving the displacement element () and a control device () controlling the electric drive motor (). The control device () is configured in such a manner that it detects the current position of the displacement element (), detects the torque (M) of the electric drive motor () at several positions of the displacement element () and monitors the torque (M) in relation to the position of the displacement element (), and a method for controlling such metering pump. 1. A metering pump comprising:a displacement element;a drive system comprising an electric drive motor driving said displacement element and a control device controlling said electric drive motor, wherein said control device is configured to:detect a current position of the displacement element;detect a torque of the electric drive motor or to detect a drive force acting on the displacement element at several positions of the displacement element; andmonitor the torque or force in relation to the position of the displacement element.2. A metering pump according to claim 1 , wherein said displacement element is a membrane or a piston.3. A metering pump according to claim 1 , wherein said drive system further comprises an eccentric drive coupled to the displacement element and driven by the electric drive motor.4. A metering pump according to claim 1 , wherein the electric drive motor is a brushless DC motor or a stepping motor.5. A metering pump according to claim 1 , wherein at least one position sensor detects the position of the displacement element and is connected to said control device.6. A metering pump according to claim 1 , wherein at least one sensor detects a rotational angle of the electric drive motor.7. A metering pump according to claim 1 , wherein the control device is configured to detect the torque or the force along an entire travel of the displacement element.8. A metering pump according to ...

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Номер записи: 25
03-02-2022 дата публикации

Fluid device

Номер: US20220032336A1
Автор: Hannes Wirtl, Martin Maichl
Принадлежит: Festo SE and Co KG

A fluid device with a fluid chamber, the fluid device including a fluid chamber which is designed for receiving a fluid and which is commonly delimited by a device housing and a bending-elastic membrane element. The membrane element is fixed with a peripheral edge region to the device housing, wherein a membrane working section of the membrane element which is framed by the peripheral edge region can be deflected by a piezoactuator whilst carrying out a stroke movement, in order to change the volume of the fluid chamber. The membrane element is a functional constituent of the piezoactuator by way of it directly forming an electrically conductive electrode of the electrode arrangement of the piezoactuator.

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Номер записи: 26
03-02-2022 дата публикации

COMBINATION METERING ASSEMBLY FOR FILLING LIQUID PRODUCTS INTO CONTAINERS

Номер: US20220033115A1
Автор: Bauer Harald, Kleinheinz Fabian
Принадлежит: BAUSCH + STRÖBEL MASCHINENFABRIK ILSHOFEN GMBH + CO. KG

The invention relates to a combination metering assembly for filling liquid products into containers. The invention is characterised by a base unit () and pump components () of at least two different pump types for a metering operation, wherein the pump components of each pump type can be combined with the base unit in order to form a pump system of the corresponding pump type, and the base unit has connection means () for this purpose which are compatible with the connections of the pump components. The combination metering assembly can be adapted to different metering situations with little complexity and has a comparably small space requirement. 1. A combination metering assembly for filling liquid products into containers , comprising: wherein the pump components of each pump type are combinable with the base unit in order to form a pump system of a corresponding pump type,', 'wherein the base unit comprises connection means for combining the pump components of each pump type with the base unit, the connection means being compatible with connections of the pump components,', 'wherein pump components of a first pump type and pump components of at least one pump type other than the first pump type are combinable with the base unit at a same time to configure at least two operational pump systems; and, 'a base unit and pump components of at least two different pump types for a metering operation,'}a controllable switching device by means of which each of the pump systems to be configured are selectable for operation.2. The combination metering assembly of claim 1 ,wherein the pump types comprise at least one of a rotary lobe pump and a peristaltic pump.3. The combination metering assembly of claim 1 , wherein the pump components comprise pump drive components and fluid delivery components to be driven by the pump drive components for the pumping operation.4. The combination metering assembly of claim 3 , wherein the base unit further comprises a first connection ...

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Номер записи: 27
16-01-2020 дата публикации

DUAL PUMP CONFIGURATION FOR FLUID TRANSFER AND METERING

Номер: US20200018297A1
Автор: Fisher Chad Adam, Kramer Cameron Michael, Lucas Bryan Chapman, Stegemoeller Calvin Lynn, Warren Wesley John
Принадлежит:

An apparatus includes a primer pump having a pneumatic power inlet, a fluid inlet coupled to receive a fluid from a fluid source and a fluid outlet to output the fluid in response to a pressure at the fluid outlet being less than a pressure at the pneumatic power inlet. The apparatus includes a liquid additive pump having a fluid inlet coupled to the fluid outlet of the primer pump to receive the fluid, wherein the primer pump is to apply a positive pressure at the fluid inlet of the liquid additive pump. 1. An apparatus comprising:a primer pump having a pneumatic power inlet, a fluid inlet coupled to receive a fluid from a fluid source and a fluid outlet to output the fluid in response to a pressure at the fluid outlet being less than a pressure at the pneumatic power inlet; anda liquid additive pump having a fluid inlet coupled to the fluid outlet of the primer pump to receive the fluid, wherein the primer pump is to apply a positive pressure at the fluid inlet of the liquid additive pump.2. The apparatus of claim 1 , wherein the primer pump is a pneumatically powered claim 1 , dual diaphragm pump.3. The apparatus of claim 2 , wherein the pneumatically powered claim 2 , dual diaphragm pump includes a cycle counter that is to increment a counter value after at least one of each pump cycle and each half pump cycle claim 2 , and wherein the pneumatically powered claim 2 , dual diaphragm pump is to output a pump cycle volume of the fluid through the fluid outlet for at least one of each pump cycle and each half pump cycle.4. The apparatus of claim 3 , wherein a computer device is communicatively coupled to the apparatus claim 3 , wherein the computer device comprises claim 3 ,a processor; anda machine-readable medium having program code executable by the processor to cause the computer device to determine a volume output from the fluid outlet of the pneumatically powered, dual diaphragm pump during a defined time period based on the counter value and the pump cycle ...

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Номер записи: 28
16-01-2020 дата публикации

LIQUID PRESSURE ROTARY MACHINE

Номер: US20200018298A1
Автор: Maekawa Satoshi, MORITA Kei, SUGANO Naoki
Принадлежит: Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)

A liquid pressure rotary machine in which a rotation delay of a retainer with respect to a cylinder block is reduced and contact of pistons placed between the retainer and the cylinder block with peripheral members is suppressed is provided. 1. A variable capacity type liquid pressure rotary machine comprising:a housing;a rotation shaft rotatably and axially supported by the housing;a cylinder block including plural cylinders arranged and spaced from each other about the rotation shaft, the cylinder block to be rotated about the center axis of the rotation shaft integrally with the rotation shaft;plural pistons respectively housed in the plural cylinders of the cylinder block, the pistons that make reciprocating motion in accordance with rotation of the cylinder block along the axial direction of the rotation in the cylinder;a retainer bushing including a bushing outer peripheral surface which is formed in a spherical surface shape projected toward the radially outside in rotation of the rotation shaft, the retainer bushing being supported on the rotation shaft so as to be rotatable about the center axis together with the rotation shaft;a retainer including a retainer inner peripheral surface which is formed in a recessed spherical surface shape arranged to oppose the bushing outer peripheral surface, the retainer being supported by the retainer bushing so as to be swingable about the axis orthogonal to the rotation shaft;plural piston rods arranged to extend in the axial direction, the piston rods that respectively connect the plural pistons and the retainer, and rotate the retainer about the center axis in conjunction with rotation of the plural pistons about the center axis;a swash plate arranged to oppose the retainer on the axially opposite side to the cylinder block, the swash plate being supported by the housing so as to be swingable about the axis;a thrust bearing placed between the swash plate and the retainer in the axial direction, the thrust bearing that ...

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Номер записи: 29
26-01-2017 дата публикации

DUAL SYRINGE FLUID PUMP

Номер: US20170021951A1
Автор: Teague Robert R.
Принадлежит: Norgren Kloehn, Inc.

A dual syringe fluid pump () includes a motor () with a rotatable shaft (), a first syringe () with a first syringe plunger () coupled to the rotatable shaft (), and a second syringe () with a second syringe plunger () coupled to the rotatable shaft (). The motor () rotates the rotatable shaft () to simultaneously move the first syringe plunger () and the second syringe plunger () and at least one of the syringes () is adapted to convert the rotation of the rotatable shaft () to a linear movement of at least one of the syringe plungers (). 1100200300400. A dual syringe fluid pump ( , , , ) comprising:{'b': 110', '210', '310', '410', '112', '212', '312', '412, 'a motor (, , , ) with a rotatable shaft (, , , );'}{'b': 120', '220', '320', '420', '122', '222', '322', '422', '112', '212', '312', '412, 'i': a,', 'a,', 'a,', 'a', 'a,', 'a,', 'a,', 'a, 'a first syringe () with a first syringe plunger () coupled to the rotatable shaft (, , , ); and'}{'b': 120', '220', '320', '420', '122', '222', '322', '422', '112', '212', '312', '412, 'i': b,', 'b,', 'b,', 'b', 'b,', 'b,', 'b,', 'b, 'a second syringe () with a second syringe plunger () coupled to the rotatable shaft (, , , );'}{'b': 110', '210', '310', '410', '112', '212', '312', '412', '122', '222', '322', '422', '122', '222', '322', '422, 'i': a,', 'a,', 'a,', 'a', 'b,', 'b,', 'b,', 'b, 'wherein the motor (, , , ) rotates the rotatable shaft (, , , ) to simultaneously move the first syringe plunger () and the second syringe plunger (); and'}{'b': 120', '220', '320', '420', '112', '212', '312', '412', '122', '222', '322', '422, 'i': a,b', 'a,b', 'a,b', 'a,b', 'a,b', 'a,b', 'a,b', 'a,b, 'at least one of the syringes () is adapted to convert a rotation of the rotatable shaft (, , , ) to a linear movement of at least one of the syringe plungers ().'}2100120124124122112122a,bacba,ba,b. The dual syringe fluid pump () of wherein at least one of the syringes () further comprises a barrel () with a center bore () having a profile ...

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Номер записи: 30
24-01-2019 дата публикации

BLOOD TREATMENT DEVICE COMPRISING A METERING LINE HAVING A MEMBRANE PUMP AND A VALVE AND METHOD FOR METERING

Номер: US20190022297A1
Автор: Peters Arne
Принадлежит: FRESENIUS MEDICAL CARE DEUTSCHLAND GMBH

The invention relates to a blood treatment device having at least one metering line which opens into a fluid circuit, wherein a conveyor module is arranged in the metering line and comprises a membrane pump and a valve which is arranged at the pressure side thereof and which can act both as a blocking valve and as a restricting valve. 11. A blood treatment device having at least one metering line () which opens into a fluid circuit , characterized in that{'b': 3', '1', '4', '5, 'a conveyor module () is arranged in the metering line () and comprises a membrane pump () and a valve () which is arranged at the pressure side thereof and which can act both as a blocking valve and as a restricting valve.'}2. A blood treatment device in accordance with claim 1 , characterized in that the blood treatment device is a dialysis device.311. A blood treatment device in accordance with claim 1 , characterized in that the metering line () is a metering line () for a solution of a coagulation-inhibiting agent which opens into an extracorporeal blood circuit of the blood treatment device.44511. A blood treatment device in accordance with claim 1 , characterized in that the membrane pump () and/or the valve () is/are operated pneumatically and is/are preferably connected to a common pneumatic module ().545123. A blood treatment device in accordance with claim 1 , characterized in that the membrane pump () and the valve () are arranged in a common housing () of the conveyor module ().612131415. A blood treatment device in accordance with claim 5 , characterized in that the housing () comprises at least two parts which are releasably fastened to one another claim 5 , wherein a first part ( claim 5 , ) comprises the pump mechanism and the valve mechanism and a second part () defines at least one section of the fluid-conducting vessel of the metering line.71045115484. A blood treatment device in accordance with claim 1 , characterized in that it furthermore has a control unit () which ...

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Номер записи: 31
10-02-2022 дата публикации

HIGH-VISCOSITY FLUID DOSE ISOLATORS

Номер: US20220042500A1
Автор: Harari Yinon, Seemann Ziv, Yekymov Alexander
Принадлежит: Hewlett-Packard Development Company, L.P.

In one example, a fluid delivery system () comprises a pump cavity () to receive a high-viscosity fluid, such that when full, the pump cavity () is to define a dose of high-viscosity fluid. The system () further comprises an access () to the pump cavity (), to provide fluid communication with the pump cavity (), and a plunger () to block the access () to the pump cavity () and isolate the dose of the high-viscosity fluid for ejection of the dose by the plunger (). 1. A method comprising:providing a pump cavity that is full of a high-viscosity fluid;advancing a plunger in fluid communication with the pump cavity; andblocking, by the plunger, an access to the pump cavity, to isolate a dose of the high-viscosity fluid to be ejected from the pump cavity by the plunger.2. The method of claim 1 , wherein the advancing comprises advancing the plunger with respect to the access to progressively restrict the access by movement of the plunger across the access.3. The method of claim 1 , wherein the advancing comprises advancing the plunger in a chamber comprising the pump cavity and the access.4. The method of claim 1 , wherein the providing comprises determining the pump cavity is full of the high-viscosity fluid according to information of a characteristic of the high-viscosity fluid.5. The method of claim 4 , wherein the characteristic of the high-viscosity fluid is a pressure of the high-viscosity fluid and the information is a current pressure of the high-viscosity fluid away from the pump cavity.6. The method of claim 1 , wherein the providing comprises increasing a pressure of the high-viscosity fluid in the pump cavity by exerting force claim 1 , by a driving member claim 1 , on a passageway that is fluidly connected to the pump cavity by the access.7. The method of claim 6 , wherein the providing comprises filling the pump cavity under pressure claim 6 , by the force exerted on the high-viscosity fluid outside of the pump cavity by a pressurizer claim 6 , as the ...

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Номер записи: 32
24-01-2019 дата публикации

Synchronization of Supply Flow Paths

Номер: US20190024647A1
Автор: Shoykhet Konstantin, Witt Klaus
Принадлежит:

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 to a mixing unit, the first pump unit operating periodically, and a second supply flow path with a second pump unit, the second supply flow path being adapted for supplying a flow of a second solvent to the mixing unit, the second pump unit operating periodically. The mixing unit is adapted for mixing the first and the second solvent and for supplying a composite solvent. The solvent supply system further comprises a control unit adapted for controlling operation of the first and the second pump unit, the control unit being adapted to prevent at least one of a predefined phase relation and a predefined frequency relation between the first pump unit and the second pump unit. 1. A chromatographic gradient pump system for supplying a composite solvent having a varying ratio of a first solvent and a second solvent as a function of time , the gradient pump system comprising:a first supply flow path comprising a first pump unit having a first reciprocating piston, the first supply flow path configured to supply a flow of the first solvent;a second supply flow path comprising a second pump unit having a second reciprocating piston, the second supply flow path configured to supply a flow of the second solvent;a mixing unit being configured to mix the flow of the first solvent and the flow of the second solvent to supply the composite solvent; anda control unit configured to coordinate operation of the first pump unit and of the second pump unit relative to each other by changing a piston stroke of at least one of the first and second reciprocating pistons to prevent an unfavorable phase relation of the first pump unit and the second pump unit.2. The pump system of claim 1 , wherein the unfavorable phase relation comprises at least one of: ...

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Номер записи: 33
28-01-2021 дата публикации

NON-PULSATING PUMP AND METHOD OF CONTROLLING THE SAME

Номер: US20210025375A1
Автор: MURAKOSHI Fusao
Принадлежит: NIKKISO CO., LTD.

When a pipe pressure of a common discharge pipe during an independent discharge step in which only one reciprocating pump among a plurality of reciprocating pumps discharges a fluid to the common discharge pipe differs from internal pressures in pump chambers of the respective reciprocating pumps at discharge step start point angles, a stroke adjustment mechanism adjusts, on the basis of a pressure difference ΔP therebetween, effective stroke lengths of cross heads connected to plungers of the predetermined reciprocating pumps so that the internal pressures in the pump chambers reach the pipe pressure at the discharge step start point angles. 1. A non-pulsating pump comprising:a drive mechanism having: a cam mechanism which converts a rotational motion of a drive motor into a reciprocating motion; and a plurality of crossheads which are reciprocated by the cam mechanism with a predetermined phase difference;a plurality of reciprocating pumps, each having: a plunger which is connected to the crosshead and which reciprocates with the reciprocating motion of the crosshead; a pump chamber having an inner pressure which changes with the reciprocating motion of the plunger; an intake valve which connects a common intake line and the pump chamber, and which has a side of the pump chamber as a back pressure side; and a discharge valve which connects the pump chamber and a common discharge line, and which has a side of the common discharge line as a back pressure side; anda stroke adjustment mechanism that adjusts an effective stroke length for the crosshead to reciprocate the plunger, whereinwhen a line pressure of the common discharge line at a single discharge step in which only one reciprocating pump, among the plurality of reciprocating pumps, discharges fluid to the common discharge line differs from the inner pressure of the pump chamber of a predetermined reciprocating pump at a discharge step starting point angle determined corresponding to a cam angle of the cam ...

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Номер записи: 34
29-01-2015 дата публикации

MULTICELLULAR PUMP AND FLUID DELIVERY DEVICE

Номер: US20150030482A1
Автор: Mayer Felix
Принадлежит:

The pump is provided with a plurality of pumping chambers and electrically activatable valves. An elastic membrane is arranged in each pumping chamber and divides the same into a first and a second chamber section. Each valve is connected to the second chamber section of a pumping chamber. When a pressure drop is applied over the valve and the valve is activated (i.e. opened), the pressure in the second chamber section changes, which causes the membrane to move, which in turn leads to a change of the volumes of both chamber sections. This e.g. allows to pump well-defined amounts of fluid from the chamber sections to a drug dispensing device. 1. A multicellular pump , in particular a multicellular fluid delivery device , comprisinga reservoir holding the fluid to be delivered,a plurality of pumping chambers,a deformable membrane arranged in each pumping chamber dividing the pumping chamber into a first and a second chamber section,a channel connected to all said first chamber sections,a plurality of elastic energy storage means, each of said energy storage means being retained by an electrically releasable retaining mechanism in an elastically deformed state and being releasable by an electric signal to relax from said deformed state to a relaxed state,wherein by releasing said energy storage means said membrane is moved from a first position to a second position thereby decreasing a volume of said first chamber section and increasing a volume of said second chamber section, andwherein said reservoir is formed by said first chamber sections,wherein said retaining mechanisms are formed by a plurality of electrically activatable valves, each valve being connected to one of said second chamber sections, such that the membrane separating the first chamber section from the second chamber section is movable by activating said valve in the presence of a pressure drop over said valve, andwherein each valve comprises a thermally removable blocking body and a heating means ...

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Номер записи: 35
29-01-2015 дата публикации

Device for supplying and metering a fluid for medicinal purposes

Номер: US20150032055A1
Автор: Dietmar Eberhard
Принадлежит: B Braun Melsungen AG

A device is described for supplying and metering a fluid for medical purposes, at least comprising one pump for pumping the fluid and at least one element through which the fluid is conveyed. At least one recess is provided in the element, which is tightly covered by a sensor component composed of a pressure sensitive material, wherein the material of the element is harder than that of the sensor component. The apparatus also has a force sensor with which pressure-induced changes of the sensor component in the region of the recess can be measured.

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Номер записи: 36
02-02-2017 дата публикации

Fluid Dose Dispensing Apparatus

Номер: US20170030592A1
Автор: Kevin Abbott
Принадлежит: Individual

An apparatus for dosing a fluid flow system with treatment fluid/chemicals is described. The apparatus includes a vessel; an inlet pipe or hose and an outlet pipe for coupling to the system so that fluid from the system may flow into the vessel and return into the system to flush chemicals from within the vessel and into the system. The vessel has a piston within it and the vessel wall defines a cylinder in which the piston moves under pressure of incoming fluid from a first position at which the vessel contains fluid to be dispensed into the system to a second position corresponding to substantially complete emptying of the vessel. The piston has a bypass passage through or around it that opens when the piston substantially reaches the second position so that fluid from the system may flow passed the piston when the piston is at the second position.

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Номер записи: 37
04-02-2016 дата публикации

Liquid dispensing devices and methods of controlling the same

Номер: US20160032909A1
Автор: Allan James Clarke, Colin David Bain, Frederick Henry Fiesser, Lisong YANG, Nikil KAPUR
Принадлежит: GlaxoSmithKline Intellectual Property No 2 Ltd

The present disclosure provides a method of dispensing liquid, and a liquid dispensing device. The method and device include a controller having a multi-phase droplet ejection cycle stored thereon. The multiphase droplet ejection cycle dispenses the droplet in two stages. Advantageously, this provides highly accurate droplets of very small volumes without the formation of satellite droplets.

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Номер записи: 38
17-02-2022 дата публикации

Pump-Based Fluid Flow Meter

Номер: US20220049687A1
Автор: Levine Noam
Принадлежит:

A fluid flow meter comprising a fluid pump to displace fluid with pumping strokes of one or more pumping stroke types wherein each of the one or more stroke types displaces a known volume of fluid, a sensor functionally associated with a fluid reservoir and adapted to generate a signal indicative of a fluid pumping condition within the fluid reservoir, which fluid reservoir is integral or functionally associated with the pump, and circuitry to trigger one or a sequence of strokes of the pump in response to a signal from the sensor. 1. A method for controlling a pump , comprising:connecting the pump to an outlet of a fluid reservoir, which has an inlet connected to a fluid source and which stretches and contracts in response to changes in a volume of the fluid within the reservoir;sensing a pressure of the fluid in the fluid reservoir using a sensor coupled to the outlet of the fluid reservoir; andusing a controller coupled to the sensor, activating the pump when the sensed pressure reaches a defined threshold to displace a known volume of the fluid from the fluid reservoir.2. The method according to claim 1 , wherein the pump is activated when the pressure reaches an upper threshold claim 1 , and wherein the method comprises continuing to activate the pump until the sensed pressure falls below a lower threshold.3. The method according to claim 2 , and comprising counting a number of cycles of the pump over a period of time claim 2 , wherein the cycles displace respective cycle volumes claim 2 , and calculating a rate of flow of the fluid through the outlet from the fluid reservoir based on the counted number and the cycle volumes.4. The method according to claim 1 , wherein the pump comprises a positive-displacement pump.5. The method according to claim 1 , wherein the pump comprises a pneumatic actuator.6. The method according to claim 1 , wherein the pump comprises a movable diaphragm.7. The method according to claim 1 , wherein the pump comprises a piston.8. The ...

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Номер записи: 39
30-01-2020 дата публикации

Method and device for cleaning a channel using a diaphragm pump module

Номер: US20200032784A1
Автор: Jerzy Domeracki
Принадлежит: Otek Engineering Jerzy Domeracki

A method and an apparatus for cleaning a channel, especially a transmission and/or cooling channel, in any type of device, machine, installation, and/or tool, particularly in any type of heat exchanger and/or a molding core, cavity and/or insert is proposed, wherein a channel is cleaned through dynamic, bi-directional pulsation of cleaning medium inside the to-be-cleaned channel, the method being realized by a cleaning apparatus equipped with a diaphragm pump module, plugged either only in the feed side of the transmission line or in the feed side and in the return side, which, after connecting the diaphragm pump module to the external energy source and shutting off the flow control system from the reservoir and the feed pump, allows for putting cleaning medium into a state of two-way dynamic pulsating motion.

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Номер записи: 40
09-02-2017 дата публикации

PUMP ACTUATOR AND METHOD FOR PUMP OPERATION

Номер: US20170037839A1
Автор: MAGUIRE Stephen B.
Принадлежит:

Method and apparatus for controlling a moveable pumping diaphragm and a liquid color diaphragm pump, including a housing, a movable pin slidably residing within the housing, a potentiometer connected to and residing within the housing for sensing movement of the pin, riding against the diaphragm of the pump and a spring for biasing the pin against the diaphragm. 1) A method for operating a pump having a movable pumping member and a pumping chamber , comprising:a) positioning a movable reciprocable member in contact with the pumping member to move reciprocally in concert with the pumping member;b) sensing position of the reciprocable member and producing signals indicative thereof;c) periodically applying force to the pumping member to move the pumping member and thereby effectuate pumping of fluid from the chamber;d) using the signals to regulate frequency of force application to the pumping member to achieve a preselected rate of output from the pump.2) The method of further comprising:a) recording the signals at the extremities of reciprocable member travel;b) using those signals and known length of reciprocable member travel to determine location of the reciproable member based on signal received at a given time;c) adjusting the frequency of application of force to the pumping member according to the location of the reciprocable member to maintain a desired output from the pump.3) The method of wherein the step of using those signals and known length of reciprocable member travel to determine location of the reciproable member based on signal received at a given time further includes determining the relationship between duration of force application to the pumping member and pumping member displacement.4) The method of wherein the pumping member is a diaphragm.5) The method of wherein the sensing is performed by a potentiometer.6) The method of wherein the force is pneumatically applied.7) The method of wherein the pumping chamber is air-tight.8) The method of ...

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Номер записи: 41
08-02-2018 дата публикации

PUMPING CASSETTE

Номер: US20180038357A1
Автор: Dale James D., Demers Jason A., Grant Kevin L., Tracey Brian D., Wilt Michael J.
Принадлежит: DEKA Products Limited Partnership

A pumping cassette including a housing having at least two inlet fluid lines and at least two outlet fluid lines. At least one balancing pod within the housing and in fluid connection with the fluid paths. The balancing pod balances the flow of a first fluid and the flow of a second fluid such that the volume of the first fluid equals the volume of the second fluid. The balancing pod also includes a membrane that forms two balancing chambers. Also included in the cassette is at least two reciprocating pressure displacement membrane pumps. The pumps are within the housing and they pump the fluid from a fluid inlet to a fluid outlet line and pump the second fluid from a fluid inlet to a fluid outlet. 1. (canceled)2. A fluid-balancing cassette comprising:a first and a second fluid-balancing pod, each chamber pod having a first port separated from an opposing second port by a flexible membrane, the flexible membrane dividing the fluid-balancing pod into variable volume first and second chambers, wherein a total fluid volume of the fluid-balancing chamber pod is a sum of the volumes of the first and second chambers;a first and a second diaphragm pump, an outlet of the first diaphragm pump having a valved connection to the second port of the first fluid-balancing pod and an outlet of the second diaphragm pump having a valved connection to the second port of the second fluid-balancing pod, wherein a full stroke volume of each diaphragm pump matches the total fluid volume of the fluid-balancing pod to which it is connected;a first fluid flowpath connecting a first inlet of the cassette to a first outlet of the cassette, wherein the first fluid flowpath has separate valved connections to the first port of the first fluid-balancing pod and to the first port of the second fluid-balancing pod; anda second fluid flowpath connecting a second inlet of the cassette to a second outlet of the cassette, wherein the second fluid flowpath has separate valved connections to an inlet of ...

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Номер записи: 42
06-02-2020 дата публикации

HIGH QUALITY NON-AEROSOL HAND SANITIZING FOAM

Номер: US20200037826A1
Автор: Ciavarella Nick E.
Принадлежит:

Exemplary embodiments of high non-aerosol foam sanitizers are disclosed herein. An exemplary embodiment of high non-aerosol foam sanitizer includes a liquid mixture that includes an alcohol, water and a surfactant mixed with and entrapping air to form a plurality of foam bubbles. Wherein more than about 50 percent of the foam bubbles have a size of between about 50 m and about 250 μm. 1. A high quality non-aerosol foam sanitizer product comprising:foam bubbles formed from a liquid mixture entrapping air;{'sub': 1', '8, 'wherein the liquid mixture comprises between 40% and 85% by weight of a C-Calcohol, at least one surfactant, and water;'}wherein air is entrapped in the liquid mixture by repeatedly pumping a shot of the liquid mixture through a liquid pumping mechanism into a mixing chamber followed by pumping two or more shots of ambient air through two or more air pumping mechanisms into the mixing chamber to mix with the liquid mixture to form the foam product that is comprised of a plurality of foam bubbleswherein at the time they are dispensed from a dispenser, more than about 50 percent of the foam bubbles have a diameter of between about 50 μm and about 250 μm.2. The high quality non-aerosol foam sanitizer product of wherein the foam bubbles have a density of greater than about 0.10 grams/millimeter.3. The high quality non-aerosol foam sanitizer product of wherein the surfactant comprises a compound containing silicone.4. The high quality non-aerosol foam sanitizer product of wherein the surfactant comprises silane.5. The high quality non-aerosol foam sanitizer product of wherein the surfactant comprises dimethicone.6. The high quality non-aerosol foam sanitizer product of wherein the alcohol by volume greater than about 60%.7. A high quality non-aerosol foam sanitizer product comprising:a plurality of foam bubbles;{'sub': 1', '8, 'wherein the plurality of foam bubbles are formed by a mixture of at least about 40% of a C-Calcohol, water, a surfactant and ...

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Номер записи: 43
03-03-2022 дата публикации

FLUID DELIVERY SYSTEM

Номер: US20220062535A1
Автор: Bolognia David Frank, Harrington J Brian, Venkatadri Vikram
Принадлежит:

A flow control system is disclosed. The flow control system can include a flow meter positioned at a first location of a flow path of a fluid substance, and a valve positioned at a second location of the flow path of the fluid substance. The flow meter can include a molded non-conductive housing, a heating element that is at least partially embedded in the housing, and a sensing element that is at least partially embedded in the housing. The valve can open the flow path to allow the fluid substance to flow in the flow path. The valve can include an actuator that includes deformable chamber and a gate in the flow path of the fluid substance.

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Номер записи: 44
14-02-2019 дата публикации

MACHINE FOR DISPENSING BEVERAGES FROM A POD, COMPRISING A DEVICE FOR THE SYNCHRONIZED INJECTION OF TWO VOLUMES OF AIR

Номер: US20190045967A1
Автор: BRIERE Matthieu, DOS SANTOS Quentin, RIVA Arnaud
Принадлежит:

A machine for dispensing beverages includes a pod including at least two cavities each cavity containing a volume of ingredients forming part of a composition of the beverage, the machine further including an air injection device configured to supply at least two volumes of air in a synchronized manner, the at least two volumes of air being adapted respectively to the volumes of ingredients in the at least two cavities, the injection device including an air pump including two chambers and two pistons slidably mounted respectively in the two chambers, and an actuator configured to actuate the two pistons in a synchronized manner. 1. A machine for dispensing beverages from a pod comprising at least two cavities each cavity containing a volume of ingredients forming part of a composition of the beverage , wherein said machine comprises an air injection device configured to supply at least two volumes of air in a synchronized manner , said at least two volumes of air being adapted respectively to the volumes of ingredients in the at least two cavities , the injection device comprising an air pump comprising two chambers and two pistons slidably mounted respectively in the two chambers , and an actuator configured to actuate the two pistons in a synchronized manner.2. The machine according to claim 1 , wherein the actuator comprises at least one motor and at least one transmission element configured to maneuver the two pistons concomitantly.3. The machine according to claim 2 , wherein the actuator comprises a single motor and a single transmission element configured to maneuver the two pistons concomitantly.4. The machine according to claim 1 , wherein the two chambers and the two pistons are all coaxial.5. The machine according to claim 4 , wherein the actuator comprises a single motor and a single transmission element configured to maneuver the two pistons concomitantly and wherein the motor claim 4 , the transmission element claim 4 , the two chambers and the two ...

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Номер записи: 45
26-02-2015 дата публикации

Hydrostatic Power Unit

Номер: US20150052889A1
Автор: Krittian Lukas, Langen Alfred, Lassaar Rolf, Loeffler Thomas
Принадлежит:

A hydrostatic power unit () comprises a variable displacement machine with a continuously variable displacement volume and is operated as a pump and motor and is in a drive connection with an internal combustion engine (). When operated as a pump, the power unit sucks hydraulic fluid out of a tank () and delivers into a delivery side (P), and, when operated as a motor, functions as a hydraulic starter to start the internal combustion engine (). When operated as a motor, the power unit is supplied with hydraulic fluid from a hydraulic accumulator (). The displacement volume of the power unit () is set by a displacement volume control device () actuated by a positioning piston device () supplied with hydraulic fluid from a charging pressure circuit (). The power unit () includes a supplemental positioning piston device () in an operative connection with the displacement volume control device () and which is actuated directly by the pressure present in the hydraulic accumulator (). By means of a connection of the supplemental positioning piston device () with the hydraulic accumulator, the power unit () can be adjusted to increase the displacement volume to start the internal combustion engine (). 1. A hydrostatic power unit , comprising:a variable displacement machine with a continuously variable displacement volume and operable as a pump and motor;an internal combustion engine connected to the variable displacement machine, wherein when operated as a pump, a suction side of the power unit sucks hydraulic fluid out of the tank and delivers into a delivery side, wherein when operated as a motor, the power unit is a hydraulic starter to start the internal combustion engine, and wherein the power unit operated as a motor is supplied with hydraulic fluid from a hydraulic accumulator;a displacement volume control device to set a displacement volume of the power unit;a positioning piston device supplied with hydraulic fluid from a charging pressure circuit; anda ...

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Номер записи: 46
01-03-2018 дата публикации

METHOD OF PRIMING A MEDICAL PUMP

Номер: US20180055994A1
Автор: Nessel Christian, Richter Rene, Witt Robert
Принадлежит:

A method of priming a medical pump is disclosed. The method includes providing a medical pump comprising a chamber, a first plunger element and, a second plunger element. The method further comprises determining a minimum distance (MD) between the first and the second plunger element and determining the location of an opening of the chamber. 1. A method of priming a medical pump , comprising the steps of:providing a medical pump comprising a chamber, a first plunger element and a second plunger element, the first and second plunger elements being movable relative to each other and relative to the chamber,determining a minimum distance between the first plunger element and the second plunger element, a) introducing a fluid into a chamber space defined by the first and the second plunger elements,', 'b) ejecting the fluid over the opening until the first and second plunger elements are arranged at the minimum distance relative to each other, and', 'c) determining the location of the opening based on the position of at least one of the first and second plunger elements when the first and second plunger elements are arranged at the minimum distance after step b)., 'determining the location of an opening of the chamber, wherein the following steps are carried out to determine the location of the opening2. The method according to claim 1 , wherein moving the fluid to a position axially spaced from a detection position of the opening by a tolerance distance, and', '1) if, under compression of the fluid, the distance between the first and the second plunger element equals the minimum distance, recording the axial position of a borderline between the first and the second plunger elements as the location of the at least one boundary of the opening, and', '2) if, under compression of the fluid, the distance between the first and the second plunger elements does not equal the minimum distance, moving the fluid to a position being arranged closer to the detection position, by a ...

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Номер записи: 47
21-02-2019 дата публикации

PUMP HAVING AN AUTOMATED GAS REMOVAL AND FLUID RECOVERY SYSTEM AND METHOD USING A GAS REMOVAL RESERVOIR HAVING AN INTERNAL PARTITION

Номер: US20190054398A1
Автор: Laessle John, Vines John C.
Принадлежит:

A precision pump system having a motor driver for accurately and repeatedly delivering process fluid, (e.g., photo chemicals) using a pumping fluid with minimal process fluid loss to a fabrication process and whereby the motor driver can be easily and quickly replaced without interrupting the fluid flow path. This is accomplished with the use of a gas removal reservoir having at least one vertical partition therein and at least one free end near a top side of the gas removal reservoir where both the input and output to the gas removal reservoir are located on a bottom surface and a pumping fluid reservoir that are associated with the pump, either integrated with the pump or closely adjacent. In addition, this precision pump system can be remotely monitored, viewed and controlled over the Internet. In addition, trapped process fluid within a downstream filtering block can be recirculated to the gas removal reservoir when trapped gas in the filter is removed. Furthermore, a nitrogen gas source is connected to the gas removal reservoir via a valve in case a need to insert a gas is required. Alternative system embodiments are shown for recirculating process fluid back to the gas removal reservoir and/or the source line. Another alternative system has the pumping chamber coupled to the gas removal reservoir input. 1. A method for automatically evacuating gas from a process fluid to be dispensed as part of a recirculation process , said method comprising:(a) providing a gas removal reservoir having a first inlet coupled to a remote process fluid source, an outlet and at least one vent coupled to a drain;(b) indirectly coupling a piston and cylinder arrangement to said outlet for driving the process fluid into and out of said gas removal reservoir, said step of indirectly coupling a piston and cylinder arrangement further comprising providing a pumping chamber that dispenses a process fluid and wherein said pumping chamber comprises a diaphragm that separates said pumping ...

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Номер записи: 48
05-03-2015 дата публикации

PISTON PUMP

Номер: US20150064036A1
Автор: EBERHARD Dietmar
Принадлежит:

A piston pump is described for pumping a fluid. The pump includes at least one cylinder having a piston movable inside the cylinder along the longitudinal axis of the cylinder by a drive, each cylinder having at an end face a mounting flange having at least one cylinder opening, and a chamber having a volume that changes when the associated piston is moved in the cylinder. The piston pump has an inlet port for supplying and an outlet port for draining the fluid. A rotatable valve plate is arranged on the other side of the mounting flange. The mounting flange has at least one passage in the region of the inlet port and the outlet port, respectively, through which the fluid can flow between the inlet port and/or the outlet port and the other side of the mounting flange. The valve plate has fluid-transporting means by which, upon rotation of the valve plate at least one cylinder opening can be connected to a passage of the inlet and/or the outlet port. 115-. (canceled)16. Piston pump for pumping a fluid , comprising:at least one cylinder, each cylinder having a piston movable inside the cylinder along the longitudinal axis of the cylinder by a drive, wherein each cylinder has an end face;at least one mounting flange having at least one cylinder opening extending between a cylinder-side and a plate-side, the at least one mounting flange defining at least one chamber having a volume that changes when the piston of a respective cylinder is moved in the respective cylinder;an inlet port for supplying and an outlet port for draining the fluid attached to the at least one mounting flange; anda rotatable valve plate arranged on the plate-side of the at least one mounting flange,wherein the at least one mounting flange has at least one passage in the region of the inlet port and the outlet port through which passage the fluid can flow between the inlet and outlet ports and the plate-side of the at least one mounting flange;wherein the valve plate has on at least one surface at ...

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Номер записи: 49
20-02-2020 дата публикации

LIQUID FEEDING PUMP OPERATION MONITOR

Номер: US20200056606A1
Автор: YOKOI Yusuke
Принадлежит:

A liquid feeding pump operation monitor includes: a liquid gauge that measures a remaining amount of a liquid to be fed by a liquid feeding pump; and an operation detector configured to detect a reduction of the remaining amount, which is measured by the liquid gauge, of the liquid to be fed, and to detect an operation of the liquid feeding pump based on the detection of the reduction. 16-. (canceled)7. An analysis system comprising:an analysis device including a liquid feeding pump;a liquid gauge that measures a remaining amount of a liquid to be fed by the liquid feeding pump; andan operation detector configured to detect a reduction of the remaining amount, which is measured by the liquid gauge, of the liquid to be fed, and to detect an operation of the liquid feeding pump based on the detection of the reduction.8. The analysis system according to claim 7 , further comprising an operating time calculator configured to calculate an operating time of the liquid feeding pump by adding up a time during which the operation of the liquid feeding pump is detected by the operation detector.9. The analysis system according to claim 8 , further comprising:a power-on time calculator configured to add up a time during which the liquid feeding pump is on; andan operating rate calculator configured to calculate an operating rate of the liquid feeding pump based on the operating time calculated by the operating time calculator and the power-on time calculated by the power-on time calculator.10. The analysis system according to claim 7 , wherein the operation detector is configured to calculate a changing rate of the remaining amount claim 7 , which is measured by the liquid gauge claim 7 , of the liquid to be fed claim 7 , and to detect that the liquid feeding pump is in operation when the changing rate is equal to or less than a predetermined value.11. The analysis system according to claim 10 , wherein the operation detector is configured to perform a noise removal processing ...

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Номер записи: 50
04-03-2021 дата публикации

LOCKOUT SYSTEM FOR METERING PUMP

Номер: US20210064735A1
Автор: Gledhill, III Robert E., Nguyen John T.
Принадлежит:

A lockout system for a metering pump is provided. The lockout system can include a user interface that is used to switch the pump between a locked configuration and an unlocked configuration. In the locked configuration, the operation of the pump cannot be adjusted through the user interface. In the unlocked configuration, the operation of the pump can be adjusted through the user interface. The lockout system can include a passkey notice that provides information regarding how to use the user interface to switch the pump between the locked and unlocked configurations. 1. A metering pump comprising:a pump motor;a user interface comprising at least one user input station; anda control unit configured to receive an input signal from the at least one user input station, the control unit further configured to adjust an operational speed of the pump motor based on the input signal, wherein the control unit has a locked configuration and an unlocked configuration, wherein in the locked configuration the control unit maintains the operational speed of the pump motor in response to receiving the input signal, wherein in the unlocked configuration, the control unit adjusts the operational speed of the pump motor in response to receiving the input signal, wherein the control unit switches between the locked and unlocked configuration based on a lockout signal received from the user interface.2. The metering pump of further comprising a passkey notice that provides an instruction on how to generate the lockout signal with the user interface.3. The metering pump of claim 2 , wherein the passkey notice is displayed on the metering pump.4. The metering pump of claim 2 , wherein the passkey notice includes a warning against adjusting an operational parameter of the metering pump.5. The metering pump of claim 2 , wherein the passkey notice is displayed within an operational manual of the metering pump.6. A method of restricting access to a control panel of a metering pump claim 2 , ...

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Номер записи: 51
28-02-2019 дата публикации

PUMP SYSTEMS, PUMP ENGINES AND METHODS OF MAKING THE SAME

Номер: US20190060930A1
Автор: ESPINOZA Alejandro
Принадлежит: Silgan Dispensing Systems Corporation

A pump engine assembly includes an output cylinder that may be customized to include a stop portion limiting the stroke of a piston to produce a particular output such that customized pump systems may be produced from similar parts with the exchange of only a single part—the output cylinder, and wherein movement of a fluid lock in a product chamber creates a suck-back feature capable of pulling product away from a dispensing head opening. 1. A method of assembling a pump system , comprising: an accumulator cup having a product chamber;', 'a valve ball;', 'an output cylinder defining a cavity therein;', 'a spring;', 'a piston seal; and', 'a piston stem having a fluid lock at one end and a piston stem flange at an opposing end,, 'assembling a pump engine at a first location wherein the pump engine comprises inserting the spring into the output cylinder;', 'inserting the piston stem through the output cylinder such that the fluid lock extends through an opening in the bottom of the output cylinder and the spring is captured between the output cylinder and the piston stem flange;', 'press fitting the piston seal over the fluid lock of the piston stem to secure the piston seal to the piston stem;', 'inserting said valve ball into a valve seat in a bottom wall of the accumulator cup;', 'removably attaching the output cylinder to the accumulator cup by interfitting snap-fit latch structures to form said pump engine;, 'said step of assembling said pump engine comprising the steps ofassembling said pump engine with a container at a second location comprising the steps of:snap fitting the pump engine with a closure;snap fitting a pump head with the upper end of the piston stem whereby the pump head is in fluid communication with the piston stem and is movable relative to the closure;placing a gasket around the outside accumulator cup and within the closure;inserting a dip tube into a clip tube receptacle on a bottom wall of the accumulator cup; andassembling the closure with ...

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Номер записи: 52
28-02-2019 дата публикации

MICRO-FLUID PUMP

Номер: US20190063416A1
Автор: YAN Hong
Принадлежит: XIAMEN CONJOIN ELECTRONICS TECHNOLOGY CO., LTD.

Embodiments of the disclosure provide a micro-fluid pump having a pump cover with a distribution wall, a one-way valve having a spark surface, and a micro-fluid pump including such a one-way valve as well as a micro fluid pump including a diaphragm deformation control structure. The pump having the pump cover with the distribution wall includes a pump body. The pump cover overlies the pump body to form at least a portion of the inlet passage and at least a portion of the discharge passage, and includes an inlet cavity for containing fluid entering the micro-fluid pump from the outside and a discharge cavity for containing fluid to be discharged from the micro-fluid pump, which cavities are separated by an isolation portion. The pump cover has on its bottom surface a distribution wall which is disposed in the inlet cavity and extends at least partially toward the partition portion. 1. A micro-fluid pump capable of controlling flow precisely , wherein said micro-fluid pump comprises:a pump body, anda pump cover covering the pump body to form at least a portion of an inlet passage and at least a portion of an discharge passage, said pump cover comprising an inlet cavity for containing fluid entering the micro-fluid pump from outside and a discharge cavity for containing fluid to be discharged from the micro-fluid pump, separated by a partition portion;wherein said pump cover has on its bottom face a distribution wall which is disposed in said inlet cavity and extends at least partially toward said partition portion.2. The micro-fluid pump of capable of controlling flow precisely claim 1 , wherein said inlet cavity is disposed around said discharge cavity and has an inlet cavity outer wall from which said distribution wall extend partially toward said partition portion or to said partition portion.3. The micro-fluid pump of capable of controlling flow precisely claim 1 , wherein said distribution wall extends radially.4. The micro-fluid pump of capable of controlling ...

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Номер записи: 53
08-03-2018 дата публикации

METERING FOR FLUID MOTOR AND PUMP COMBINATION

Номер: US20180066646A1
Автор: Himmelmann Richard A.
Принадлежит:

A system has a fluid motor for receiving a pressurized fluid motor causing actuation of the fluid motor, with the fluid motor having a motor inlet and a motor outlet. The motor fluid is delivered from the motor outlet into a container. The motor rotor drives a pump rotor. The pump rotor drives a fluid from a pump inlet to a pump outlet, with the pump outlet being connected into the container. A metering system allows a precise amount of rotation of the motor rotor and the pump rotor to meter the motor fluid and the pump fluid into the container. 1. A system comprising:a fluid motor for receiving a pressurized fluid motor causing actuation of said fluid motor, with said fluid motor having a motor inlet and a motor outlet, and said motor fluid being delivered from said motor outlet into a container, and said motor rotor driving a pump rotor, said pump rotor driving a fluid from a pump inlet to a pump outlet, with said pump outlet being connected into said container; anda metering system for allowing a precise amount of rotation of said motor rotor and said pump rotor to meter said motor fluid and said pump fluid into said container.2. The system as set forth in claim 1 , wherein said fluid motor comprises a motor tube and a motor rotor to be driven by said pressurized fluid moving through said motor tube from said motor inlet to said motor outlet claim 1 , and said pump including a pump tube and a pump rotor engaging said pump tube claim 1 , with said pump rotor being driven to move a pump fluid through said pump tube as said motor rotor rotates.3. The system as set forth in claim 1 , wherein said metering system allowing a particular amount of rotation of said motor rotor and said pump rotor.4. The system as set forth in claim 1 , wherein said pump fluid is an acid and said motor fluid is water claim 1 , and said container receives urine to be treated.5. The system as set forth in claim 4 , wherein said system is mounted on a spacecraft.6. The system as set forth in ...

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Номер записи: 54
27-02-2020 дата публикации

PUMPING SYSTEM

Номер: US20200063725A1
Автор: Al-Dhafiri Amer A.
Принадлежит:

An example pumping system includes a head having an opening and an injection port. The head is for holding content to be forced through the injection port. A bladder is within the head. The bladder is between the content and the opening. A plunger is configured to move through the opening of the head and to apply force within the bladder. The plunger may be movable in a discharge stroke to force the bladder against the content and thereby force the content through the injection port. 1. A pumping system comprising:a head comprising an opening and an injection port, the head being configured to for holding content to be forced through the injection port;a bladder within the head, the bladder between the content and the opening; anda plunger configured to move through the opening of the head and to apply force within the bladder, the plunger being movable in a discharge stroke to force the bladder against the content and thereby force the content through the injection port.2. The pumping system of claim 1 , further comprising:hydraulic oil between the bladder and the plunger, the plunger being configured to apply force to the hydraulic oil during the discharge stroke, the hydraulic oil transferring the force from the plunger to the bladder to force the content through the injection port.3. The pumping system of claim 1 , further comprising:a driver to control the movement of the plunger, the driver for controlling the movement of the plunger so that the discharge stroke of the plunger proceeds for a first duration, a suction stroke of the plunger proceeds for a second duration, and the first duration exceeds the second duration.4. The pumping system of claim 3 , where the first duration is twenty or more minutes and the second duration is one or more seconds.5. The pumping system of claim 1 , further comprising:a driver to control the movement of the plunger, the driver comprising a mechanism that is configured to operate over a range of speeds to control a duration ...

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Номер записи: 55
27-02-2020 дата публикации

DEVICE FOR PUMPING VISCOUS MATERIAL

Номер: US20200063726A1
Автор: ENDERLE Gerrit, Hausner Thomas
Принадлежит: Atlas Copco IAS GmbH

An apparatus for the conveying of viscous material from a container has a conveyor pump, which has a conveyor cylinder and a conveyor piston that can be moved forward and back in the conveyor cylinder, and has a measuring device for measurement of the speed of the conveyor piston. The measuring device has a control unit for control of the conveying of the viscous material in dependence on the measured speed of the conveyor piston and a waste line is branched off from a conveying line for the viscous material, which is connected to the conveyor pump, and using the control unit the conveying line can be blocked and the waste line can be released. 1162020242432361816321836. An apparatus for the conveying of viscous material from a container , with a conveyor pump () , which has a conveyor cylinder () and a conveyor piston that can be moved forward and back in the conveyor cylinder () , and with a measuring device () for measurement of the speed of the conveyor piston , wherein the measuring device () has a control unit () for control of the conveying of the viscous material in dependence on the measured speed of the conveyor piston and wherein a waste line () is branched off from a conveying line () for the viscous material , which line is connected to the conveyor pump () , and by means of the control unit () the conveying line () can be blocked and the waste line () can be released.22426. The apparatus according to claim 1 , wherein the measuring device () has a distance-measuring unit () for time-independent measurement of the distance traveled by the conveyor piston.326. The apparatus according to claim 2 , wherein the conveyor piston is connected mechanically to the distance-measuring unit ().41628203026. The apparatus according to claim 3 , wherein the conveyor pump () has a piston rod () claim 3 , which projects from the conveyor cylinder () claim 3 , is connected in fixed manner to the conveyor piston and is connected rigidly by way of connecting means () to a ...

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Номер записи: 56
29-05-2014 дата публикации

PISTON PUMP FOR DELIVERING FLUIDS, AND CORRESPONDING ASSEMBLY PROCESS FOR A PISTON PUMP

Номер: US20140147314A1
Автор: Gaertner Oliver
Принадлежит: ROBERT BOSCH GMBH

A piston pump for delivering fluids includes a cylinder, a piston that is movably mounted in the cylinder, and a pressure chamber that is arranged between an inlet valve and an outlet valve and that is closed off by a cover. The piston pump further includes a throttle element that is disposed in the fluid flow downstream of the outlet valve and that is configured to throttle the fluid flow. The throttle element is in the form of a resiliently elastic disk that is inserted into the cover. The cover further includes a mechanism configured to pre-center the throttle element. 1. A piston pump for delivering fluids , comprising:a cylinder;a piston mounted movably in the cylinder;{'b': '5', 'a pressure chamber arranged between an inlet valve and an outlet valve () and is closed by a cover; and'}a throttle element disposed in a fluid flow downstream of the outlet valve, the throttle element being configured to throttle the fluid flow,wherein the throttle element is configured as a resilient disk inserted in the cover, the cover including a centering mechanism configured to pre-center the throttle element.2. The piston pump as claimed in claim 1 , wherein at least two pressing lugs against which the cylinder is pressed together with the cover are formed on the cover claim 1 , and wherein at least one recess is formed between the two pressing lugs claim 1 , the at least one recess acting as a discharge channel for the fluid flow.3. The piston pump as claimed in claim 2 , characterized in that wherein the centering mechanism includes at least one chamfer arranged on the pressing lug rearwardly in the pressing-in direction.4. The piston pump as claimed in claim 3 , wherein the individual chamfers are each at an acute angle.5. The piston pump as claimed in claim 1 , wherein an annular channel is formed in the cover claim 1 , the annular channel being covered by the throttle element and filled with fluid when the outlet valve is open claim 1 , the fluid being configured to flow ...

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Номер записи: 57
11-03-2021 дата публикации

METHOD OF CALIBRATING A PUMP OUTPUT

Номер: US20210071651A1
Автор: "ORourke Brendan", McMenamy Justin, Schlipf Ben, Vaccari Adam
Принадлежит:

Embodiments of the present disclosure includes a method of calibrating a pump in a system to determine a minimum pump duty cycle needed. The system comprises a pump, a plurality of application lines downstream of the pump, and a flow control device in each application line. The method determines the minimum pump duty cycle to achieve total flow in the system, achieves a minimum pressure in the system, and ensures that the flow control device is not at or beyond a maximum open position. 1. A method of calibrating a pump comprising:adjusting pump duty cycle until a target total flow rate in a system is achieved;determining pressure at each flow control device of the system;determining a minimum pressure for each flow control device; andadjusting pump duty cycle until the minimum pressure is achieved for each flow control device when pressure is below a minimum pressure for any flow control device.2. The method of claim 1 , wherein the method determines a duty cycle for the target total flow rate that is a maximum flow rate.3. A pump system claim 1 , comprising:at least one fluid storage for storing a liquid to be applied to a field;a plurality of application lines each having a flow control device;a pump to control a flow of the liquid to the flow control devices; anda controller to control the pump, the controller to adjust pump duty cycle until a target total flow rate in the pump system is achieved and to adjust pump duty cycle until a minimum pressure is achieved for each flow control device when pressure is below a minimum pressure for any flow control device. This application is a continuation of U.S. application Ser. No. 16/485,001, filed 9 Aug. 2019, which is a national stage entry of PCT Application No. PCT/US2018/017270, filed 7 Feb. 2018, which claims the benefit of U.S. Provisional Application No. 62/460,020 filed on Feb. 16, 2017 entitled: METHOD OF CALIBRATING A PUMP OUTPUT, all of which are incorporated by reference herein.Embodiments of the present ...

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Номер записи: 58
05-03-2020 дата публикации

METHODS OF OPERATING A PUMP TO REDUCE OR ELIMINATE PUMP BACKLASH ERRORS

Номер: US20200072213A1
Автор: MIERS David, Mishra Ajit
Принадлежит: Accriva Diagnostics, Inc.

A method of operating a pump can include advancing a stepper motor one or more additional steps in a first direction after detecting a first change in a limit sensor state corresponding to a piston reaching an end of its travel in a first direction. After advancing the stepper motor the additional step or steps in the first direction, the stepper motor can be reversed and advanced in a second direction until a second change in the limit sensor state is detected. The stepper motor can then be advanced in the second direction a predetermined number of steps associated with a full travel of the piston. 120.-. (canceled)21. A pump apparatus , comprising:a piston configured for displacing a volume of fluid within the pump apparatus;a stepper motor coupled to the piston and configured to move the piston in a first direction along a path within the pump and a second direction opposite the first direction along the path within the pump;a first limit sensor configured in the pump to detect proximity of the piston to a first location on the path;a second limit sensor configured in the pump to detect proximity of the piston to a second location on the path;a processor in communication with the stepper motor, the first limit sensor and the second limit sensor, the processor configured for causing the stepper motor to move the piston in response to signals from the first limit sensor and the second limit sensor; detecting a change in the first limit sensor state;', 'advancing the stepper motor coupled in a first direction after detecting the change in the first limit sensor state;', 'counting a number of steps while advancing the stepper motor in the first direction until a first change in the second limit sensor state is detected;', 'advancing the stepper motor an additional step in the first direction after the first change in the second limit sensor state is detected;', 'advancing the stepper motor in a second direction opposite the first direction after the additional step ...

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Номер записи: 59
24-03-2022 дата публикации

STOMACH SIMULATING DEVICE

Номер: US20220093006A1
Автор: DUFOUR David C., Freake Jacob, Grant Tyler, HEALY John James, HERRMANN Nathan Andrew, KANASTY Rosemary, KURTIN Kristofer, MANDELKERN Carmi, PETERSON Benjamin August Rothenberg, Roberts Todd William, RYDE Erik Robert Waldemar, Sabin Doug
Принадлежит:

Provided are stomach simulating devices and methods for simulating a stomach. Stomach simulating devices can comprise a bag-shaped conduit, a mechanical constrictor, and a valve. The conduit can have a body portion, a first diameter at an inlet portion, and a second diameter at an outlet portion, wherein the first diameter at the inlet portion is greater than the second diameter at the outlet portion, the body portion is located between the inlet portion and the outlet portion, and at least a portion of the conduit is curved in a direction from the inlet portion the outlet portion. The mechanical constrictor can he configured to constrict at least a portion of the body portion of the conduit. The valve can be configured to at least partially close a portion of the conduit closer to the outlet portion than the inlet portion of the conduit. 1. A stomach simulating device comprising:a conduit having a body portion, a first diameter at an inlet portion, and a second diameter at an outlet portion, wherein the first diameter at the inlet portion is greater than the second diameter at the outlet portion, the body portion is located between the inlet portion and the outlet portion, and at least a portion of the conduit is curved in a direction from the inlet portion the outlet portion;a mechanical constrictor configured to constrict at least a portion of the body portion of the conduit; anda valve configured to at least partially close a portion of the conduit closer to the outlet portion than the inlet portion of the conduit.2. The stomach simulating device of claim 1 , wherein the conduit comprises a J-shape.3. The stomach simulating device of or claim 1 , wherein the conduit comprises silicone.4. The stomach simulating device of any of - claim 1 , wherein a top opening of the conduit comprises a diameter of 3.0-8.0 inches.5. The stomach simulating device of any of - claim 1 , wherein the conduit comprises a minimum diameter in an unconstricted conduit of 0.25-2.0 inches. ...

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Номер записи: 60
14-03-2019 дата публикации

Integrated apparatus for precisely and synchronously controlling amounts of discharged hydraulic oil and fluid using motor

Номер: US20190078437A1
Автор: SHAOBIN WANG, Yongqin WANG
Принадлежит: Individual

An integrated apparatus for precisely and synchronously controlling amounts of discharged hydraulic oil and fluid using a motor, includes a housing. A movable dual-piston extractor, a motor and a plunger pump are configured in the housing and sequentially connected. A hydraulic pipeline and a fluid pipeline are connected with the housing to control flows of hydraulic oil and a fluid. A specified amount of fluid sample can be precisely extracted by precisely controlling, according to a control circuit, the number of rotations of the motor, which is indirectly reflected to a travel distance of the lead screw. A motor indirectly drives a lead screw, a nut and a piston to move linearly along a hydraulic chamber through mechanisms including a transmission shaft, and according to a position where the transmission shaft of the motor rotates, the displacement distance of the piston can be measured precisely.

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Номер записи: 61
26-03-2015 дата публикации

Multi-chamber pump apparatus, systems, and methods

Номер: US20150086386A1
Автор: Robert Autrey, Tomasz Moskal
Принадлежит: Siemens Healthcare Diagnostics Inc

Disclosed are apparatus adapted to dispense and/or aspirate liquids, such as in a clinical analyzer. In one aspect, a multi-chamber pump apparatus is disclosed that has a pump body containing first and second chambers, a piston having a first piston portion of a first pump area A1 received in the first chamber, and a second piston portion of a second pumping area A2 received in the second chamber, and an actuator coupled to the piston. The first and second chambers can be selectively accessed to improve metering accuracy at dissimilar flow volumes from the chambers. Methods and systems including the multi-chamber pump apparatus are provided, as are other aspects.

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Номер записи: 62
14-03-2019 дата публикации

Solenoid Current Monitoring Method for Leak Detection and Vapor Lock

Номер: US20190078959A1
Автор: Jason Carman, Nile Fairfield
Принадлежит: Milton Roy LLC

A metering pump is typically used to move a specified volume of liquid in a specified amount of time. Because it may be desirable to maintain fluid in the pumping system such that the metering pump is maintained in a primed condition, an automatic prime detection function is provided by monitoring the current to a solenoid assembly of the pump. A loss of prime condition can then be detected by comparing the measured current to a characterized selected current value such that operation of the metering pump can be changed based on load.

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Номер записи: 63
24-03-2016 дата публикации

DOSING PUMP SYSTEM

Номер: US20160084245A1
Автор: Ubidia Fernando A.
Принадлежит:

A compact, modular dosing pump system that is capable of microdose and macrodose volume flow rates, reduces or eliminates the need for additional flow control components such as temperature and pressure sensors, and utilizes a wider operational flow range than existing systems while maintaining the level of accuracy and precision exhibited by conventional dosing pump systems is provided. The dosing pump utilizes a control system to deliver a range of fluid volumes. The control system monitors the motor emf voltage, calculates the flow rate, and makes adjustments to the pump motor voltage to precisely maintain the desired flowrate. 1. A pump system comprising:A controller and a fluid pump including a motor, said controller being operably connected to said fluid pump;wherein the controller monitors a motor electromotive force and controls the operation of said motor by utilizing information pertaining to the motor electromotive force to adjust the pulse width of a voltage applied to the motor.2. The pump system of wherein said fluid pump further comprises one or more valves and wherein the valves are only opened upon an application of sufficient pressure by fluid to the valves and only closed when there is an application of insufficient pressure by fluid to force fluid through the valves.3. The pump system of wherein the controller generates a signal based on the motor electromotive force indicating that a fluid supply for the pump is depleted.4. The pump system of wherein the controller includes a predefined set of flow rate values such that at least one of said predefined flow rate values corresponds to a fluid to be pumped; and wherein the controller claim 1 , in response to an input provided to the controller corresponding to a fluid to be pumped claim 1 , utilizes at least one of said flow rate values to control a flow rate of fluid flowing out of the fluid pump by controlling the operation of the motor.5. The pump system of wherein the controller includes one or ...

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Номер записи: 64
21-03-2019 дата публикации

Precision Fluid Dispensing Device

Номер: US20190084753A1
Автор: Michael Alan Hartmann
Принадлежит: Hartmann's Inc

The present disclosure provides generally for a fluid-dispensing device. More specifically, the present disclosure provides for a precision fluid-dispensing device that may deliver a predefined volume of fluid quickly and reliably. In some aspects, the precision fluid-dispensing device may be used to deliver a fluid to a receiving container, such as in a manufacturing line, as a non-limiting example. In some embodiments, the precision fluid-dispensing device may dispense very accurate volumes of fluid using the head pressure of the fluid from an elevated reservoir or pressurized fluid supply. In some implementations, the precision fluid-dispensing device may dispense fluid gently and quickly, which may allow for handling of fluids that may be sensitive to agitation or mixing.

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Номер записи: 65
30-03-2017 дата публикации

Device For Sealing And Inflating Inflatable Objects

Номер: US20170087783A1
Автор: Detering Rainer, Zaum Christopher
Принадлежит: CONTINENTAL REIFEN DEUTSCHLAND GMBH

Devices for sealing and inflating inflatable objects, in particular for sealing and inflating motor vehicle tires, wherein the devices have as a source of compressed gas a compressor unit, which is formed as a reciprocating piston compressor driven by a slider crank mechanism and has a piston moved in an oscillating manner in a cylinder, and wherein the piston and the cylinder delimit a compression chamber and the cylinder is closed on the output side by a cylinder head with an outlet valve. 2. The device as claimed in further comprising a pressure gage and a reservoir for an automatic sealant that can be filled into the inflatable object and a valve-and-distributor unit for sealant and compressed gas claim 1 , which connects the reservoir and the compressor unit and has a line that can be connected to the inflatable object.3. The device as claimed in claim 1 , wherein the dead air volume is provided by a pressure chamber which is connected to the compression chamber and the content of which can be varied depending on the temperature of the cylinder head.4. The device as claimed in claim 1 , wherein a further pressure chamber takes the form of a second cylinder arranged in a guided claim 1 , temperature-dependently displaceable piston slide valve.5. The device as claimed in claim 4 , wherein the piston slide valve can be actuated by an actuator of a shape memory alloy.6. The device as claimed in claim 4 , wherein the piston slide valve can be displaced by an actuator that is actuated with the aid of a thermobimetal element.7. The device as claimed in claim 4 , wherein the piston slide valve can be actuated by an electrical or electromechanical actuator claim 4 , which is controlled by a monitoring unit that can be activated by way of temperature sensors.8. The device as claimed in claim 1 , wherein the content of the dead air volume or pressure chamber can be increased to at least 5% of the compression chamber.9. The device as claimed in claim 1 , wherein the ...

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Номер записи: 66
05-05-2022 дата публикации

FOAMING SOAP DISPENSERS

Номер: US20220133095A1
Автор: Chen Hon-Lun, Cohen Guy, Pirshafiey Nasser, Sandor Joseph, Wolbert David, Yang Frank, Yen Kenneth
Принадлежит:

Various dispensing devices, such as foaming soap pumps, are disclosed. The soap pump can include a fluid storage unit and a fluid handling unit. The fluid storage unit can include a reservoir that is configured to hold a quantity of product, such as liquid soap. The fluid handling unit can include a pumping assembly and dispensing assembly. The soap pump can be configured to withdraw liquid soap from the reservoir, convert the liquid soap to foamed soap, and dispense the foamed soap from the discharge assembly.

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Номер записи: 67
19-03-2020 дата публикации

Sterile pump module for an infusion pump

Номер: US20200086041A1
Автор: Jürgen Fuchs, Jürgen Hartung, Jürgen Steger
Принадлежит: B Braun Melsungen AG

A pump module for an infusion pump includes a plunger-cylinder unit that can be coupled to the infusion pump in order to deliver fluid from a fluid feed line into a fluid drain line to a patient. The plunger-cylinder unit has a delivery chamber that is fluidically connected to the fluid feed line and the fluid drain line. The delivery chamber is delimited by the cylinder (14). The plunger can be moved linearly/back and forth in the axial direction. A plunger seal seals the plunger in relation to the cylinder. The section of the wall of the cylinder, over which the plunger seal passes during the back-and-forth motion of the plunger, is sealed in a sterile manner in relation to the surroundings.

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Номер записи: 68
19-03-2020 дата публикации

GAS OPERATED FLUID PUMP WITH INPUT AND OUTPUT GAS VALVES

Номер: US20200088176A1
Автор: Cleland Adam, Cleland James
Принадлежит:

A viscous fluid is dispensed precisely using a fluid pump, control valves configured to control both the air inlet and outlet of the fluid pump, an optional adjustable regulator further controlling the air outlet, and a control circuit that opens and closes the control valves. To further increase the precision, additional control valves can be used to control liquid inlet and outlet of the fluid pump. 1. A system for dispensing a fluid , comprising:a pneumatically operated fluid pump having an air inlet, an air outlet, a fluid inlet, and a fluid outlet;a first control valve configured to control a flow of air to the air inlet;a second control valve configured to control the air outlet; anda control circuit that opens and closes both the first and second control valves.2. The system of claim 1 , further comprising an adjustable regulator fluidly coupled to and positioned downstream of the second control valve.3. The system of claim 2 , wherein the adjustable regulator is a needle valve.4. The system of claim 1 , further comprising a first solenoid that operates the first control valve claim 1 , and a second solenoid that operates the second control valve.5. The system of claim 1 , further comprising a timer that regulates a time delay between opening and closing the first and second control valves by sending electrical signals to the first and second solenoids claim 1 , respectively.6. The system of claim 5 , wherein the time delay is between 0.05 second to 1 second.7. The system of claim 5 , wherein the time delay is between 0.1 second to 0.5 second.8. The system of claim 1 , wherein the fluid has a viscosity of at least 5 claim 1 ,000 cps.9. The system of claim 8 , wherein the first and second control valves cooperate with the pump to repeatedly dispense the fluid with a variance of no more than 0.1 ml.10. The system of claim 1 , wherein the fluid has a viscosity of at least 25 claim 1 ,000 cps.11. The system of claim 10 , wherein the first and second control ...

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Номер записи: 69
19-03-2020 дата публикации

MATERIAL DISPENSING SYSTEM WITH GAS REMOVAL

Номер: US20200088177A1
Автор: Costa Larry J.
Принадлежит:

A material dispensing system can comprise a first and second supply container housing a first and second material, respectively, comprising a first and second fluid, respectively; a first and second metering cylinder fluidly connected to the first and second supply container, respectively, the second metering cylinder configured to move from a first to a second stroke position in unison with the first metering cylinder; a dispensing head configured to receive a first and second liquid of the first and second fluids, respectively; a first recycling valve positioned between the first metering cylinder and the dispensing head; and a second recycling valve positioned between the second metering cylinder and the dispensing head, the first and second recirculating valves configured to draw a portion of the first and second fluids back into the first and second supply containers, respectively, in an open position. 1. A material dispensing system comprising:a first supply container housing a first material, the first material comprising a first fluid;a second supply container housing a second material, the second material comprising a second fluid;a first metering cylinder fluidly connected to the first supply container;a second metering cylinder fluidly connected to the second supply container, the second metering cylinder connected to the first metering cylinder, the second metering cylinder configured to move from a first stroke position to a second stroke position in unison with the first metering cylinder;a dispensing head configured to receive a first liquid of the first fluid and a second liquid of the second fluid;a first recycling valve positioned between the first metering cylinder and the dispensing head, the first recycling valve configured to draw a portion of the first fluid back into the first supply container in an open position of the first recycling valve; anda second recycling valve positioned between the second metering cylinder and the dispensing head, ...

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Номер записи: 70
19-03-2020 дата публикации

System And Method For Providing Stable Fluid Flow

Номер: US20200088623A1
Автор: MALKIN Jason, Ward Michael
Принадлежит:

An embodiment of a system with a minute measure of pulsatility in a flow of a fluid is described that comprises a first pump configured to flow the fluid to a junction at a first flow rate that comprises a measure of pulsatility; and a second pump configured to flow a portion of the fluid from the junction at a second flow rate that is less than the first flow rate to produce a flow of the fluid at a third flow rate from the junction with a minute measure of pulsatility. 1. (canceled)2. A system , comprising:a flow cell,the flow cell being configured to receive a sample fluid from a sample fluid source in fluid communication with the flow cell, and the flow cell being configured to receive a carrier fluid from a carrier fluid source in fluid communication with the flow cell,the carrier fluid having a carrier fluid flowrate,a first output pump,the first output pump being in fluid communication with a first junction, the first junction being in further fluid communication with the flow cell,the first output pump being in fluid communication with a second junction, the second junction being in fluid communication with the first junction,the first output pump being configured to flow a fluid from the first junction to the second junction along a first output pathway,a second output pump being in fluid communication with the first junction and in fluid communication with a second junction such that the first output pump, the first junction, the second output pump, and the second junction define a fluidic circuit,the second output pump being configured to flow fluid between the first junction and the second junction along a second fluid pathway, andthe first output pump and the second output pump being operable so as to effect an output flow of fluid from the second junction having an output flowrate greater than the carrier fluid flowrate,the output flowrate giving rise to a pressure differential that encourages sample fluid from the sample source into the flow cell.3. ...

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Номер записи: 71
26-06-2014 дата публикации

HYDRAULIC SYSTEM FOR CONTROLLING A WORK IMPLEMENT

Номер: US20140174063A1
Автор: Gabibulayev Magomed
Принадлежит: CATERPILLAR INC.

A hydraulic system includes a cylinder assembly with a rod, a pressurized fluid source, a fluid tank, and a control valve. The control valve is fluidly connected to the cylinder assembly. The hydraulic system also includes a line relief, first makeup valve, and second makeup valve fluidly connected to a head end of the cylinder assembly. The second makeup valve is configured to provide fluid flow to the head end of the cylinder assembly when the rod is urged toward an extended position and the control valve is in a neutral position. 1. A hydraulic system , comprising:a hydraulic cylinder assembly including a cylinder, a rod, a head end including a head pressure, and a rod end including a rod pressure;a pressurized fluid source;a fluid tank;a metering control valve including a rod extension position, a rod retraction position, and a neutral position, the control valve being fluidly connected to the head end, the rod end, the fluid source, and the fluid tank, the metering control valve including a valve opening configured to direct fluid from the pressurized fluid source when the metering control valve is in the rod extension position, the valve opening having an opening area less than about 3% of a maximum opening area of the valve opening over about the first 50% of full spool displacement;a line relief and first makeup valve fluidly connected to the head end of the cylinder assembly; anda second makeup valve fluidly connected to the head end of the cylinder assembly, the second makeup valve being configured to provide fluid flow to the head end of the cylinder assembly when the rod is urged toward an extended position at a time when the metering control valve is in the neutral position.2. The hydraulic system of claim 1 , wherein the metering control valve includes a rod extension port selectively fluidly connected to a pilot fluid source claim 1 , and a rod retraction port selectively fluidly connected to the pilot fluid source.3. The hydraulic system of claim 2 , ...

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Номер записи: 72
01-04-2021 дата публикации

HIGH-VISCOSITY FLUID DELIVERY

Номер: US20210094311A1
Автор: Nir Jonathan, Shachak Yossi
Принадлежит: HP INDIGO B.V.

The present disclosure provides a method and system for delivering a high-viscosity fluid . In an example, a reciprocating a piston pumps a high-viscosity fluid through a one-way check valve into a pump chamber . Responsive to receipt of a request for a dose of the high-viscosity fluid , an output valve in the pump chamber is opened, and the piston is reciprocated in order to eject a dose of the high-viscosity fluid from the pump chamber through the output valve 1300. A method of delivering a high-viscosity fluid , the method comprising:reciprocating a piston to pump a high-viscosity fluid through a one-way check valve into a pump chamber;responsive to receiving a request for a dose of the high-viscosity fluid, opening an output valve in the pump chamber and reciprocating the piston to eject a dose of the high-viscosity fluid from the pump chamber through the output valve; andclosing the output valve after ejecting the dose.2. The method according to claim 1 , wherein the piston is reciprocated through a specific measured distance to eject the high-viscosity fluid from the chamber through the output valve.3. The method according to claim 2 , wherein the piston is reciprocated through exactly one stroke to eject the high-viscosity fluid from the chamber through the output valve.4. The method according to wherein the piston completes more strokes whilst the output valve is closed than whilst the output valve is open.5. The method according to claim 4 , wherein the piston is reciprocated through at least two full cycles before the output valve is opened.6. The method according to wherein the printing fluid is maintained under pressure in the pump chamber.7. A controller for a reciprocating pump claim 1 , the controller adapted to:reciprocate a piston to pump a high-viscosity fluid through a one-way check valve into a chamber;in response to receiving a request for the high-viscosity fluid, open an output valve and reciprocate the piston to eject a dose of the high- ...

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Номер записи: 73
14-04-2016 дата публикации

Metering Pump and Metering System

Номер: US20160102658A1
Автор: WICHMANN Wolf-Dieter
Принадлежит:

The invention relates to a metering pump having a hydraulic drive () for supplying a hydraulic fluid under pressure. The metering pump furthermore comprises a housing () and an oscillating piston (), which is accommodated in the housing () in such a way that at least a first and a second hydraulic chamber (--) and a first (-) and a second delivery chamber (-) are formed, wherein the oscillating piston () has at least a first driving surface (-) in the first hydraulic chamber (-) and at least a second driving surface (-) in the second hydraulic chamber (-), and the hydraulic chambers (--) communicate with the hydraulic drive, thus enabling the oscillating piston () to be moved backward and forward between a first and a second position by the hydraulic fluid, wherein, during the movement from the first to the second position, the volume of the first delivery chamber (-) is enlarged and the volume of the second delivery chamber (-) is reduced and, during the movement from the second to the first position, the volume of the second delivery chamber (-) is enlarged and the volume of the first delivery chamber (-) is reduced. The invention furthermore relates to a metering system for mixing two fluids and a metering system for metering at least one fluid. 119-. (canceled)20. A metering pump havinga hydraulic drive for supplying a hydraulic fluid under pressure, a housing,an oscillating piston, which is accommodated in the housing in such a way that at least a first and a second hydraulic chamber and a first and a second delivery chamber are formed, andan adjusting device, which is coupled to the oscillating piston in such a way that the movement of the oscillating piston can be limited in such a way that different minimum and/or maximum volumes can be set for at least one of the delivery chambers,wherein the oscillating piston has at least a first driving surface in the first hydraulic chamber and at least a second driving surface in the second hydraulic chamber, and the ...

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Номер записи: 74
29-04-2021 дата публикации

Peristaltic pumping of fluids and associated methods, systems, and devices

Номер: US20210121874A1
Автор: John H. Leamon, Jonathan C. Schultz, Jonathan M. Rothberg, Todd Roswech, Xiaxiao Ma
Принадлежит: Quantum Si Inc

Embodiments described herein generally relate to apparatuses, cartridges, and pumps for peristaltic pumping of fluids and associated methods, systems, and devices. The pumping of fluids is, in certain cases, an important aspect of a variety of applications, such as bioanalytical applications (e.g., biological sample analysis, sequencing, identification). The inventive features described herein may, in some embodiments, provide an ability to pump fluids in ways that combine certain advantages of robotic fluid handling systems (e.g., automation, programmability, configurability, flexibility) with certain advantages of microfluidics (e.g., small fluid volumes with high fluid resolution, precision, monolithic consumables, limiting of the wetting of components to consumables).

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Номер записи: 75
02-04-2020 дата публикации

Cleaning apparatuses and devices for applying cleaning fluid to substrates

Номер: US20200101499A1
Автор: Mark T. Smith, Nick E. Ciavarella, Stephanie Bock
Принадлежит: Go-Jo Industries Inc

Exemplary embodiments of cleaning buckets are shown and described herein. An exemplary cleaning bucket includes a housing that has a cleaning solution reservoir, a dirty water reservoir and an insert for inserting into the housing. The housing has a first surface. The first surface covers the cleaning solution reservoir. The first surface is configured to allow water to flow into the dirty water reservoir through one or more openings allowing fluid to flow into the dirty water reservoir. The insert further includes a cleaning solution dispensing member located on the first surface, a pump for drawing cleaning solution out of the cleaning solution reservoir; and an activation device for causing the pump to pump fluid from the cleaning solution reservoir to the cleaning solution dispensing member.

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Номер записи: 76
30-04-2015 дата публикации

Volumetric Metering Unit

Номер: US20150114480A1
Автор: HERTEL Stefan
Принадлежит:

Method and device for metering a medium from at least one storage tank by a metering device, which has a piston pump, which defines a working chamber with a cylinder and a piston, wherein in a first method step a determined filling quantity of a medium is conveyed via an inlet valve into the working chamber and the determined filling quantity is greater than the quantity to be metered and, in a second method step, the piston reduces the working chamber in size enough that only the quantity to be metered remains, wherein the excess medium flows out of the working chamber, wherein the excess medium flows via the inlet valve back into a ring line, which is connected in a medium-conducting manner to the storage tank and is arranged outside the working chamber. 1. A method for metering a medium from at least one storage tank by means of a metering device , which has a piston pump , which defines a working chamber with a cylinder and a piston , the method comprising conveying a determined filling quantity of a medium via an inlet valve into the working chamber and the determined filling quantity is greater than the quantity to be metered and , reducing , via the piston , the working chamber in size until only the quantity to be metered remains , wherein the excess medium flows out of the working chamber via the inlet valve back into a ring line , which is connected in a medium conducting manner to the storage tank and is arranged outside the working chamber.2. The method according to claim 1 , wherein the pressure inside the working chamber is measured during all of steps of the method using a pressure sensor.3. A method for metering at least one medium by a metering device claim 1 , which has a piston pump claim 1 , in which a cylinder and a movable piston define a working space claim 1 , the method comprising:opening an inlet valve, wherein the piston is at the height of a cylinder base;filling the working chamber with the medium via the inlet valve using a pump, which ...

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Номер записи: 77
27-04-2017 дата публикации

ANTI-BACKLASH MECHANISM FOR MOTOR-DRIVEN COMPONENTS IN PRECISION SYSTEMS AND APPLICATIONS

Номер: US20170114879A1
Автор: Cedrone James, Gashgaee Iraj, Gonnella George L.
Принадлежит:

Backlash in a precision system such as a pumping system can be reduced or eliminated with an anti-backlash device that has a first nut coupled to and fixed in relation to a piston. The first nut and a second nut may engage with a lead screw of a motor driving the piston. Relative rotation between the first and second nuts are limited or prevented. A biasing member maintains a spaced relationship between the first and second nuts along the lead screw such that the first nut remains in engagement with the lead screw to thereby reduce or eliminate backlash when the lead screw is rotated by the motor. 1. An anti-backlash device , comprising:a first nut having a first engagement feature and a first rotation locking feature, the first engagement feature structured for engagement with a lead screw of a motor, wherein the first nut is coupled to a piston driven by the motor and is fixed in relation to the piston;a second nut having a second engagement feature and a second rotation locking feature, the second engagement feature structured for engagement with the lead screw, the second rotation locking feature structured to complement the first rotation locking feature for limiting or preventing relative rotation between the first nut and the second nut; anda biasing member for maintaining a spaced relationship between the first nut and the second nut along the lead screw such that the first engagement feature of the first nut remains in engagement with the lead screw to thereby reduce or eliminate backlash when the lead screw is rotated by the motor in a first direction.2. The anti-backlash device of claim 1 , wherein the second engagement feature of the second nut remains in engagement with the lead screw to thereby reduce or eliminate backlash when the lead screw is rotated by the motor in a second direction.3. The anti-backlash device of claim 1 , wherein the first engagement feature of the first nut or the second engagement feature of the second nut comprises inner ...

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Номер записи: 78
09-04-2020 дата публикации

FOOD INGREDIENT TRANSFER DEVICE

Номер: US20200108161A1
Автор: MATKOVIC Marko
Принадлежит:

A food ingredient transfer device is provided. The food ingredient transfer device includes a dosing device configured to receive a food ingredient, and a first chamber that is provided with an inlet and an outlet for allowing the dosing device to pass through the first chamber. The food ingredient transfer device further includes a second chamber arranged adjacent to the first chamber for receiving the dosing device when it has passed through the first chamber, the second chamber being provided with an outlet for allowing the dosing device to pass through the second chamber and into an enclosure that contains a food product to which the food ingredient shall be transferred. 1. A food ingredient transfer device , comprising:a dosing device configured to receive a food ingredient, anda first chamber that is provided with an inlet and an outlet for allowing the dosing device to pass through the first chamber, whereina second chamber is arranged adjacent to the first chamber for receiving the dosing device when it has passed through the first chamber, the second chamber being provided with an outlet for allowing the dosing device to pass through the second chamber and into an enclosure that contains a food product to which the food ingredient shall be transferred.2. The food ingredient transfer device according to claim 1 , comprising a first penetrable membrane that is arranged to seal the inlet of the first chamber.3. The food ingredient transfer device according to claim 1 , comprising a second penetrable membrane that is arranged to seal the outlet of the first chamber.4. The food ingredient transfer device according to claim 1 , comprising a third penetrable membrane that is arranged to seal the outlet of the second chamber.5. The food ingredient transfer device according to claim 2 , wherein the first penetrable membrane claim 2 , the second penetrable membrane and the third penetrable membrane are aligned in a linear direction that extends from the first ...

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Номер записи: 79
25-04-2019 дата публикации

PUMP CHANGEOVER ALGORITHM FOR SPRAY SYSTEM

Номер: US20190118201A1
Автор: Fehr David L., Ingebrand John R., Shaffer Jeffrey U.
Принадлежит:

A method of actuating a double-action pump assembly with a reciprocating plunger includes signaling the reciprocating plunger to stop for a changeover period; while the pump is stopping, signaling the first inlet and outlet valves to close; while the first inlet and outlet valves are closing, signaling the second inlet and outlet valves to open, such that the second inlet and outlet valves begin to mechanically open at least a dwell period after the first inlet and outlet valves have entirely closed; and signaling the reciprocating plunger to begin moving while the second inlet and outlet valves are closing. 1. A method of actuating a double-action pump assembly with a reciprocating plunger , the method comprising:signaling the reciprocating plunger to stop for a changeover period;signaling the first inlet and outlet valves to close while the pump is stopping;signaling the second inlet and outlet valves to open while the first inlet and outlet valves are closing, such that the second inlet and outlet valves begin to mechanically open at least a dwell period after the first inlet and outlet valves have entirely closed; andsignaling the reciprocating plunger to begin moving while the second inlet and outlet valves are closing.2. The method of claim 1 , wherein the pump stops completely claim 1 , substantially as the first inlet and outlet valves begin to mechanically close.3. The method of claim 1 , wherein the dwell period is a minimum time period required by operational tolerances to ensure that the first inlet and outlet valves are fully closed before the second inlet and outlet valves begin to open.4. The method of claim 3 , wherein the dwell period is less than 10 milliseconds.5. The method of claim 1 , wherein the mechanical closure of the first inlet and outlet valves substantially corresponds with complete halting of the pump.6. The method of claim 1 , wherein less than 60 milliseconds elapse between signaling the reciprocating plunger to stop for a changeover ...

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Номер записи: 80
27-05-2021 дата публикации

LIQUID FEEDING DEVICE

Номер: US20210156376A1
Автор: Imamura Shinya, OGAWA Keisuke
Принадлежит:

A liquid feeding device includes a primary plunger pump; a secondary plunger pump connected downstream; a check valve provided between the primary plunger pump and the secondary plunger pump; a primary pressure sensor that detects a pressure in the pump chamber of the primary plunger pump; a liquid feeding control part configured to control operations of the primary plunger pump and the secondary plunger pump; and a liquid leakage detector configured to detect liquid leakage in the check valve based on a change in an output value of the primary pressure sensor during the waiting time. The liquid feeding control part is configured to control the operation of the primary plunger pump so that a waiting time, where the primary plunger pump stops without operating, is present while a discharge operation by the secondary plunger pump is performed after a suction by the primary plunger pump is completed. 1. A liquid feeding device comprising:a primary plunger pump;a secondary plunger pump connected to downstream of the primary plunger pump in series;a check valve provided between an outlet of the primary plunger pump and an inlet of the secondary plunger pump;a primary pressure sensor that communicates with a pump chamber of the primary plunger pump and that detects a pressure in the pump chamber of the primary plunger pump;a liquid feeding control part configured to control operations of the primary plunger pump and the secondary plunger pump, the liquid feeding control part being configured to control the operation of the primary plunger pump so that a waiting time, where the primary plunger pump stops without operating, is present while a discharge operation by the secondary plunger pump is performed after a suction by the primary plunger pump is completed; anda liquid leakage detector configured to detect liquid leakage in the check valve based on a change in an output value of the primary pressure sensor during the waiting time.24-. (canceled)5. The liquid feeding ...

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Номер записи: 81
10-05-2018 дата публикации

Fuel Supply Device and Fuel Supply Method

Номер: US20180128225A1
Автор: Makoto Kounosu, Renzo KANDA, Seiichi Kitamura
Принадлежит: Mitsui Engineering and Shipbuilding Co Ltd

A fuel supply device includes: a linear actuator; a reciprocating pump having a boosting piston driven by the linear actuator and configured to reciprocate in an axial direction, the reciprocating pump being configured to suck the fuel when the boosting piston moves in a first direction and configured to boost and eject the fuel when the boosting piston moves in a second direction; and a controller configured to control driving of the linear actuator so as to adjust an amount of the fuel ejected from a boosting cylinder per reciprocating time by adjusting a ratio of a fuel ejection time and a fuel suction time of the reciprocating pump without changing the reciprocating time of the boosting piston in accordance with a load of the internal combustion engine. The adjustment adjusts a stroke length of the boosting piston and a moving speed of the boosting piston in the second direction.

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Номер записи: 82
02-05-2019 дата публикации

DISPENSING SYSTEM

Номер: US20190126214A1
Автор: Obrien Michael Gerard
Принадлежит:

The present invention provides a dispensing system comprising a self-gassing liquid to be dispensed and a dispenser for dispensing the self-gassing liquid, the dispenser including: a valve housing having an inlet for receiving the liquid and an outlet through which the liquid is to be dispensed; a valve chamber and/or passage extending between the inlet and the outlet, and a valve arranged to open and close the valve chamber and/or passage; pressure maintaining means arranged to maintain the pressure of liquid at the inlet to the valve housing at a constant pressure during successive dispensing operations; and control means for controlling the opening and closing of the valve, the control means being arranged to open and close the valve to commence and terminate each successive dispensing operation, wherein the period for which the valve is open determines the quantity of liquid dispensed. The dispensing system may permit very small quantities of liquid to be dispensed with great accuracy and avoid the liquid being subjected to high shear forces. The system is particularly beneficial for the dispensing of peracetic acid. 1. A dispensing system comprising a self-gassing liquid to be dispensed and a dispenser for dispensing said self-gassing liquid , the dispenser comprising:a valve housing comprising an inlet for receiving the self-gassing liquid, an outlet through which the self-gassing liquid is to be dispensed, a valve chamber and/or passage extending between the inlet and the outlet, and a valve arranged to open and close the valve chamber and/or passage;pressure maintaining means arranged to maintain the self-gassing liquid at the inlet of the valve housing at a constant pressure during successive dispensing operations; andcontrol means for controlling the opening and closing of the valve, the control means being arranged to open and close the valve to commence and terminate each successive dispensing operation, wherein the control means is arranged to open the ...

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Номер записи: 83
11-05-2017 дата публикации

POSITIVE-DISPLACEMENT PISTON PUMP AND ASSOCIATED DELIVERY CONTROL METHOD

Номер: US20170130707A1
Автор: Annet Pierre, Pierre Christophe, TOURNEBIZE AURELIEN
Принадлежит:

A volumetric pump comprising a product metering chamber , a metering piston mounted inside said chamber so as to slide between top dead center and bottom dead center, a sleeve at least partially delimiting an intake chamber and an exhaust chamber for said product, and a product dispensing means that is mounted so as to be able to move with respect to the sleeve and is able to place the metering chamber alternately into communication with the intake chamber and the exhaust chamber is provided. The pump also comprises a measuring means that is able to measure the pressure of the product inside the metering chamber , and a control unit that is connected to the measuring means and is able to verify the presence of pressure peaks exhibiting a value greater than or equal to a predetermined pressure threshold. 1. A method for controlling the flow rate of a volumetric pump comprising a product metering chamber , a metering piston mounted inside said chamber so as to slide between top dead centre and bottom dead centre , and an intake chamber and an exhaust chamber for said product that are placed alternately in communication with said metering chamber , comprising the steps in which:the pressure of the product inside the metering chamber is measured during at least one pump cycle, andthe presence of a pressure peak having a value greater than or equal to a predetermined pressure threshold is verified during a compression phase of said pump cycle, the metering chamber being closed during said compression phase so as not to be in communication with the intake and exhaust chambers, and the metering piston moving towards top dead centre during said compression phase.2. A method according to claim 1 , wherein the pressure of the product inside the metering chamber is measured during a plurality of successive pump cycles claim 1 , and the presence of pressure peaks is verified during the compression phase of each of said cycles.3. A method according to claim 2 , wherein a warning ...

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Номер записи: 84
19-05-2016 дата публикации

System and Method for Generating a Drive Signal

Номер: US20160137477A1
Автор: James J. Dattolo, Russell H. Beavis
Принадлежит: Deka Products LP

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 regulating, at least in part, a flow rate of a pump assembly. At least a portion of the “on” portions of the PWM drive signal are pulse width modulated to define a second duty cycle for the at least a portion of the “on” portions of the PWM drive signal. The second duty cycle regulates, at least in part, the percentage of the defined voltage potential applied to the pump assembly.

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Номер записи: 85
03-06-2021 дата публикации

FLUID SUPPLY SYSTEM

Номер: US20210164399A1
Автор: MASUDA Seiei
Принадлежит: IHI CORPORATION

A fluid supply system includes: a centrifugal pump; a starting pump that is connected to the centrifugal pump in series, is provided downstream of the centrifugal pump, and has a discharge flow rate less than that of the centrifugal pump; a measuring valve that is provided downstream of the centrifugal pump and the starting pump, measures an amount of fluid discharged from the centrifugal pump or the starting pump, and discharges the fluid to a downstream each time the fluid reaches a predetermined flow amount; a differential pressure valve that is provided downstream of the centrifugal pump and the starting pump, and is driven based on a differential pressure between an upstream pressure and a downstream pressure of the measuring valve; and a flow rate control valve that is provided downstream of the centrifugal pump and upstream of the differential pressure valve and has a valve opening speed that is set slower than that of the differential pressure valve. 1. A fluid supply system comprising:a centrifugal pump;a starting pump that is connected to the centrifugal pump in series, is provided downstream of the centrifugal pump, and has a discharge flow rate less than that of the centrifugal pump;a measuring valve that is provided downstream of the centrifugal pump and the starting pump, measures an amount of fluid discharged from the centrifugal pump or the starting pump, and discharges the fluid to a downstream each time the fluid reaches a predetermined flow amount;a differential pressure valve that is provided downstream of the centrifugal pump and the starting pump, and is driven based on a differential pressure between an upstream pressure and a downstream pressure of the measuring valve; anda flow rate control valve that is provided downstream of the centrifugal pump and upstream of the differential pressure valve and has a valve opening speed that is set slower than that of the differential pressure valve.2. The fluid supply system according to claim 1 , ...

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Номер записи: 86
03-06-2021 дата публикации

PUMP DRIVE THAT MINIMIZES A PULSE WIDTH BASED ON VOLTAGE DATA TO IMPROVE INTAKE AND DISCHARGE STROKES

Номер: US20210164458A1
Автор: Carman Jason, Fairfield Nile
Принадлежит:

The performance of a solenoid drive liquid pump can be very dependent on the magnitude and stability of an input voltage, with non-ideal input power resulting in loss of efficiency and potential damage to the pump. Pulse width of drive signals provided to the pump, which cause solenoids to alternately energize to move liquid through the pump, may be adjusted in duration in order to compensate for non-ideal input voltage. A drive control module of the pump gathers voltage information, determines an improved pulse width based upon that voltage information, and then provides drive signals based upon the improved pulse width. Operating in this manner, a pump can operate at or near peak efficiency despite both significant variances in input voltage and non-sinusoidal input voltage, and without customized components or adapters. 1. A pump comprising:a liquid chamber comprising an intake valve and an output valve;a set of solenoids that may be energized by a drive, in response to drive signals; a shaft configured to perform an intake stroke or a discharge stroke by operation of the set of solenoids, wherein the intake stroke increases a volume of the liquid chamber and allows liquid to flow through the intake valve and the discharge stroke decreases the volume of the liquid chamber and forces liquid through the output valve; anda drive control module comprising a processor and memory and a voltage measuring circuit, wherein the drive control module is operable to provide drive signals to the set of solenoids; receive a set of voltage data via the voltage measuring circuit;', 'based on (1) the set of voltage data, (2) a corrected pulse width equation, and (3) an input voltage from the set of voltage data, a set of performance data, or a combination thereof, determine a corrected pulse width that is of a minimum duration that allows for completion of the intake stroke and the discharge stroke; and', 'generate a drive signal based upon the corrected pulse width and provide it ...

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Номер записи: 87
18-05-2017 дата публикации

Sealing moving with piston in a high-pressure pump

Номер: US20170138913A1
Автор: Blasius Nocon, Joachim-Richard Wagner, Karsten Lehradt
Принадлежит: AGILENT TECHNOLOGIES INC

A piston member for a high-pressure pump for pumping fluid in a sample separation apparatus, wherein the piston member comprises a piston configured for being mountable to reciprocate in a piston chamber for displacing fluid, and a sealing for sealing between the piston member and the piston chamber when the piston member is mounted in the piston chamber to reciprocate, wherein the sealing is mounted on the piston so as to reciprocate together with the piston.

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Номер записи: 88
26-05-2016 дата публикации

Metering Pump

Номер: US20160146198A1
Автор: Nornes Loyd Arve
Принадлежит:

A metering pump includes at least a first piston and a second piston which are displaceable in a first cylinder bore and in a second cylinder bore, respectively, the at least two pistons having a common driving device, and the second piston being displaceably connected to and displaced with the first piston for a portion of the stroke length of the first piston. 1. A metering pump comprising at least a first piston and a second piston which are displaceable in a first cylinder bore and in a second cylinder bore , respectively , the at least two pistons having a common driving device , wherein the second piston is displaceably connected to and is displaced with the first piston for a portion of the stroke length of the first piston.2. The metering pump in accordance with claim 1 , wherein the second piston is moved in a discharge direction by a first spring which is connected to the first piston.3. The metering pump in accordance with claim 1 , wherein the second piston is displaced in an intake direction by a second spring.4. The metering pump in accordance with claim 2 , wherein the first spring is dimensioned to exert a greater force than the second spring.5. The metering pump in accordance with claim 2 , wherein the free length of the first spring restricts the stroke length of the second piston.6. The metering pump in accordance with claim 1 , wherein the stroke length of the second piston is restricted by a stop on the first piston.7. The metering pump in accordance with claim 1 , wherein the stroke length of the first piston is adjustable.8. The metering pump in accordance with claim 1 , wherein the stroke length of the second piston is adjustable.9. The metering pump in accordance with claim 1 , wherein the first piston and the second piston have a common longitudinal axis. This invention relates to a metering pump. More particularly, it relates to a metering pump including at least a first piston and a second piston which are displaceable in a first cylinder ...

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Номер записи: 89
26-05-2016 дата публикации

MULTI-POINT SEAL LUBRICATION SYSTEM

Номер: US20160146201A1
Автор: Van Keulen Dennis J.
Принадлежит:

A spray system includes a fluid source, a sprayer, a pump cylinder, a plunger, a pump motor, first and second inlet and outlet valves, a plurality of valve seals, a seal lubricant reservoir, and gravity fed seal lubricant lines. The pump cylinder is disposed fluidly between the fluid source and the sprayer. The plunger is situated within the pump cylinder and positioned by a displacement rod. The pump motor is configured to drive the displacement rod so as to reciprocate the plunger within the pump cylinder. The valve seals are disposed about the each of the first and second inlet and outlet valves. The lubricant seal lines carry seal lubricant from the reservoir to each of the valve seals. 1. A spray system comprisesa fluid source;a fluid destination;a pump cylinder disposed fluidly between the fluid source and the fluid destination;a plunger situated within the pump cylinder and positioned by a displacement rod;a pump motor configured to drive the displacement rod to reciprocate the plunger within the pump cylinder;first and second inlet valves situated along fluid lines from the fluid source to the pump cylinder;first and second outlet valves situated along fluid lines from the cylinder to the sprayer;valve seals disposed about the each of the first and second inlet and outlet valves;a seal lubricant reservoir for lubricant fluid; andgravity-fed valve seal lubricant lines disposed to carry the lubricant fluid to each of the valve seals.2. The spray system of claim 1 , further comprising:a first cylinder bearing situated at a first axial extent of the pump cylinder, adjacent to the motor, to carry the displacement rod;a second cylinder bearing situated at a second axial extent of the pump cylinder, opposite the motor, to carry the displacement rod;first and second bearing seals respectively disposed about the first and second cylinder bearings; andfirst and second gravity-fed bearing seal lubricant lines disposed to carry the lubricant fluid to the first and ...

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Номер записи: 90
10-06-2021 дата публикации

Peristaltic pump

Номер: US20210172431A1
Автор: Jordan Vin Raviv, Nelson E. Dervaes
Принадлежит: Hach Co

An embodiment provides a self-lubricating linear peristaltic pump for delivering precise volumes of fluid, including: a housing comprising a slide area; at least one pinch block located within the slide area of the housing, wherein the at least one pinch block comprises a base end and a face end; a plurality of compression blocks located within the slide area of the housing, wherein each of the plurality of compression blocks comprises a base end and a face end; a cam located within the housing, wherein the mechanically contacts the base end of each of the at least one pinch block and the base end of each of the plurality of compression blocks; a motor mechanically coupled to the cam, wherein the motor moves the cam upon operation of the motor; and at least one tube in contact with the face end of each of the at least one pinch block and the face end of each of the plurality of compression blocks. Other aspects are described and claimed.

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Номер записи: 91
25-05-2017 дата публикации

Pump and injector for liquid chromatography

Номер: US20170145994A1
Автор: Brisbin Martin Paul, Plistil Ales, Stearns Stanley D.
Принадлежит: VALCO INSTRUMENTS COMPANY, L.P.

A combined pump-injector valve system utilizing a monolithic body to provide the barrel of the pump and as the stator of the valve, thus eliminating any need for connections between a pump and a valve, and therefore the potential for high-pressure leaks or pressure reductions. The combined pump-injector valve permits injection of nanoliter-sized samples into a chromatographic column, which is sealed during loading of the sample and filling of the pump, such that complete analyses can be completed with microliters of mobile phase with nanoliters of a sample. The pump-injector valve system further includes a pressure sensor external the barrel of the pump and may include an interim position intermediate loading and injection where the contents of the barrel may be pressurized to a desired pressure. 1. An integral nano-scale pump and injection valve for high performance liquid chromatography comprising: said elongate barrel having a first open end at a first end of said integrated barrel-stator and a second open end at a second end of said integrated barrel-stator and a sidewall defining an interior chamber adapted to receive a supply of fluid,', 'said stator being circular, said stator having a first side, said elongate barrel second end terminating at a centerpoint of said stator at said stator first side and providing an orifice, said stator first side being coplanar with said second end of said integrated barrel-stator, said stator having a first stator port for communication with a mobile phase supply, said stator in communication with a rotor at said orifice, said stator at said second end of said integrated barrel-stator,', 'said integrated barrel-stator having a first side on said elongate barrel, the first side of said integrated barrel-stator having a thickness, said thickness sufficient to withstand an internal pressure of said elongate barrel, said thickness sufficient to deform proportionally to a change in said internal pressure;, 'an integrated barrel- ...

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Номер записи: 92
07-05-2020 дата публикации

AUTOMATED CONTROL MECHANISMS IN A HEMODIALYSIS APPARATUS

Номер: US20200139031A1
Автор: Dale James D., Demers Jason A., Flynn Catherine N., Grant Kevin L., Tracey Brian D., van der Merwe Dirk A., Wilt Michael J.
Принадлежит: DEKA Products Limited Partnership

Systems for monitoring fluid flow in an extracorporeal blood circuit are described. The blood circuit of such systems can include plod pump having a pumping chamber of the blood pump separated from a control chamber of the blood pump by a flexible diaphragm. The control chamber can be configured to transmit positive or negative pressure to operate the diaphragm. The system can include a pressure sensor configured to measure pressure in the control chamber of the blood pump, and a controller configured to receive information from the pressure sensor and to control the delivery of pressure to the control chamber of the blood pump. The controller can also be configured to cause the application of a time-varying pressure waveform on the blood pump diaphragm during a fill-stroke of the blood pump, and to monitor a pressure variation in the control chamber measured by the pressure sensor. When so configured, such controller can transmit a value representing a magnitude of the measured pressure variation to a display associated with the extracorporeal blood circuit. 135.-. (canceled)36. A system for monitoring fluid flow in an extracorporeal blood circuit comprising:a pumping chamber of the blood pump separated from a control chamber of the blood pump by a flexible diaphragm, the control chamber configured to transmit positive or negative pressure to operate the diaphragm;a pressure sensor configured to measure pressure in the control chamber of the blood pump;a controller configured to receive information from the pressure sensor, and configured to control the delivery of pressure to the control chamber of the blood pump;wherein the controller is configured to cause the application of a time-varying pressure waveform on the blood pump diaphragm during a fill-stroke of the blood pump, and to monitor a pressure variation in the control chamber measured by the pressure sensor, and wherein the controller transmits a value representing a magnitude of the measured pressure ...

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Номер записи: 93
31-05-2018 дата публикации

Pump Device, Brake System

Номер: US20180149151A1
Автор: Alice Schacherl, Anton Paweletz, Ben Ferguson, Bernd Lutz, Dietmar Kratzer, Franz Mayer, Gerhard Stransky, Guenter Escher, Hermann Bamberger, Michael Specker, Roland Heller, Stefan Achilles
Принадлежит: ROBERT BOSCH GMBH

A pump device, in particular for a brake system of a motor vehicle, includes two hydraulic chambers, a linear drive, and a pump piston. Each of the chambers has at least two fluid connections. The pump piston interacts with the chambers. The linear drive is embodied as a reluctance drive and includes a longitudinally movable armature, a housing-fastened stator that is configured to receive current, and at least one spring element. The at least one spring element is associated with the armature, and is configured to counteract a drive force of the reluctance drive. The armature is connected to the pump piston.

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Номер записи: 94
11-06-2015 дата публикации

Metering System and Metering Pump Therefor

Номер: US20150159639A1
Автор: Kaibel Jens, Schall Joachim
Принадлежит: ProMinent GmbH

The present invention relates to a metering system for metering a liquid metering medium, with a suction line, which is filled with a metering medium at the liquid pressure p, and a pressure line, which is filled with the metering medium at the liquid pressure wherein the suction line is connected to the pressure line by a metering member configured as a metering pump, with which metering medium can be conveyed from the suction line into the pressure line, wherein the metering pump has a conveying chamber, the volume of which can be changed with the aid of a movable displacement element in such a way that, in a first position of the displacement element, the conveying chamber has a minimum volume Vand, in a second position of the displacement element, the conveying chamber has a maximum volume V, the conveying chamber being connected by a pressure valve to the pressure line and by a suction valve to the suction line, so, by an oscillating movement of the displacement element, metering medium can alternately be sucked out of the suction line via the suction valve into the conveying chamber and metering medium can be discharged from the conveying chamber via the pressure valve into the pressure line. In order to provide a metering system and a metering pump adapted for this, which has a high degree of efficiency, exhibits no leakage flow and is simply constructed, it is proposed according to the invention that 3. Metering system according to claim 1 , characterised in that the liquid pressure p>7 bar.5. Metering pump according to claim 3 , characterised in that provided between the first position and the second position of the displacement element is a third position of the displacement element claim 3 , in which the conveying chamber has a working volume V claim 3 , wherein V Подробнее

Номер записи: 95
01-06-2017 дата публикации

MULTI-PORT METERING PUMP ASSEMBLY AND RELATED METHODS

Номер: US20170152844A1
Автор: Hutchinson Ervin Andy, Kingsford Kenji Allen, Parsons Courtney, Simmons Tom M.
Принадлежит:

A multi-port metering pump assembly includes a manifold coupled to a metering pump. The manifold defines a central passage in fluid communication with a plurality of intermediate passages defined in the manifold. The manifold includes a plurality of outer passages. Each intermediate passage provides fluid communication between the central passage and a corresponding outer passage. A plurality of valves is coupled to the manifold. Each valve of the plurality of valves is located between an intermediate passage and a corresponding outer passage, and is configured to enable or prevent passage of fluid between a corresponding intermediate passage of the plurality of intermediate passages and a corresponding outer passage. The multi-port metering pump assembly also includes an electronic controller coupled to the plurality of valves, the electronic controller having an associated electronic interface and being programmable to selectively and independently open and close the valves of the plurality of valves. 1. A multi-port metering pump assembly , comprising:a metering pump; a first surface on a first side of the manifold;', 'a second surface on a second side of the manifold;', 'an elongated linear central passage extending through the manifold;', 'intermediate passages extending linearly through the manifold from the first surface to the elongated linear central passage; and', 'outer passages extending linearly from the first surface to the second surface, each outer passage respectively corresponding to one of the intermediate passages; and, 'a manifold coupled to the metering pump, the manifold having a longitudinal axis and comprisinga plurality of valves coupled to the manifold, each valve of the plurality of valves being located at the first surface of the manifold and between an intermediate passage and a corresponding outer passage, each valve configured to enable and prevent passage of fluid pressurized by the metering pump between corresponding intermediate ...

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Номер записи: 96
22-09-2022 дата публикации

SYSTEM FOR DISPENSING ABRASIVE MATERIAL

Номер: US20220299017A1
Автор: Scopelite John R., Sinders Steven R.
Принадлежит:

A system for dispensing abrasive materials includes a transfer pump configured to pump abrasive material to a metering pump configured to pump the abrasive material to an application. Dynamic interfaces within the pumps are at least partially formed by sleeved components of the pump interfacing with a seal configured to engage with the sleeved surface during relative movement between the sleeved surface and the seal. The smooth exterior surfaces of the sleeves interface with the seals to prevent abrasive particulate in the material from adhering to the sleeve, preventing the abrasive particulate from being pulled between the sleeve and the seal. 1. A pump for pumping an abrasive material , the pump comprising:a pump body;a first seal supported by the pump body;a piston at least partially disposed within the pump body and configured to reciprocate along a pump axis;a first piston sleeve mounted on the piston, wherein the first piston sleeve interfaces with the first seal during reciprocation of the piston;a second piston sleeve mounted on the piston and spaced axially from the first piston sleeve along the piston; andan intake valve disposed within the pump body, wherein the intake valve includes an intake seal assembly disposed on the piston, wherein the intake seal assembly interfaces with the second piston sleeve during reciprocation of the piston, and wherein the intake valve is actuatable between an open state with the intake seal assembly disengaged from an intake seat and a closed state with the intake seal assembly engaged with the intake seat.2. The pump of claim 1 , wherein the intake seal assembly rides on the second piston sleeve.3. The pump of claim 2 , wherein the intake seal assembly comprises:an intake seal housing; andan intake seal disposed within the intake seal housing, the intake seal engaging the second piston sleeve.4. The pump of claim 3 , wherein the intake seal comprises:a first intake dynamic seal having a first seal body and a first seal ...

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Номер записи: 97
22-09-2022 дата публикации

Diaphragm pump for conveying a fluid

Номер: US20220299018A1
Автор: Dieter Binz, Martin Reinhard
Принадлежит: ProMinent GmbH

The present invention relates to a diaphragm pump for conveying a fluid, a method for starting up a diaphragm pump for conveying a fluid and the use of a diaphragm pump for conveying a fluid.

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Номер записи: 98
23-05-2019 дата публикации

WASHING AGENT PUMP AND LAUNDRY TREATING APPARATUS HAVING THE SAME

Номер: US20190153655A1
Автор: JANG Hunjun, JUNG Sungwoon
Принадлежит:

Provided is a washing agent pump and a laundry treating apparatus having the same. The laundry treating apparatus may include a cabinet, a tub provided within the cabinet, a rotary tub provided within the tub in a rotatable manner, and a washing agent supply unit. The washing agent supply unit may include a storage container to store a liquid washing agent including a liquid detergent or a liquid softener, the storage container being slidably provided in the cabinet, a washing agent supply passage having one side connected to the storage container and another side connected to the tub, and a washing agent delivery device provided in the washing agent supply passage to deliver the liquid washing agent to the tub. 1. A washing agent pump , comprising:a passage body having a passage for a liquid washing agent including a liquid detergent or a liquid softener and a pressurized space, and provided with an intake valve that opens and closes an inlet port of the pressurized space and a discharge valve that opens and closes an outlet port of the pressurized space;a cylinder disposed at one side of the passage body to communicate with the pressurized space;a piston disposed within the cylinder in a reciprocating manner;a piston operating unit that operates the piston to reciprocate; anda residual quantity detecting unit provided with an air pocket cavity in communication with the passage of the passage body and to temporarily accommodate air and the liquid washing agent, and electrodes disposed within the air pocket cavity to contact the liquid washing agent, the residual quantity detecting unit detecting a low level of the liquid washing agent.2. The washing agent pump of claim 1 , wherein the residual quantity detecting unit is disposed at a downstream side of the pressurized space along a flow direction of the liquid washing agent.3. The washing agent pump of claim 2 , wherein the passage body includes an introduction portion through which the liquid washing agent is ...

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Номер записи: 99
23-05-2019 дата публикации

Metering Pump and Metering System

Номер: US20190154017A1
Автор: WICHMANN Wolf-Dieter
Принадлежит:

The invention relates to a metering pump having a hydraulic drive () for supplying a hydraulic fluid under pressure. The metering pump furthermore comprises a housing () and an oscillating piston (), which is accommodated in the housing () in such a way that at least a first and a second hydraulic chamber (--) and a first (-) and a second delivery chamber (-) are formed, wherein the oscillating piston () has at least a first driving surface (-) in the first hydraulic chamber (-) and at least a second driving surface (-) in the second hydraulic chamber (-), and the hydraulic chambers (--) communicate with the hydraulic drive, thus enabling the oscillating piston () to be moved backward and forward between a first and a second position by the hydraulic fluid, wherein, during the movement from the first to the second position, the volume of the first delivery chamber (-) is enlarged and the volume of the second delivery chamber (-) is reduced and, during the movement from the second to the first position, the volume of the second delivery chamber (-) is enlarged and the volume of the first delivery chamber (-) is reduced. The invention furthermore relates to a metering system for mixing two fluids and a metering system for metering at least one fluid. 1{'b': '12', 'a hydraulic drive () for supplying a hydraulic fluid under pressure,'}{'b': '2', 'a housing (),'}{'b': 3', '2', '9', '1', '9', '2', '6', '1', '6', '2, 'an oscillating piston (), which is accommodated in the housing () in such a way that at least a first and a second hydraulic chamber (-, -) and a first (-) and a second delivery chamber (-) are formed, and'}{'b': 3', '3', '6', '1', '6', '2, 'an adjusting device, which is coupled to the oscillating piston () in such a way that the movement of the oscillating piston () can be limited in such a way that different minimum and/or maximum volumes can be set for at least one of the delivery chambers (-, -),'}{'b': 3', '10', '1', '9', '1', '10', '2', '9', '2', '9', ' ...

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Номер записи: 100